CA1316959C - Hose assembly and method of making the same - Google Patents
Hose assembly and method of making the sameInfo
- Publication number
- CA1316959C CA1316959C CA000577692A CA577692A CA1316959C CA 1316959 C CA1316959 C CA 1316959C CA 000577692 A CA000577692 A CA 000577692A CA 577692 A CA577692 A CA 577692A CA 1316959 C CA1316959 C CA 1316959C
- Authority
- CA
- Canada
- Prior art keywords
- hose
- venturi section
- inner hose
- fluid passage
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
- B67D7/0488—Means for preventing the formation of condensation on, or for removing condensation from, vapour recovery lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/20—Double-walled hoses, i.e. two concentric hoses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A hose assembly and method of making the same are provided, the hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container, and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hose to provide the first fluid passage therewith, the ends of the inner hose being respectively telescopically disposed on the disposed ends of the Venturi section.
A hose assembly and method of making the same are provided, the hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container, and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hose to provide the first fluid passage therewith, the ends of the inner hose being respectively telescopically disposed on the disposed ends of the Venturi section.
Description
. ' 1316q5q This invention relates to a new hose assembly and to a new method of making such a hose assembly.
It is known to provide a hose assembly having a flrst fluid passage therein for conveying a volatile liquid in one direction to a container, and a second fluid passage therein for returning the vapours of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral swrface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid ~rom a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hose to provide the first fluid passage therewith. For example, see prior art FIGS. 14, 15 and 16 of this application, and in Canadian Patent No.
1,297,806.
: , Also see the U.S. paten-t to Furrow et al, No.
4,687,033, for another arrangement wherein one end of an inner hose is telescopically disposed within one end of a straight Venturi section.
It is one feature of this invention to provide a new hose assembly wherein the effective length of the straight portion of the inner hose thereof is relatively short in order to permit the hose assembly to provide a desired drape when the hose assembly is installed on a conventional curbside gasoline pump or the like for dispensing gaso}ine therefrom to a gasoline tank of a transportation vehicle or the like.
Accordingly, it is an ob~ect of this invention to provide a new hose assembly having fluid passages therein for respectively conveying a volatile liquid in one direction to a container and returning vapors of the volatile liquid from the ; container, the hose assembly of this invention having one or more of the novel features of this invention as set Eorth above or hereinafter shown or descrlbed.
In particular, it was found aacording to the teachings of this invention that the means Eor ; seauring the substantially straight Venturi section in the inner hose of the aforementioned hose 131~q5q assembly of Canadian Patent No. 1297806, cr~ates a rela-tively long effective straight sectlon in the inner hose of the hose assembly that not only prevents achievin~ a proper drape of the hose assembly when installed to a conventional curbsld~ gasollne pUlllp as wiIl be apparent herelnafter, but also such an arrangement creates an abrupt transitlon for the fluid at the inlet and outlet ends of the Ven-tur~ section, which transition is believed to reduce its efficiency.
Accordingly, it was found according to this invention that by eliminating -the coupling ~olnts of -the prior known Venturi arrangement, and by u-tilizin~ the Venturi body or section itself as the : :
coupling insert, not only is a smooth transition ~ provided between the inner hose and the Venturi section, but also a shorter effective length of the straight section ~of the inner hose results in a 20 : more proper drape of the hos~e assembly when : installsd~ to a convsntional curbside gasoline pump ox the like.
For example, one aspec-t of this invention . ~ provides a hose assembly havlng a first fluid :~ passage therein for conveyillg a volatile liquld in one direction to a con-tainer, and a second fluid ' ,i~: ~,.
.~, ~, ,, ~, . ..
, , ~
131695~
passage -therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner psripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of the second 1uid passage, the inner hose having ad~acent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the ~lnner hose to provide the first fluid passage therewith, the ends of the innex hose being respectively telescopically disposed on the:opposed ~: : ;: ~ ends of the Venturi section.
:~: 20 : Another obJect of this invention is to provide ;: a new~ method~of maklng suoh a hose assembly, the : method of this invention having one :or more of the : novel~:features of this invention as set forth above or hereinafter shown or described.
:: For example, another aspeot of this invention ~ provides a method of making a hose assembly having : ~ : :
; ~ :
It is known to provide a hose assembly having a flrst fluid passage therein for conveying a volatile liquid in one direction to a container, and a second fluid passage therein for returning the vapours of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral swrface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid ~rom a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the inner hose to provide the first fluid passage therewith. For example, see prior art FIGS. 14, 15 and 16 of this application, and in Canadian Patent No.
1,297,806.
: , Also see the U.S. paten-t to Furrow et al, No.
4,687,033, for another arrangement wherein one end of an inner hose is telescopically disposed within one end of a straight Venturi section.
It is one feature of this invention to provide a new hose assembly wherein the effective length of the straight portion of the inner hose thereof is relatively short in order to permit the hose assembly to provide a desired drape when the hose assembly is installed on a conventional curbside gasoline pump or the like for dispensing gaso}ine therefrom to a gasoline tank of a transportation vehicle or the like.
Accordingly, it is an ob~ect of this invention to provide a new hose assembly having fluid passages therein for respectively conveying a volatile liquid in one direction to a container and returning vapors of the volatile liquid from the ; container, the hose assembly of this invention having one or more of the novel features of this invention as set Eorth above or hereinafter shown or descrlbed.
In particular, it was found aacording to the teachings of this invention that the means Eor ; seauring the substantially straight Venturi section in the inner hose of the aforementioned hose 131~q5q assembly of Canadian Patent No. 1297806, cr~ates a rela-tively long effective straight sectlon in the inner hose of the hose assembly that not only prevents achievin~ a proper drape of the hose assembly when installed to a conventional curbsld~ gasollne pUlllp as wiIl be apparent herelnafter, but also such an arrangement creates an abrupt transitlon for the fluid at the inlet and outlet ends of the Ven-tur~ section, which transition is believed to reduce its efficiency.
Accordingly, it was found according to this invention that by eliminating -the coupling ~olnts of -the prior known Venturi arrangement, and by u-tilizin~ the Venturi body or section itself as the : :
coupling insert, not only is a smooth transition ~ provided between the inner hose and the Venturi section, but also a shorter effective length of the straight section ~of the inner hose results in a 20 : more proper drape of the hos~e assembly when : installsd~ to a convsntional curbside gasoline pump ox the like.
For example, one aspec-t of this invention . ~ provides a hose assembly havlng a first fluid :~ passage therein for conveyillg a volatile liquld in one direction to a con-tainer, and a second fluid ' ,i~: ~,.
.~, ~, ,, ~, . ..
, , ~
131695~
passage -therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner psripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of the second 1uid passage, the inner hose having ad~acent intermediate ends, the Venturi section having opposed ends respectively interconnected to the ends of the ~lnner hose to provide the first fluid passage therewith, the ends of the innex hose being respectively telescopically disposed on the:opposed ~: : ;: ~ ends of the Venturi section.
:~: 20 : Another obJect of this invention is to provide ;: a new~ method~of maklng suoh a hose assembly, the : method of this invention having one :or more of the : novel~:features of this invention as set forth above or hereinafter shown or described.
:: For example, another aspeot of this invention ~ provides a method of making a hose assembly having : ~ : :
; ~ :
' a first fluid passage therein for conveying a volatile liquid in one direction to a container, and a second fluid passage therein for returning tha vapors of the volatile liquid from the container, the assembly comprising a fle~ible inner hose having an outer peripheral surface and defining the first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around the inner hose, the inner peripheral surface of the outer hose and the outer peripheral surface of the inner hose defining the second fluid passage therebetween, the inner hose having a substantially straight Venturi æection therein that tends to remove liquid from a certain area of the second fluid passage, the inner hose having adjacent intermediate ends, the Venturi section having opposed ands respectively : interconnected to the ends of the inner hose to provide the first fluid passage therewith, the ends : 20 of the inner hose being respectively telescopically : disposed on the opposed end~ of the Venturi section. : :
he features of this invention, and its : ~ technical advantages, can be seen from the ~ following description of preferred embodiments, ~ together with the claims and the accompanylng , ~
:~ - 5 -, ''''''"'' ''' ' -~` 1 3 1 6959 drawings, in which:
FIG. 1 is a side view of the hose assembly of this invention being utilized for dispensing gasoline from a conventional curbside gasoline pump or the like to a nozzle means for insertion in the gasoline tank of a transportation vehicle or ths like.
FIG. 2 is an enlarged fragmentary perspactive view of one end of the hose assembly of this invention.
FIG. 3 is an exploded perspective view of the various parts of the end of the hose assembly of FIG. 2.
FIG. 4 is a perspective view 111ustrating the parts of FIG. 3 in their assembled rslation.
FIG. 5 is a fragmentary cross-sectional view taken on line 5-5 of FIG. 4.
;FIG.~ 6 is a fragmentary cross-sectional view illustrating certaln parts of the hose assembly of this invention.
:
FIG.~ 7 is a fragmentary perspective view illustrating the Venturi section of the inner hose ; o~ the hose~assembly of this invention.
FIG. a is: an enlarged fragmentary cross-sectional view taken on line 8-8 of FIG. 7.
FIG. 9 is a cross-seational view taken on line ~. ~
' ~
~:, :
: ,, . :
1 3 1 ~95q 9 9 of FIG. 8.
FIG. 10 is a reduced exploded view of the parts of the Venturi portlon of the hose assembly of this inven-tion before the same have been assembled together.
FIG. 11 is a view similar to FIG. 10 and illustrates how the parts of the assembly of FIG.
10 are secured together. ~;
FIGS. 12A and l2s~ when placed end-to-end, provide an enlarged fragmentary cross-sectional view which illustrates how the inner hose of the hose assembly of this invention has the Venturi section thereof arranged in the drape of the hose assembly at a gasoline pump or the ll)ce.
FIG. 13 iS a fragmentary view similar to FIG.
12A and illustrates the Venturl sectlon in another oparating posltion thereof ln the hose assembly.
FIG. 14 ls a view slmllar to FIG. l and illustrates the drape of the prior known hose assembly as set forth in Canadian Patent No. 12~7806.
F`IG. 15 is an enlargad fraginentary view, partlally in cross section, of the Venturi portlon of the inner hose of the prior known hose assembly of FIG. 14.
,;, ,/, .. ,,.. ~,., ............................... :
1316q5~
FIG. 16 is an enlarged fragmentary cross-sectional view of one end of the Venturi section and the inner hose of FIG. 15.
FIG. 17 is a cross-sectional view of another Venturi section of this invention.
FIG. 18 is a view similar to FIG. 17 and ~ illustrates another Venturi section of this ; invention.
FIG. 19 is a view similar to FIG. 17 and illustrates another Venturi section of this invention, FIG. 19 illustrating the Venturi section in one operating position thereof.
FIG. 20 is a view similar to FIG. 19 and illustrates the Venturi seation in another operating position thereof.
FIG. 21 ~s a view similar to FIG. 17 and illustrates another Venturi section of this nventionO
FIG~. 22 is a view similar to FIG. 17 and illustrates another Venturi section of thls invention.
FIG. 23 is a view similar to FIG. 17 and illustrates another Venturi section of this invention.
FIG. 24 is an enlarged fragmentary view of the Venturi section of FIG. 23 and illustrates the same .
,: ~ ; , ' 131~959 in one operating position thereof.
FIG. 25 is a view similar to FIG. 24 and illustrates the Venturi section in another operating condition thereof~
While the various features of this invention are hereinafter illustrated and described as being particularly adapted to provide a hose assembly for conveying volatile fluids, it is to be understood that the various features of this invention can be utilized singly or in various combinat~ons thereof to provide a hose assembly for other purposes as desired.
Therefore, this invention is not to be limited to only the embodiments illustrated in the drawings, because the drawings are merely utilized to illustrate one of the wide variety of uses of : : : : this invention.
::: : : : :
Referring now to FIG. 1, the new hose assembly : of this~invention is generally indioated by the : 20 reerence numeral 30 and is shown in FIG. 1 as : :having one end 31 thereof interconnecte:d to a aonventlonal gasoline pump 32 or the lika, and the :oth:er end~ 33 thereof interconnected to a : conventional dlspensing nozzle 34 which is shown in a normal position for dispensing uel into the gas tank or storage container of a transportation ::
g : :
.... .. . .
~ -,, .
1 31 6q59 vel~icle or tl1e l1ke ( not sl~own ); an inter111ediateportion 35 of tlle hose assembly 30 provides a low portion or drape thereof from wl~icl~ any collected liqui~l thereln is to be removed by tlle hose assembly 30 o tllis invention in a manner l~ereinafter set fort1l a11d for tl e reasons set forth in tl1e aEorementioned U. S . patent to Furrow et al No. 4 687 033 Ihe hose assembly 30 of tl1is invent1on is best lO illustrated ln FIG. 6 al1d camprises a flexible inner hose 36 that l~as an outer E~erip1~eral surface 37 and deflnes an inl1er fluid passage 3B therein through whlch tlle volatlle llquia from t11e pump neans 32 1.s adapted to be conveyed ln a dlrection -towar(l the nozzle constructio1~ 34 11l a conventlonal man1~er.: T}le hose assembly 30 also comprlses a f:lexible 3uter 11ose 39 tllat l1as an inner perlp}leral sorEace 40 ~ that cooperates wlth tlle outer per~ipheral surface 37 of the inl1er hose 36 to :20 ~ ~efine an outer flu1d passage 41 tl-erebetween and throug11 whlcl1 vapors of tllé dispensed volatlle liquid ~ can be returned rom t11e nozzle means 34 back to tlie pump 1neal1s 32 in a. mallllfar convenl~ional ; in -the ar~f sucl) as set fort1~ ln tl1e aforement1oned fi~
' ;' ' ' ' ,;~ ' , ' ' ' :, , ,', ':. ~
U.S. patent to Furrow et al l~o. 4 687 033 as well as in another U.S. patent to Furrow et al, No.
4 566 504 and tlle U.S. patent to Bas~lam No.
3, 9~0, 1120 While the inner llose 36 has substantially smootll inler alld outer peripl~eral surfaces tlle main body portior 42 of tle outer hose 39 is corrugated in a helic~l m~nner to deflne al-ternating crests 43 and valleys 44 on t?e lnner peril~l eral surEace 40 tllereof as well as corresponding and a1terl~ati-9 crests ~5 and valleys 46 on the ou~er peri~lleral surface 47 tlereof as illustrated in FIG. 6 eacl irner crest 43 and each inner valley 44 defiliing an arcuate surface for a purpose l~ereillafter described.
In additiol- the outer l~ose 39 has a relnforclng wire-lilce member 4~ secured ~o tl~e inner peripheral surface 40 thereof and also being disposed in~a helical mallner ailong tlle length of 20~ -tlle body portion 42 of tle outer l~ose 39 the wire reinforcing member 4n being Eonned of any suitable : Illaterial~ SilCh as metallic mater1al and tl~ereby rendering tl~e outer l~ose 39 substan~ially resistant to inward orush1ng tllereof about tl~e inner ~ose 36 , .:
.,~,".......................... ' :
.. . .
for a purpose hereinafter set forth. However, because the body portion 42 of the outer hose 39 is corrugated in the manner previously set forth, the outer hose 39 is relatively flexible.
While the body portion 42 of the ou-ter hose 39 can be formed of any suitable material, one working embodiment thereof is formed by -the method of providing a precurved metallic wire helix 49 (FIG.
12A) with an external urethane coa-ting 50 thereon.
Thereafter, an outer cover 51 of urethane is extruded over the coated reinforcing member 48, whereby -the coating 50 thereon enhances the adhesion of the outer urethane material 51 to the reinforcing wire 48 while the resulting structure has the wire 49 effectively embedded therein. Of course, the body portion 42 of the outer hose 39 ~: ~ could be formed of differant material and by a different method, if desired.
, In order to attach outer couplings 52 to the opposed ends of the body portion 42 of the outer hose~ 39, substantially smooth and nonreinforced :~ :
; ~ ~oyllndrical cuffs 53 of urethane are respectively bonded~ or moldèd to the opposed ends 54 of the outer hose 39 as illustrated in FIGS. 3 and 5, so that the cuffs 53 can be subsequently secured to the couplings 52 in any suitable manner, such as :::
~ 12 - ~
.
, ' ., '' , ~ 3 1 695~
the manner set forth in the aforementioned U.S.
patent to Basham, No. 3,980,112.
However, before the cuffs 53 are molded on the ends 54 of the outer hose 39, an end por-tion 55 of the reinforcing wire 48 at each end 54 of the outer hose 39 has not only the coating 50 thereon removed but also the outer cover 51, so that the end portion 55 of the wire 48 will tend to extend outwardly beyond the outer peripheral surface 56 of the subsequently molded cuff 53 in the manner illustrated in FIG. 3 so as to provide an electrical conneotion between the opposed end couplings 52 of the hose assembly 30 for antistatic purposes.
In particular, each coupling 52 comprises an outer metal tubular coupling member 57 that is adapted to be telescoped ovar the respective cuff 53 and to have a plurality of inwardly directed ribs 58 thereof embedded into the respective cuff 53 when an internally disposed metallic sleeve 59 is outwardly expanded within the:coupling member 57 in the manner illustrated in FIG. 5:to hold the cuff~ 53 to the ooupling 52. The bared end 55 of the wire: 48 is maintained in electrical contact with the internal peripheral surface 60 of the , ~ metallic coupling member 57 in the manner :: :
~ 13 -131695q illustratad in FIG~ 5. In this manner, the wire 48 electrically interconnects the two end couplings 52 for tha hose assembly 30.
Each coupling 52 includes a tubular member 61 that is rotatably disposed thereon between an annular shoulder 62 of the tubular member 57 and a split ring retainer 63 as illustrated in FIG. 5.
:The member 61 can have external threads 64 thereof threaded to internaI threads (not shown) so as to couple the coupling 52 to either the nozzle construction 34 or the coupling structure 65 of the pump 32 in a manner conventional ln the art.
The tubular member 57 of the coupling 52 defines aD internal annular shoulder 66 against ; : which~ a ~clip m~ans 67, FIG. 2, abuts~ so: as to substsntia11y concentricslly mount an~ end f~itting 68 of the~ inner hose 36 within the respective coupling 52 in substantially the same~manner as set forth in the aforementioned U.S. patent to Basham, No. 3,9B0,112. In this msnnsr, esch end of the inner hoss~36 i~s supported by the snd clip means 67 in the: couplings ~52 at:the oppoqed ends of the :: :: : :
outar hoee 39,~whereby the lnner hosa 36 is aarried : : in the outer hose 39 to complete the hose assembly 30.
; Sinae the coupling 52 and cIip means 67 for ~ .
:, , , .
: : , , .
.
, .
1 3 1 6q5q the hose assembly 30 of this invention are fully disclosed and claimed ln Canadian Patant No. 1297806, a fur-ther discussion thereof is deemed unnecessary o-ther -than to state that when the hose assembly ~0 is coupled to the nozzle construction ~ and to the gasoline pump 32 in the manner illustrated in FIG. 1, the fluid passage 38 in the inner hose 36 is adapted to direct volatile fuel from -the pump means 32 to the nozzle 34 to be dispensed therefrom in a conventional manner, while the second fluid passage 41 defined between the outer hose 39 and the inner hose~ 36 is adapted to be utilized to return vapors~
from the dispensing operation at the nozzle construction 34 back to the pump means ~32 for a vapor recovery purpose tha-t is well known in the art.
It is also known, as fully described in the aforementioned U.S. patent to Furrow et al, No.
4,687,033, that liquid in the outer passage 41 of the hose assembly 30 tends to collect at the low point or drape area 35 of the hose assembly 30 as illustrated ~in FIG. 1, and it ls known from others to include a Venturi section in the lnlier hose 36 so that the same can have its inlet means disposed . ,. . : . : .
1316~59 in the passage means 41 at the drape area 35 for sucking the collected liquid from that drape area 35 and direc-ting the same back into the inner fluid passage 38 of the inner hose 36 so as to be directed back to the nozzle 34 as the liquid face flows through the inner passage 38 from the pump means 32 and passes through the Venturl section to the nozzle construc-tion 34.
As previously stated, l-t was found, according to the teachings of this invention, that such an internal Venturi sec-tion as se-t forth in the Canadian Patent No. l297806, resulted in the effective length of the s-traight portion of the inner hose of the ilose assembly~ to be relat~vely long,: so that the drape area thereof cannot:be bent by a user of the hose assembly 3Q io properly dlspensing fuel from the pump means 32 to ~that user's gasoline tank.
: 20 : ~ For example, reference is now made to ~IG. 14, ~: whereln the prior known hose assembly ~s generally : : ~indlcated by the reference numeral 30A, and the drape~or low area~35A thereof ls shown has havlng a relatively long straight section therein that is provided by the effective straight length: of the Venturi section in the inner hose thereof.
: - 16 -,~;~., ; :
,, " ';
~ ~ .
': : ' , ~ :
.
.~ :
1~1695q In particular, such prior known hose assembly 30A has the inner hose 36A thereof, as illustrated in FIGS. 15 and 16, provided with a straight Venturi section 70 that is formed of metallic material and has a flow passage 71 passing therethrough and through the opposed ends 72 and 73 thereof. The flow passage 71 has a raduced throat area 74 which communicates with a plurality of port means 75 that extend subs-tantially radially outwardly to communicate with the outer flow passage in the hose assembly (not shown) to draw any liquid contained therein into the throat portion 74 and, thus, into the flow passage 71 for the reasons previously set forth. Each port:means 75 has a one-way check valve means 76 disposed therein so as to prevent liquid from flowing from :
the Venturi section 70 outwardly through the port means 75.
:~ :The opposed ends 72 and 73 of the Venturi ~ 20 section 70 are respectively interconnected to ::
:adjacent and portions 77 and 78 of the inner hose :36A by like coupling members:79.~ As lllustrated in FIG. 16, eaah coupling member 79 has an externally thr0aded and 80 that threads~ lnto the adjacent internally threaded end 73 of the Venturi section : 73 and is~sealed thereto by suitable sealing means :, :
"' , . .
1 3 1 695~
81. The respective coupling member 79 is in turn interconnected to its adjacent end 78 of the inner hose 36A by having that end 78 teleslcoped within a tubular portion 82 of the coupling member 79 and being outwardly radially compressed by an expanded metallic sleeve 84 into annular grooves 83 formed internally in the tubular portion 82.
However, it was found that such a coupling arrangement for the Venturi section 70 created a straight length in the inner hose 36A that was approximately 14.186 cm (5.585 inches), which resulted in the substantlally straight unbendable section 35A in the hose sssembly 30A as illustrated in FIG. 14.
Accordlngly, it was found according to the te~achlngs of this lnYention that the adjacent ends of the inner hose could be telescoped onto adjacent ends of the Venturi section so as to reduce the overall effPctive straight length of the Venturi portion of the inner hose as well as to provide a smooth transition between the inner hose and the Vanturi section.
For example, reference is now made to FIGS. 7 and 8 wherein the new Venturi section of this lnvention~is generally indlcated by the reference numeral 90 and comprises a substantially ': ~ ' ': ;, .~ , .
' ;, cylindrical block of m0tallic material having opposed ends 91 and 92 through which a ~low passage 93 extends, with the flow passage 93 being uni~uely arranged in a manner hereinafter set forth.
Each end 91 and 92 of the Venturi section 90 has an end cylindrical portion 94, with the end cylindrical portion 94 at the end 92 being longer than the end cylindrical portion 94 at the inlet end 91 of the Venturi seotion 90 for a purpose hereinafter described. However, each end 91 and 92 has three annular grooves 95, 96 and 97 formed therein which respectively define intermediate outwardly directed annular rib-like portions 98 and ;~ 99 as illustrated. In addition, each end 91 and 92 has an outwardly directed annular flangs 100 that c~ooperated with an intermedlate enlarged cylindriaal body portion 101 to def~ne an annular groove 102 therewith, each~flange 100 extending outwardly beyond the ribs 98 and 99 as well as beyond its respective end cylindrical portion 94, ;as illustrated.~ Therefore, it can be seen that the Venturi section 90 has a sub:tantially circular cross-sectional configuration ~hroughout the length thereof, with the diameter thereof varying as illustrated.
The inner hose 36 has adjacent ends 103 and ~ - 19 -. ;
, ~ 3 1 6~59 104 adapted to be respectively telescopically disposed over the ends 91 and 92 of the Venturi seation 90 as illustrated, with the respective end surfaces 105 and 106 of the hose ends 103 and 104 abutting against the respective flanges 100 so as to limit the degree of insertion o the ends 103 and 104 on the respective ends 91 and 92 of the Venturi section 90. However, either before or at the same time that the ends 103 and 104 of the inner tubular member 36 are being telescoped over the ends 91 and 92 of the Venturi section 90, substantially cylindrical me-tal sleeves 107 are telescoped over the ends 91 and 92 of the Venturi section 90, as illustrated in FIGS. 10 and 11, with each sleeve 107 having an initially inwardly turned annular flange 108 that is of a size that permits the same to readily slip over its adjacent flange : 100 and be aligned with its annular groove 102, as illustrated to the right in FIG. 11; the internal diameter of the inner hose 36 is substantially the same as the outer diameter of;the cylindrical part 94 and the ribs 98 and 99 of the respectivs and 91 or 92 of the Venturi section, as illustrated by the right-hand portion of FIG. 11.
Thereafter, the sleeves 107 are radially inwardly compressed in any suitable manner, such as , ; - 20 -'' ' .
.
.
, . , ~, . :
,` , ' : , ~ .
1 31 ~q5~
in the manner set forth ln -the U.S~ patent No.
whereby each radially inwardly compressed sleeve 107 radially inwardly compresses the respective end 103 or 104 of the inner hose 36 lnto the annular grooves 95 96 and 97 in the manner illustrated in FIG. 8 and the left-hand portion of FIG. 11 at the same time that the turned flange 108 of the sleeve 107 is received into tlle annular groove 102 to hold the collapsed sleeve 107 on the Venturi section 90.
It can be seen in FIG. 8 that t~le outer peripheral surface of each radially lnwardly compressed sleeve 107 is substantially coplanar with the external peripheral surface 37 of the inner tubular member 36~as illustrated.
In thls manner it can be seen that the eEfective overall leng-th of the straight Venturi portion of the inner hose 36 can be reduced over the effective straight length of the Venturi portlon of the prlor known arrangement illus~rated in FIG. 15 ~ becauss the effective straigh-t length ~: of the Venturi portion illustrated in FIG. 8 ls ~; approximately only 8.826 cm (3.475 inches) whereas the effeGtive straight length of the Venturi :::
portion illustrated in FIG. 16 is approximately . : ~
. . , ,. " ................................................ .
he features of this invention, and its : ~ technical advantages, can be seen from the ~ following description of preferred embodiments, ~ together with the claims and the accompanylng , ~
:~ - 5 -, ''''''"'' ''' ' -~` 1 3 1 6959 drawings, in which:
FIG. 1 is a side view of the hose assembly of this invention being utilized for dispensing gasoline from a conventional curbside gasoline pump or the like to a nozzle means for insertion in the gasoline tank of a transportation vehicle or ths like.
FIG. 2 is an enlarged fragmentary perspactive view of one end of the hose assembly of this invention.
FIG. 3 is an exploded perspective view of the various parts of the end of the hose assembly of FIG. 2.
FIG. 4 is a perspective view 111ustrating the parts of FIG. 3 in their assembled rslation.
FIG. 5 is a fragmentary cross-sectional view taken on line 5-5 of FIG. 4.
;FIG.~ 6 is a fragmentary cross-sectional view illustrating certaln parts of the hose assembly of this invention.
:
FIG.~ 7 is a fragmentary perspective view illustrating the Venturi section of the inner hose ; o~ the hose~assembly of this invention.
FIG. a is: an enlarged fragmentary cross-sectional view taken on line 8-8 of FIG. 7.
FIG. 9 is a cross-seational view taken on line ~. ~
' ~
~:, :
: ,, . :
1 3 1 ~95q 9 9 of FIG. 8.
FIG. 10 is a reduced exploded view of the parts of the Venturi portlon of the hose assembly of this inven-tion before the same have been assembled together.
FIG. 11 is a view similar to FIG. 10 and illustrates how the parts of the assembly of FIG.
10 are secured together. ~;
FIGS. 12A and l2s~ when placed end-to-end, provide an enlarged fragmentary cross-sectional view which illustrates how the inner hose of the hose assembly of this invention has the Venturi section thereof arranged in the drape of the hose assembly at a gasoline pump or the ll)ce.
FIG. 13 iS a fragmentary view similar to FIG.
12A and illustrates the Venturl sectlon in another oparating posltion thereof ln the hose assembly.
FIG. 14 ls a view slmllar to FIG. l and illustrates the drape of the prior known hose assembly as set forth in Canadian Patent No. 12~7806.
F`IG. 15 is an enlargad fraginentary view, partlally in cross section, of the Venturi portlon of the inner hose of the prior known hose assembly of FIG. 14.
,;, ,/, .. ,,.. ~,., ............................... :
1316q5~
FIG. 16 is an enlarged fragmentary cross-sectional view of one end of the Venturi section and the inner hose of FIG. 15.
FIG. 17 is a cross-sectional view of another Venturi section of this invention.
FIG. 18 is a view similar to FIG. 17 and ~ illustrates another Venturi section of this ; invention.
FIG. 19 is a view similar to FIG. 17 and illustrates another Venturi section of this invention, FIG. 19 illustrating the Venturi section in one operating position thereof.
FIG. 20 is a view similar to FIG. 19 and illustrates the Venturi seation in another operating position thereof.
FIG. 21 ~s a view similar to FIG. 17 and illustrates another Venturi section of this nventionO
FIG~. 22 is a view similar to FIG. 17 and illustrates another Venturi section of thls invention.
FIG. 23 is a view similar to FIG. 17 and illustrates another Venturi section of this invention.
FIG. 24 is an enlarged fragmentary view of the Venturi section of FIG. 23 and illustrates the same .
,: ~ ; , ' 131~959 in one operating position thereof.
FIG. 25 is a view similar to FIG. 24 and illustrates the Venturi section in another operating condition thereof~
While the various features of this invention are hereinafter illustrated and described as being particularly adapted to provide a hose assembly for conveying volatile fluids, it is to be understood that the various features of this invention can be utilized singly or in various combinat~ons thereof to provide a hose assembly for other purposes as desired.
Therefore, this invention is not to be limited to only the embodiments illustrated in the drawings, because the drawings are merely utilized to illustrate one of the wide variety of uses of : : : : this invention.
::: : : : :
Referring now to FIG. 1, the new hose assembly : of this~invention is generally indioated by the : 20 reerence numeral 30 and is shown in FIG. 1 as : :having one end 31 thereof interconnecte:d to a aonventlonal gasoline pump 32 or the lika, and the :oth:er end~ 33 thereof interconnected to a : conventional dlspensing nozzle 34 which is shown in a normal position for dispensing uel into the gas tank or storage container of a transportation ::
g : :
.... .. . .
~ -,, .
1 31 6q59 vel~icle or tl1e l1ke ( not sl~own ); an inter111ediateportion 35 of tlle hose assembly 30 provides a low portion or drape thereof from wl~icl~ any collected liqui~l thereln is to be removed by tlle hose assembly 30 o tllis invention in a manner l~ereinafter set fort1l a11d for tl e reasons set forth in tl1e aEorementioned U. S . patent to Furrow et al No. 4 687 033 Ihe hose assembly 30 of tl1is invent1on is best lO illustrated ln FIG. 6 al1d camprises a flexible inner hose 36 that l~as an outer E~erip1~eral surface 37 and deflnes an inl1er fluid passage 3B therein through whlch tlle volatlle llquia from t11e pump neans 32 1.s adapted to be conveyed ln a dlrection -towar(l the nozzle constructio1~ 34 11l a conventlonal man1~er.: T}le hose assembly 30 also comprlses a f:lexible 3uter 11ose 39 tllat l1as an inner perlp}leral sorEace 40 ~ that cooperates wlth tlle outer per~ipheral surface 37 of the inl1er hose 36 to :20 ~ ~efine an outer flu1d passage 41 tl-erebetween and throug11 whlcl1 vapors of tllé dispensed volatlle liquid ~ can be returned rom t11e nozzle means 34 back to tlie pump 1neal1s 32 in a. mallllfar convenl~ional ; in -the ar~f sucl) as set fort1~ ln tl1e aforement1oned fi~
' ;' ' ' ' ,;~ ' , ' ' ' :, , ,', ':. ~
U.S. patent to Furrow et al l~o. 4 687 033 as well as in another U.S. patent to Furrow et al, No.
4 566 504 and tlle U.S. patent to Bas~lam No.
3, 9~0, 1120 While the inner llose 36 has substantially smootll inler alld outer peripl~eral surfaces tlle main body portior 42 of tle outer hose 39 is corrugated in a helic~l m~nner to deflne al-ternating crests 43 and valleys 44 on t?e lnner peril~l eral surEace 40 tllereof as well as corresponding and a1terl~ati-9 crests ~5 and valleys 46 on the ou~er peri~lleral surface 47 tlereof as illustrated in FIG. 6 eacl irner crest 43 and each inner valley 44 defiliing an arcuate surface for a purpose l~ereillafter described.
In additiol- the outer l~ose 39 has a relnforclng wire-lilce member 4~ secured ~o tl~e inner peripheral surface 40 thereof and also being disposed in~a helical mallner ailong tlle length of 20~ -tlle body portion 42 of tle outer l~ose 39 the wire reinforcing member 4n being Eonned of any suitable : Illaterial~ SilCh as metallic mater1al and tl~ereby rendering tl~e outer l~ose 39 substan~ially resistant to inward orush1ng tllereof about tl~e inner ~ose 36 , .:
.,~,".......................... ' :
.. . .
for a purpose hereinafter set forth. However, because the body portion 42 of the outer hose 39 is corrugated in the manner previously set forth, the outer hose 39 is relatively flexible.
While the body portion 42 of the ou-ter hose 39 can be formed of any suitable material, one working embodiment thereof is formed by -the method of providing a precurved metallic wire helix 49 (FIG.
12A) with an external urethane coa-ting 50 thereon.
Thereafter, an outer cover 51 of urethane is extruded over the coated reinforcing member 48, whereby -the coating 50 thereon enhances the adhesion of the outer urethane material 51 to the reinforcing wire 48 while the resulting structure has the wire 49 effectively embedded therein. Of course, the body portion 42 of the outer hose 39 ~: ~ could be formed of differant material and by a different method, if desired.
, In order to attach outer couplings 52 to the opposed ends of the body portion 42 of the outer hose~ 39, substantially smooth and nonreinforced :~ :
; ~ ~oyllndrical cuffs 53 of urethane are respectively bonded~ or moldèd to the opposed ends 54 of the outer hose 39 as illustrated in FIGS. 3 and 5, so that the cuffs 53 can be subsequently secured to the couplings 52 in any suitable manner, such as :::
~ 12 - ~
.
, ' ., '' , ~ 3 1 695~
the manner set forth in the aforementioned U.S.
patent to Basham, No. 3,980,112.
However, before the cuffs 53 are molded on the ends 54 of the outer hose 39, an end por-tion 55 of the reinforcing wire 48 at each end 54 of the outer hose 39 has not only the coating 50 thereon removed but also the outer cover 51, so that the end portion 55 of the wire 48 will tend to extend outwardly beyond the outer peripheral surface 56 of the subsequently molded cuff 53 in the manner illustrated in FIG. 3 so as to provide an electrical conneotion between the opposed end couplings 52 of the hose assembly 30 for antistatic purposes.
In particular, each coupling 52 comprises an outer metal tubular coupling member 57 that is adapted to be telescoped ovar the respective cuff 53 and to have a plurality of inwardly directed ribs 58 thereof embedded into the respective cuff 53 when an internally disposed metallic sleeve 59 is outwardly expanded within the:coupling member 57 in the manner illustrated in FIG. 5:to hold the cuff~ 53 to the ooupling 52. The bared end 55 of the wire: 48 is maintained in electrical contact with the internal peripheral surface 60 of the , ~ metallic coupling member 57 in the manner :: :
~ 13 -131695q illustratad in FIG~ 5. In this manner, the wire 48 electrically interconnects the two end couplings 52 for tha hose assembly 30.
Each coupling 52 includes a tubular member 61 that is rotatably disposed thereon between an annular shoulder 62 of the tubular member 57 and a split ring retainer 63 as illustrated in FIG. 5.
:The member 61 can have external threads 64 thereof threaded to internaI threads (not shown) so as to couple the coupling 52 to either the nozzle construction 34 or the coupling structure 65 of the pump 32 in a manner conventional ln the art.
The tubular member 57 of the coupling 52 defines aD internal annular shoulder 66 against ; : which~ a ~clip m~ans 67, FIG. 2, abuts~ so: as to substsntia11y concentricslly mount an~ end f~itting 68 of the~ inner hose 36 within the respective coupling 52 in substantially the same~manner as set forth in the aforementioned U.S. patent to Basham, No. 3,9B0,112. In this msnnsr, esch end of the inner hoss~36 i~s supported by the snd clip means 67 in the: couplings ~52 at:the oppoqed ends of the :: :: : :
outar hoee 39,~whereby the lnner hosa 36 is aarried : : in the outer hose 39 to complete the hose assembly 30.
; Sinae the coupling 52 and cIip means 67 for ~ .
:, , , .
: : , , .
.
, .
1 3 1 6q5q the hose assembly 30 of this invention are fully disclosed and claimed ln Canadian Patant No. 1297806, a fur-ther discussion thereof is deemed unnecessary o-ther -than to state that when the hose assembly ~0 is coupled to the nozzle construction ~ and to the gasoline pump 32 in the manner illustrated in FIG. 1, the fluid passage 38 in the inner hose 36 is adapted to direct volatile fuel from -the pump means 32 to the nozzle 34 to be dispensed therefrom in a conventional manner, while the second fluid passage 41 defined between the outer hose 39 and the inner hose~ 36 is adapted to be utilized to return vapors~
from the dispensing operation at the nozzle construction 34 back to the pump means ~32 for a vapor recovery purpose tha-t is well known in the art.
It is also known, as fully described in the aforementioned U.S. patent to Furrow et al, No.
4,687,033, that liquid in the outer passage 41 of the hose assembly 30 tends to collect at the low point or drape area 35 of the hose assembly 30 as illustrated ~in FIG. 1, and it ls known from others to include a Venturi section in the lnlier hose 36 so that the same can have its inlet means disposed . ,. . : . : .
1316~59 in the passage means 41 at the drape area 35 for sucking the collected liquid from that drape area 35 and direc-ting the same back into the inner fluid passage 38 of the inner hose 36 so as to be directed back to the nozzle 34 as the liquid face flows through the inner passage 38 from the pump means 32 and passes through the Venturl section to the nozzle construc-tion 34.
As previously stated, l-t was found, according to the teachings of this invention, that such an internal Venturi sec-tion as se-t forth in the Canadian Patent No. l297806, resulted in the effective length of the s-traight portion of the inner hose of the ilose assembly~ to be relat~vely long,: so that the drape area thereof cannot:be bent by a user of the hose assembly 3Q io properly dlspensing fuel from the pump means 32 to ~that user's gasoline tank.
: 20 : ~ For example, reference is now made to ~IG. 14, ~: whereln the prior known hose assembly ~s generally : : ~indlcated by the reference numeral 30A, and the drape~or low area~35A thereof ls shown has havlng a relatively long straight section therein that is provided by the effective straight length: of the Venturi section in the inner hose thereof.
: - 16 -,~;~., ; :
,, " ';
~ ~ .
': : ' , ~ :
.
.~ :
1~1695q In particular, such prior known hose assembly 30A has the inner hose 36A thereof, as illustrated in FIGS. 15 and 16, provided with a straight Venturi section 70 that is formed of metallic material and has a flow passage 71 passing therethrough and through the opposed ends 72 and 73 thereof. The flow passage 71 has a raduced throat area 74 which communicates with a plurality of port means 75 that extend subs-tantially radially outwardly to communicate with the outer flow passage in the hose assembly (not shown) to draw any liquid contained therein into the throat portion 74 and, thus, into the flow passage 71 for the reasons previously set forth. Each port:means 75 has a one-way check valve means 76 disposed therein so as to prevent liquid from flowing from :
the Venturi section 70 outwardly through the port means 75.
:~ :The opposed ends 72 and 73 of the Venturi ~ 20 section 70 are respectively interconnected to ::
:adjacent and portions 77 and 78 of the inner hose :36A by like coupling members:79.~ As lllustrated in FIG. 16, eaah coupling member 79 has an externally thr0aded and 80 that threads~ lnto the adjacent internally threaded end 73 of the Venturi section : 73 and is~sealed thereto by suitable sealing means :, :
"' , . .
1 3 1 695~
81. The respective coupling member 79 is in turn interconnected to its adjacent end 78 of the inner hose 36A by having that end 78 teleslcoped within a tubular portion 82 of the coupling member 79 and being outwardly radially compressed by an expanded metallic sleeve 84 into annular grooves 83 formed internally in the tubular portion 82.
However, it was found that such a coupling arrangement for the Venturi section 70 created a straight length in the inner hose 36A that was approximately 14.186 cm (5.585 inches), which resulted in the substantlally straight unbendable section 35A in the hose sssembly 30A as illustrated in FIG. 14.
Accordlngly, it was found according to the te~achlngs of this lnYention that the adjacent ends of the inner hose could be telescoped onto adjacent ends of the Venturi section so as to reduce the overall effPctive straight length of the Venturi portion of the inner hose as well as to provide a smooth transition between the inner hose and the Vanturi section.
For example, reference is now made to FIGS. 7 and 8 wherein the new Venturi section of this lnvention~is generally indlcated by the reference numeral 90 and comprises a substantially ': ~ ' ': ;, .~ , .
' ;, cylindrical block of m0tallic material having opposed ends 91 and 92 through which a ~low passage 93 extends, with the flow passage 93 being uni~uely arranged in a manner hereinafter set forth.
Each end 91 and 92 of the Venturi section 90 has an end cylindrical portion 94, with the end cylindrical portion 94 at the end 92 being longer than the end cylindrical portion 94 at the inlet end 91 of the Venturi seotion 90 for a purpose hereinafter described. However, each end 91 and 92 has three annular grooves 95, 96 and 97 formed therein which respectively define intermediate outwardly directed annular rib-like portions 98 and ;~ 99 as illustrated. In addition, each end 91 and 92 has an outwardly directed annular flangs 100 that c~ooperated with an intermedlate enlarged cylindriaal body portion 101 to def~ne an annular groove 102 therewith, each~flange 100 extending outwardly beyond the ribs 98 and 99 as well as beyond its respective end cylindrical portion 94, ;as illustrated.~ Therefore, it can be seen that the Venturi section 90 has a sub:tantially circular cross-sectional configuration ~hroughout the length thereof, with the diameter thereof varying as illustrated.
The inner hose 36 has adjacent ends 103 and ~ - 19 -. ;
, ~ 3 1 6~59 104 adapted to be respectively telescopically disposed over the ends 91 and 92 of the Venturi seation 90 as illustrated, with the respective end surfaces 105 and 106 of the hose ends 103 and 104 abutting against the respective flanges 100 so as to limit the degree of insertion o the ends 103 and 104 on the respective ends 91 and 92 of the Venturi section 90. However, either before or at the same time that the ends 103 and 104 of the inner tubular member 36 are being telescoped over the ends 91 and 92 of the Venturi section 90, substantially cylindrical me-tal sleeves 107 are telescoped over the ends 91 and 92 of the Venturi section 90, as illustrated in FIGS. 10 and 11, with each sleeve 107 having an initially inwardly turned annular flange 108 that is of a size that permits the same to readily slip over its adjacent flange : 100 and be aligned with its annular groove 102, as illustrated to the right in FIG. 11; the internal diameter of the inner hose 36 is substantially the same as the outer diameter of;the cylindrical part 94 and the ribs 98 and 99 of the respectivs and 91 or 92 of the Venturi section, as illustrated by the right-hand portion of FIG. 11.
Thereafter, the sleeves 107 are radially inwardly compressed in any suitable manner, such as , ; - 20 -'' ' .
.
.
, . , ~, . :
,` , ' : , ~ .
1 31 ~q5~
in the manner set forth ln -the U.S~ patent No.
whereby each radially inwardly compressed sleeve 107 radially inwardly compresses the respective end 103 or 104 of the inner hose 36 lnto the annular grooves 95 96 and 97 in the manner illustrated in FIG. 8 and the left-hand portion of FIG. 11 at the same time that the turned flange 108 of the sleeve 107 is received into tlle annular groove 102 to hold the collapsed sleeve 107 on the Venturi section 90.
It can be seen in FIG. 8 that t~le outer peripheral surface of each radially lnwardly compressed sleeve 107 is substantially coplanar with the external peripheral surface 37 of the inner tubular member 36~as illustrated.
In thls manner it can be seen that the eEfective overall leng-th of the straight Venturi portion of the inner hose 36 can be reduced over the effective straight length of the Venturi portlon of the prlor known arrangement illus~rated in FIG. 15 ~ becauss the effective straigh-t length ~: of the Venturi portion illustrated in FIG. 8 ls ~; approximately only 8.826 cm (3.475 inches) whereas the effeGtive straight length of the Venturi :::
portion illustrated in FIG. 16 is approximately . : ~
. . , ,. " ................................................ .
5 q 14.186 cm ~5.585 inches).
In this manner, such shortened effective straight length of the inner hose 36 permits the inner hose 36 to be disposed with a more curved draped portion 35 of the hose assembly 30 when the same is assembled to the pump 32 and nozzle 34 and the nozzle 34 is being disposed in the dispensing position illustrated in FIG. 1 and in the manner illus-trated in FIGS. 12A and 12B.
The enlarged central portion 101 of the Venturi section 90 has a plurality of radially disposed port means 110 formed therethrough and leading to the fluid passage 93 through the Venturi section 90 at one end thereof and to the exterior of the Venturi section 90 at the othe:r end thereof so as to communicate with the fluid passage 41 to suck any liquid fuel contained therein from the low portion or drape 35 of the hose assembly 30 as previously set forth. However, a plurality of one-way check valve means 111 are disposed in the port means llO~in enlarged outer :ends 112 thereof, the check valve means 111 each comprising a tubular housing means 113 having an internal valve seat 114 therein that is adapted to be opened and closed by , a one-way umbrelIa type check ualve member 115 carried~by the~housing means 113.
~ .
': ~
, ': , ., ' ' ~ . ~ ' ,~ ' .
, ., ' Each check valve means 111 includes a substantially flat disc-like filter member 116 that defines an inlet for the respective port means 110 so as to filter any fluid flow therethrough which will be created by the fluid flow through the passage means 93 from the end 91 thereof to the end 92 thereof in a manner well known in the Venturi art so that the fluid flow through the inlet 116 opens the umbrella valve member 115 and permits the liquid to flow through the port means 110 to the flow passage 93 as previously set forth, and to be entrained in the fuel flow therethrough.
llhe port means 110 in the Venturi section 90 are disposed in a uniformly spaced apart clrcular array thereof as illustrated in FIG. 9 so that in ny position of the Venturi section 90 in the hose assembly 30, at least one of the port means 110 : ~ will be below the center line of the Venturi block 90 so as to remove liquid from the lower portion of the drape 35 of the hose assembly 30.
: As set forth in CanadianPatent No. 129780~
the size of ~; the inlets 116 and the size of the internal crests and valleys 43 and 44 1s such that even though one : of the port means 110 is pointing directly - 23 ~
,!~; I
.. ... . . .
1316q5~
downwardly so as to engage against the internal peripheral surface 40 of the outer hosa 39 in the manner illustrated in FIG. 12A or 13, wherein -the inlet 116 is bridging a valley 44 in FIG. 12A or engaging against a crest 43 as illustrated in FIG.
13, that inlet 116 is not blocked by the internal peripheral surface 40 because of the size of the crests and valleys 43 and 44 and the size of the particular inlet 116.
In particular, in one working embodiment of the hose assembly 30 of this invention, the diameter of the inle-t or filter means 116 is approximately 0.808 cm (0.318 of an inch), the maximum diametsr of the Venturi section 90 a-t the inlets 116 that describes a circle is approximately 2.718 cm (1.070 inches), the inside diameter of the outer hose 39 at the crests 43 thereof is approximately 3.175 cm (1.250 inches), the inside diameter at the valleys thereof is approximately 3.302 cm (1.300 inches), the outside diameter of the hose 39 at an external crest 45 is approximately 3.810 cm (1.500 in-hes), the pitch between ad;acent turns of the wire reinforcing means 48 is approximately 0.846 cm (0.333 of an inch), the thickness of the wall covering 51 is ~ .
~: approximately 0.102 cm (0.040 of an inch), the ;~ .
.
', ~
.
' . . ' ' ` `
1316q5q diameter of the wire means 48 is approximately 0.152 cm (0.060 of an inch) as the wire 49 has a diameter o approximately 0.127 cm (0.050 of an inch) and the thickness of the covering 50 on the wire 49 is approximately 0.013 cm (0.005 of an inch), the outside diame-ter of the inner hose 36 is approximately 2.286 cm (0.900 of an inch), and the inside diameter is approximately 1.588 cm (0.625 of an inch), with the inner hose 36 being formed of nitrite rubber that is internally reinforced with a wire braid or cloth braid, and, as previously set forth, the leng-th of tha Venturi sectlon 90 is approximately 8.826 cm (3.475 of an inch).
The flow passage 93 through the Venturi sec-tion 90 is uniquely arranged so as to define an intermodlate cylindrical portion 117 tha-t has opposed ends 118 and 119 with a substantially uniform circular transverse cross-sectional , conflguration throughout the length thereof, the ports 110 lnterrupting the cylindrlcal portion 117 : : closely adjacent the downstream end 119 thereof as : illustrated in FIG. 8.
The ~flow passage 93 o the Vanturi section 90 defines an lnlet portion 120 that is substantially frusto-conlcal,~with its smaller base 121 ~oining the end:118 of the cylindrical portion 117 and , , :
- : :
-.
~ ~ \
1 31 6q59 having substantially the same diameter therewith,and with the larger base 122 of the frusto-conical portion 120 interrupting the end surEace 123 of the Yenturi section 90 at a point closely adjacant the internal peripheral surface 124 of the inner hose 36, as illustrated.
An outlet frusto-conical portion 125 is formed by the passage 93 at the end 92 of the Venturi section 90, with the frusto-conical portion 125 having a small base 126 and a large base 127, with the large base 127 interrupting the end surface 128 of the Venturi section 90 so as to be disposed closely ad~acent the internal peripheral surface 129 of the inner hose 36, as illustrated.
Another frusto-conical portion 130 is formed by the passage 93 in the Venturi section 90 intermediate the cylindrical portlon 117 thereof and the outlet frusto-conical portion 125, with the frusto-conical portion 130 having a smaller base 131 thereof joining the end 119 o the cylindrical portion 117 and baing substantially of the same diameter therewith, while tha larger base 132 of the frusto-conical portion 130 joins the smaller ~; ~ bese 126 of the end frusto-conical portion 125 and ~ has substantially the same diameter therewi-th.
,~ In the previously described working embodiment ~ ~ - 26 -,~:
.
. -131695~
of the Venturi section 90 of this invention, tha section 90 is formed of aluminum, the length of the cylindrical portion 117 is approximately 1.918 cm (0.755 of an inch) with a diameter o:E approximately 0.572 cm (0.225 of an inch), the length of the inlet frusto~conical portion 120 is approximately 2.438 cm (0.960 of an inch) with the larger base 122 thereof having a diameter of approximately 1.524 cm ~0.600 of an inch) so that the angle being defined by the frusto-conical portion 120 is approximately 22, the intermediate frusto-conical portion 130 has a length of approximately 3.607 cm (1.402 inches) with the laxger base 131 thereof defining a diameter o~ approximately 1.029 cm (0.405 of an inch) so that the same makes an angle of approximately 7, and the outlet frusto-conical .
:portion 125 has a length of approximately 0.902 cm (0.355 of an inch) with the larger base 127 thereof ~ :
: having a diameter of approximately 1.524 cm (0.600 20 : of an inch) so that the same defines an angle of approximately 31.
: It~ was found according to the teachings of : this invention that the aforementionad working ~:~ embodiment of the Venturi section 90 provided for a smooth transition of the flow of fuel from the inlet ~nd 103 of the inner hose 36 through the flow :
passage 93, and by having the two-stage exit frusto-coniaal portions 130 and 125, the initial gradual 7 angle of the first frusto-conical portion 130 seems to pre~ent flow separation beore the fluid expands outwardly into the outlet frusto-conical portion 125 so as to tend to help prevent "movement" of the low pressure location of the pressure drop in the cylindrical portion 117 that performs the sucking function as previously se-t forth. Also, it has been found that the cylindrical portion 117 can have an increased diameter over the diameter of the prior known Venturi seation (0.572 cm versus 0.554 cm) so as to reduce pressure drop therethrough which allows for higher flow rates to the nozzle construction 34 by ~: :
the pump means 32.
Therefore, it can be seen that in the ~: operation of the hose assembly 30 of this ~ ~ invention, whenever an operator dispenses fuel out ; 20 of the nozzle construction 34 into a gasoline tank or the like, the Venturi section 90 will be located : in the lowest portion or drape 35 of the hose assembly 30, and becau~e of the flow of fuel through the flow passage 93 of the Venturi section 90, a vacuum is created in the port means 110 which tends to draw any liquid that ls collected in the i:::
' ~ .
-1 31 6~5q outer passage 41 of the hose assembly 30 in the drape or low area 35 thereof into the fuel flowing through the f}ow passage 93 so as to remove the same from blocking the flow passage 41 which returns the vapors to the pump means 32 in a manner aonventional in the art.
In addition, it can be seen that because the straight portion of the Venturi section 90 is the only part that requires the inner hose 36 to be substantially straight in the low area 35 of the hose assembly 30, the hose assembly 30 can have the drape or low area 35 thereof relatively arcuate in contrast to the nonarauate low portion of the prior known hose assembly arrangement illustrated in FIG.
14.
~:
~; Ther~fore, it can be seen that this invention not only provides a new hose assembly but also this invention provides a new method for making suah a hose assembly.
~ 20 While certain dimensions have been previously ;~ set forth in regards to on~ working embodiment of the~hose assembly 30 of this invention, it is to be understood that the dimensions given are merely for : an example o one working embodiment of this :
invention,: and it~is not to be a limitation on the alaims of this invention.
'~ ~
. .' : :
1316~59 Further, while a certain umbrella type of one-way check valve has been provided for the port means 110 of the Venturi section 90 of this invention, it is to be understood that other structures can be utilized for blocking flow through the port means of the Venturi section when the Venturi section is not providing a sufficient suction.
For example, reference is now made to FIG. 17 wherein another Venturi section of this invention is generally indicated by the reference numeral 90B; it can be seen that the port means llOB
; thereof has a duckbill-type of one-way check valve means 133 disposed therein rather than the umbrella type of cheak valve means 115 previously described.
: Similarly,:i-t can be seen in FIG. 18 that another Venturi~section 9OC of this invention has a : -one-way spring biased ball valve member 134 urgrd against a valve seat 135 by a compression spring 136 to provide for the one-way flow through the :: :: port means llOC.
Instead of a one-way check valve means, the ~:: :: Venturi section can be provided with a slide maans which wil1 open~rnd closr the port mernr thrreof.
For example, reference is now mad~ to FIGS. 19 ~ and 20 whrrein another Venturi section of this ,:
. :,.. ,, . ~ .
:
invention is indioated by the reference numeral 90D
and the same has a port means llOD leading to an internal peripheral surface 136 thereof. A movable tubular member 137 is disposed within the Venturi section 90D and has its external peripheral surface 138D disposed closely adjacent the internal peripher~l surface 136 and is urged to the left in FIG. 19 by a compression spring 139. The member 137 has an internal Venturi-forming portion 140 that is interrupted by a portion means 141' which will align with the port means llOD when the member 136 is moved to the right, as illustrated in FIG.
20, by fluid flowing through the Venturi section 90D from left to right, so that the aligned port means llOD and 141' can provlde the passage for the suction created by the Venturi-forming portion 140 in a manner well known in the art, the valve member 137 aarrying 0-ring seal means 141 on opposite sides of the port 141' thereof so as to seal 20 between the members 90D and 137 when -the port means 141' is aligned with the port means llOD as illustrated in FIG. 20, while one of~the seal means :~ :
; : 141 coaperates with another seal means 142 to seal on opposite sides of the port llOD when the member 137 is disposed in its nonaligned condition : illustrated in FIG. 19.
''' .
:`
1 3 1 6q59 Another such movable member 143 is provided in FIGS. 23-25 and is utilized to open and close the port m~ans llOE of a Venturi section 9OE when the flow of fuel moves the member 143 against the force of a compression spring 144 upon flowing from left to right through the flow passage g3E thereof as illustrated in FIG. 25, the amount of opening of ths member 143 away from the port means llOE being controlled by the amount of fuel flowing through the Venturi passage 93E.
Of course, in any of the Venturi seations of this invention, bypass passages ould be providrd therein to bypass some of the fuel flow through the Venturi section withou-t utilizing that flow or fuel for creating~the suction reguired to empty liquid from the passage of the hose assembly.
For example, the Yenturi section 9OF
.~ :
~ : illustrated in FIG. 21 has: at least one bypass -: :
openlng 145 passing therethrough so that fuel can flow through the passage 145 from left to right in FIG~ 21 without passing through the throat portion :: : : : :
;;117F of~:the flow passage 93F and thereby permits a greater amount of fuel to flow through the Venturi : section 9OF than when the bypass passage 145 is not being utilized.
If:desired, the flow passage 145 could have s 32:-~:
- ~ -1 31 6q59 one-way check valve means disposed therein, such as the one-way check valve means 146 illustrated in FIG. 22.
In any event, it can be seen that various changes can be made in the structure of the Venturi section 90 of this invention with the Venturi section 90 still operating in substantially the same manner as the Venturi section 90 previously set forth~
:
: :: : :
~ :: :: : :
:~
.
, . :
.
In this manner, such shortened effective straight length of the inner hose 36 permits the inner hose 36 to be disposed with a more curved draped portion 35 of the hose assembly 30 when the same is assembled to the pump 32 and nozzle 34 and the nozzle 34 is being disposed in the dispensing position illustrated in FIG. 1 and in the manner illus-trated in FIGS. 12A and 12B.
The enlarged central portion 101 of the Venturi section 90 has a plurality of radially disposed port means 110 formed therethrough and leading to the fluid passage 93 through the Venturi section 90 at one end thereof and to the exterior of the Venturi section 90 at the othe:r end thereof so as to communicate with the fluid passage 41 to suck any liquid fuel contained therein from the low portion or drape 35 of the hose assembly 30 as previously set forth. However, a plurality of one-way check valve means 111 are disposed in the port means llO~in enlarged outer :ends 112 thereof, the check valve means 111 each comprising a tubular housing means 113 having an internal valve seat 114 therein that is adapted to be opened and closed by , a one-way umbrelIa type check ualve member 115 carried~by the~housing means 113.
~ .
': ~
, ': , ., ' ' ~ . ~ ' ,~ ' .
, ., ' Each check valve means 111 includes a substantially flat disc-like filter member 116 that defines an inlet for the respective port means 110 so as to filter any fluid flow therethrough which will be created by the fluid flow through the passage means 93 from the end 91 thereof to the end 92 thereof in a manner well known in the Venturi art so that the fluid flow through the inlet 116 opens the umbrella valve member 115 and permits the liquid to flow through the port means 110 to the flow passage 93 as previously set forth, and to be entrained in the fuel flow therethrough.
llhe port means 110 in the Venturi section 90 are disposed in a uniformly spaced apart clrcular array thereof as illustrated in FIG. 9 so that in ny position of the Venturi section 90 in the hose assembly 30, at least one of the port means 110 : ~ will be below the center line of the Venturi block 90 so as to remove liquid from the lower portion of the drape 35 of the hose assembly 30.
: As set forth in CanadianPatent No. 129780~
the size of ~; the inlets 116 and the size of the internal crests and valleys 43 and 44 1s such that even though one : of the port means 110 is pointing directly - 23 ~
,!~; I
.. ... . . .
1316q5~
downwardly so as to engage against the internal peripheral surface 40 of the outer hosa 39 in the manner illustrated in FIG. 12A or 13, wherein -the inlet 116 is bridging a valley 44 in FIG. 12A or engaging against a crest 43 as illustrated in FIG.
13, that inlet 116 is not blocked by the internal peripheral surface 40 because of the size of the crests and valleys 43 and 44 and the size of the particular inlet 116.
In particular, in one working embodiment of the hose assembly 30 of this invention, the diameter of the inle-t or filter means 116 is approximately 0.808 cm (0.318 of an inch), the maximum diametsr of the Venturi section 90 a-t the inlets 116 that describes a circle is approximately 2.718 cm (1.070 inches), the inside diameter of the outer hose 39 at the crests 43 thereof is approximately 3.175 cm (1.250 inches), the inside diameter at the valleys thereof is approximately 3.302 cm (1.300 inches), the outside diameter of the hose 39 at an external crest 45 is approximately 3.810 cm (1.500 in-hes), the pitch between ad;acent turns of the wire reinforcing means 48 is approximately 0.846 cm (0.333 of an inch), the thickness of the wall covering 51 is ~ .
~: approximately 0.102 cm (0.040 of an inch), the ;~ .
.
', ~
.
' . . ' ' ` `
1316q5q diameter of the wire means 48 is approximately 0.152 cm (0.060 of an inch) as the wire 49 has a diameter o approximately 0.127 cm (0.050 of an inch) and the thickness of the covering 50 on the wire 49 is approximately 0.013 cm (0.005 of an inch), the outside diame-ter of the inner hose 36 is approximately 2.286 cm (0.900 of an inch), and the inside diameter is approximately 1.588 cm (0.625 of an inch), with the inner hose 36 being formed of nitrite rubber that is internally reinforced with a wire braid or cloth braid, and, as previously set forth, the leng-th of tha Venturi sectlon 90 is approximately 8.826 cm (3.475 of an inch).
The flow passage 93 through the Venturi sec-tion 90 is uniquely arranged so as to define an intermodlate cylindrical portion 117 tha-t has opposed ends 118 and 119 with a substantially uniform circular transverse cross-sectional , conflguration throughout the length thereof, the ports 110 lnterrupting the cylindrlcal portion 117 : : closely adjacent the downstream end 119 thereof as : illustrated in FIG. 8.
The ~flow passage 93 o the Vanturi section 90 defines an lnlet portion 120 that is substantially frusto-conlcal,~with its smaller base 121 ~oining the end:118 of the cylindrical portion 117 and , , :
- : :
-.
~ ~ \
1 31 6q59 having substantially the same diameter therewith,and with the larger base 122 of the frusto-conical portion 120 interrupting the end surEace 123 of the Yenturi section 90 at a point closely adjacant the internal peripheral surface 124 of the inner hose 36, as illustrated.
An outlet frusto-conical portion 125 is formed by the passage 93 at the end 92 of the Venturi section 90, with the frusto-conical portion 125 having a small base 126 and a large base 127, with the large base 127 interrupting the end surface 128 of the Venturi section 90 so as to be disposed closely ad~acent the internal peripheral surface 129 of the inner hose 36, as illustrated.
Another frusto-conical portion 130 is formed by the passage 93 in the Venturi section 90 intermediate the cylindrical portlon 117 thereof and the outlet frusto-conical portion 125, with the frusto-conical portion 130 having a smaller base 131 thereof joining the end 119 o the cylindrical portion 117 and baing substantially of the same diameter therewith, while tha larger base 132 of the frusto-conical portion 130 joins the smaller ~; ~ bese 126 of the end frusto-conical portion 125 and ~ has substantially the same diameter therewi-th.
,~ In the previously described working embodiment ~ ~ - 26 -,~:
.
. -131695~
of the Venturi section 90 of this invention, tha section 90 is formed of aluminum, the length of the cylindrical portion 117 is approximately 1.918 cm (0.755 of an inch) with a diameter o:E approximately 0.572 cm (0.225 of an inch), the length of the inlet frusto~conical portion 120 is approximately 2.438 cm (0.960 of an inch) with the larger base 122 thereof having a diameter of approximately 1.524 cm ~0.600 of an inch) so that the angle being defined by the frusto-conical portion 120 is approximately 22, the intermediate frusto-conical portion 130 has a length of approximately 3.607 cm (1.402 inches) with the laxger base 131 thereof defining a diameter o~ approximately 1.029 cm (0.405 of an inch) so that the same makes an angle of approximately 7, and the outlet frusto-conical .
:portion 125 has a length of approximately 0.902 cm (0.355 of an inch) with the larger base 127 thereof ~ :
: having a diameter of approximately 1.524 cm (0.600 20 : of an inch) so that the same defines an angle of approximately 31.
: It~ was found according to the teachings of : this invention that the aforementionad working ~:~ embodiment of the Venturi section 90 provided for a smooth transition of the flow of fuel from the inlet ~nd 103 of the inner hose 36 through the flow :
passage 93, and by having the two-stage exit frusto-coniaal portions 130 and 125, the initial gradual 7 angle of the first frusto-conical portion 130 seems to pre~ent flow separation beore the fluid expands outwardly into the outlet frusto-conical portion 125 so as to tend to help prevent "movement" of the low pressure location of the pressure drop in the cylindrical portion 117 that performs the sucking function as previously se-t forth. Also, it has been found that the cylindrical portion 117 can have an increased diameter over the diameter of the prior known Venturi seation (0.572 cm versus 0.554 cm) so as to reduce pressure drop therethrough which allows for higher flow rates to the nozzle construction 34 by ~: :
the pump means 32.
Therefore, it can be seen that in the ~: operation of the hose assembly 30 of this ~ ~ invention, whenever an operator dispenses fuel out ; 20 of the nozzle construction 34 into a gasoline tank or the like, the Venturi section 90 will be located : in the lowest portion or drape 35 of the hose assembly 30, and becau~e of the flow of fuel through the flow passage 93 of the Venturi section 90, a vacuum is created in the port means 110 which tends to draw any liquid that ls collected in the i:::
' ~ .
-1 31 6~5q outer passage 41 of the hose assembly 30 in the drape or low area 35 thereof into the fuel flowing through the f}ow passage 93 so as to remove the same from blocking the flow passage 41 which returns the vapors to the pump means 32 in a manner aonventional in the art.
In addition, it can be seen that because the straight portion of the Venturi section 90 is the only part that requires the inner hose 36 to be substantially straight in the low area 35 of the hose assembly 30, the hose assembly 30 can have the drape or low area 35 thereof relatively arcuate in contrast to the nonarauate low portion of the prior known hose assembly arrangement illustrated in FIG.
14.
~:
~; Ther~fore, it can be seen that this invention not only provides a new hose assembly but also this invention provides a new method for making suah a hose assembly.
~ 20 While certain dimensions have been previously ;~ set forth in regards to on~ working embodiment of the~hose assembly 30 of this invention, it is to be understood that the dimensions given are merely for : an example o one working embodiment of this :
invention,: and it~is not to be a limitation on the alaims of this invention.
'~ ~
. .' : :
1316~59 Further, while a certain umbrella type of one-way check valve has been provided for the port means 110 of the Venturi section 90 of this invention, it is to be understood that other structures can be utilized for blocking flow through the port means of the Venturi section when the Venturi section is not providing a sufficient suction.
For example, reference is now made to FIG. 17 wherein another Venturi section of this invention is generally indicated by the reference numeral 90B; it can be seen that the port means llOB
; thereof has a duckbill-type of one-way check valve means 133 disposed therein rather than the umbrella type of cheak valve means 115 previously described.
: Similarly,:i-t can be seen in FIG. 18 that another Venturi~section 9OC of this invention has a : -one-way spring biased ball valve member 134 urgrd against a valve seat 135 by a compression spring 136 to provide for the one-way flow through the :: :: port means llOC.
Instead of a one-way check valve means, the ~:: :: Venturi section can be provided with a slide maans which wil1 open~rnd closr the port mernr thrreof.
For example, reference is now mad~ to FIGS. 19 ~ and 20 whrrein another Venturi section of this ,:
. :,.. ,, . ~ .
:
invention is indioated by the reference numeral 90D
and the same has a port means llOD leading to an internal peripheral surface 136 thereof. A movable tubular member 137 is disposed within the Venturi section 90D and has its external peripheral surface 138D disposed closely adjacent the internal peripher~l surface 136 and is urged to the left in FIG. 19 by a compression spring 139. The member 137 has an internal Venturi-forming portion 140 that is interrupted by a portion means 141' which will align with the port means llOD when the member 136 is moved to the right, as illustrated in FIG.
20, by fluid flowing through the Venturi section 90D from left to right, so that the aligned port means llOD and 141' can provlde the passage for the suction created by the Venturi-forming portion 140 in a manner well known in the art, the valve member 137 aarrying 0-ring seal means 141 on opposite sides of the port 141' thereof so as to seal 20 between the members 90D and 137 when -the port means 141' is aligned with the port means llOD as illustrated in FIG. 20, while one of~the seal means :~ :
; : 141 coaperates with another seal means 142 to seal on opposite sides of the port llOD when the member 137 is disposed in its nonaligned condition : illustrated in FIG. 19.
''' .
:`
1 3 1 6q59 Another such movable member 143 is provided in FIGS. 23-25 and is utilized to open and close the port m~ans llOE of a Venturi section 9OE when the flow of fuel moves the member 143 against the force of a compression spring 144 upon flowing from left to right through the flow passage g3E thereof as illustrated in FIG. 25, the amount of opening of ths member 143 away from the port means llOE being controlled by the amount of fuel flowing through the Venturi passage 93E.
Of course, in any of the Venturi seations of this invention, bypass passages ould be providrd therein to bypass some of the fuel flow through the Venturi section withou-t utilizing that flow or fuel for creating~the suction reguired to empty liquid from the passage of the hose assembly.
For example, the Yenturi section 9OF
.~ :
~ : illustrated in FIG. 21 has: at least one bypass -: :
openlng 145 passing therethrough so that fuel can flow through the passage 145 from left to right in FIG~ 21 without passing through the throat portion :: : : : :
;;117F of~:the flow passage 93F and thereby permits a greater amount of fuel to flow through the Venturi : section 9OF than when the bypass passage 145 is not being utilized.
If:desired, the flow passage 145 could have s 32:-~:
- ~ -1 31 6q59 one-way check valve means disposed therein, such as the one-way check valve means 146 illustrated in FIG. 22.
In any event, it can be seen that various changes can be made in the structure of the Venturi section 90 of this invention with the Venturi section 90 still operating in substantially the same manner as the Venturi section 90 previously set forth~
:
: :: : :
~ :: :: : :
:~
.
, . :
.
Claims (26)
1. In a hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining said first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around said inner hose, said inner peripheral surface of said outer hose and said outer peripheral surface of said inner hose defining said second fluid passage therebetween, said inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of said second fluid passage, said inner hose having adjacent intermediate ends, said Venturi section having opposed ends respectively interconnected to said ends of said inner hose to provide said first fluid passage therewith, the improvement wherein said ends of said inner hose are respectively telescopically disposed on said opposed ends of said Venturi section, said Venturi section having a flow passage therethrough, said flow passage having an intermediate substantially cylindrical portion provided with opposed ends and a substantially circular transverse cross-sectional configuration throughout the length thereof, said Venturi section having a radial passage leading from said second fluid passage to said flow passage at said cylindrical portion thereof and at a point spaced inwardly from said ends thereof, said flow passage having opposed substantially frusto-conical portions at each end thereof with the smaller bases of said frusto-conical portions facing each other, said flow passage having a third frusto conical portion disposed between said cylindrical portion and one of said end frusto-conical portions, said third frusto-conical portion having the smaller base thereof joining said cylindrical portion and having substantially the same diameter therewith, said third frusto-conical portion having the larger base thereof joining the smaller base of said one of said end frusto-conical portions and having substantially the same diameter therewith, said third frusto-conical portion being downstream from said cylindrical portion.
2. A hose assembly as set forth in claim 1 wherein fastening means fasten said ends of said inner hose on said opposed ends of said Venturi section.
3. A hose assembly as set forth in claim 2 wherein said fastening means each comprises a sleeve disposed in telescoping relation on its respective end of said inner hose.
4. A hose assembly as set forth in claim 3 wherein each said sleeve is disposed in radially inwardly compressed relation that holds its respective end of said inner hose in radially inwardly compressed relation on its respective end of said Venturi section.
5. A hose assembly as set forth in claim 4 wherein each end of said Venturi section has annular groove means therein and in which its respective inner hose end is compressed by its respective sleeve.
6. A hose assembly as set forth in claim 5 wherein each end of said Venturi section has an end annular groove, each sleeve having an inwardly directed annular flange received in said end annular groove of its respective Venturi section end.
7. A hose assembly as set forth in claim 1 wherein said radial passage joins said cylindrical portion of said flow passage adjacent said third frusto-conical portion.
8. In a method of making a hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining said first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around said inner hose, said inner peripheral surface of said outer hose and said outer peripheral surface of said inner hose defining said second fluid passage therebetween, said inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of said second fluid passage, said inner hose having adjacent intermediate ends, said Venturi section having opposed ends respectively interconnected to said ends of said inner hose to provide said first fluid passage therewith, the improvement comprising the steps of telescopically disposing said ends of said inner hose respectively on said opposed ends of said Venturi section, forming said Venturi section to have a flow passage therethrough, forming said flow passage to have an intermediate substantially cylindrical portion provided with opposed ends and a substantially circular transverse cross-sectional configuration throughout the length thereof, forming said Venturi section to have a radial passage leading from said second fluid passage to said flow passage at said cylindrical portion thereof and at a point spaced inwardly from said ends thereof, forming said flow passage to have opposed substantially frusto-conical portions at each end thereof with the smaller bases of said frusto-conical portions facing each other, forming said flow passage to have a third frusto-conical portion disposed downstream from said cylindrical portion and between said cylindrical portion and one of said end frusto-conical portions, forming said third frusto-conical portion to have the smaller base thereof joining said cylindrical portion and having substantially the same diameter therewith, and forming said third frusto-conical portion to have the larger base thereof Joining the smaller base of said one of said end frusto-conical portions and having substantially the same diameter therewith.
9. A method of making a hose assembly as set forth in claim 8 and including the step of fastening said ends of said inner hose on said opposed ends of said Venturi section with fastening means.
10. A method of making a hose assembly as set forth in claim 9 and including the step of forming said fastening means to each comprise a sleeve disposed in telescoping relation on its respective end of said inner hose.
11. A method of making a hose assembly as set fourth in claim 10 and including the step of radially inwardly compressing each said sleeve to hold its respective end of said inner hose in radially inwardly compressed relation on its respective end of said Venturi section.
12. A method of making a hose assembly as set forth in claim 11 and including the step of forming each end of said Venturi section to have annular groove means therein and in which its respective inner hose end is compressed by its respective sleeve.
13. A method of making a hose assembly as set forth in claim 12 and including the steps of forming each end of said Venturi section to have an end annular groove, and forming each sleeve to have an inwardly directed annular flange to be received in said end annular groove of its respective Venturi section end.
14. A method of making a hose assembly as sat forth in claim 8 and including the step of forming said radial passage to join said cylindrical portion of said flow passage adjacent said third frusto-conical portion.
15. In a hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining said first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around said inner hose, said inner peripheral surface of said outer hose and said outer peripheral surface of said inner hose defining said second fluid passage therebetween, said inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of said second fluid passage, said inner hose having adjacent intermediate ends, said Venturi section having opposed ends respectively interconnected to said ends of said inner hose to provide said first fluid passage therewith, the improvement wherein said ends of said inner hose are respectively telescopically disposed on said opposed ends of said Venturi section, said Venturi section having a flow passage therethrough, said flow passage having an intermediate portion, said Venturi section having a radial passage leading from said second fluid passage to said intermediate portion of said flow passage, said Venturi section having a movable slide means in said flow passage thereof which is adapted to open said radial passage to said flow passage when the rate of the fluid flow through said flow passage is above a certain rate and to close said radial passage to said flow passage when the rate of the fluid flow through said flow passage is below said certain rate.
16. A hose assembly as set forth in claim 15 wherein fastening means fasten said ends of said inner hose on said opposed ends of said Venturi section.
17. A hose assembly as set forth in claim 16 wherein said fastening means each comprises a sleeve disposed in telescoping relation on its respective end of said inner hose.
18. A hose assembly as set forth in claim 17 wherein each said sleeve is disposed in radially inwardly compressed relation that holds its respective end of said inner hose in radially inwardly compressed relation on its respective end of said Venturi section.
19. A hose assembly as set forth in claim 18 wherein each end of said Venturi section has annular groove means therein and in which its respective inner hose end is compressed by its respective sleeve.
20. A hose assembly as set forth in claim 19 wherein each end of said Venturi section has an end annular groove, each sleeve having an inwardly directed annular flange received in said end annular groove of its respective Venturi section end.
21. In a method of making a hose assembly having a first fluid passage therein for conveying a volatile liquid in one direction to a container and a second fluid passage therein for returning the vapors of the volatile liquid from the container, the assembly comprising a flexible inner hose having an outer peripheral surface and defining said first fluid passage therein, and a flexible outer hose having an inner peripheral surface and being disposed around said inner hose, said inner peripheral surface of said outer hose and said outer peripheral surface of said inner hose defining said second fluid passage therebetween, said inner hose having a substantially straight Venturi section therein that tends to remove liquid from a certain area of said second fluid passage, said inner hose having adjacent intermediate ends, said Venturi section having opposed ends respectively interconnected to said ends of said inner hose to provide said first fluid passage therewith, the improvement comprising the steps of telescopically disposing said ends of said inner hose respectively on said opposed ends of said Venturi section, forming said Venturi section to have a flow passage therethrough, forming said flow passage to have an intermediate portion, forming said Venturi section to have a radial passage leading from said second fluid passage to said flow passage at said intermediate portion thereof, and forming said Venturi section to have a movable slide means in said flow passage thereof which is adapted to open said radial passage to said flow passage when the rate of the fluid flow through said flow passage is above a certain rate and to close said radial passage to said flow passage when the rate of the fluid flow through said flow passage is below said certain rate.
22. A method of making a hose assembly as set forth in claim 21 and including the step of fastening said ends of said inner hose on said opposed ends of said Venturi section with fastening means.
23. A method of making a hose assembly as set forth in claim 22 and including the step of forming said fastening means to each comprise a sleeve disposed in telescoping relation on its respective end of said inner hose.
24. A method of making a hose assembly as set forth in claim 23 and including the step of radially inwardly compressing each said sleeve to hold its respective end of said inner hose in radially inwardly compressed relation on its respective end of said Venturi section.
25. A method of making a hose assembly as set forth in claim 24 and including the step of forming each end of said Venturi section to have annular groove means therein and in which its respective inner hose end is compressed by its respective sleeve.
26. A method of making a hose assembly as set forth in claim 25 and including the steps of forming each end of said Venturi section to have an end annular groove, and forming each sleeve to have an inwardly directed annular flange to be received in said end annular groove of its respective Venturi section end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9864187A | 1987-09-18 | 1987-09-18 | |
| US098,641 | 1993-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1316959C true CA1316959C (en) | 1993-04-27 |
Family
ID=22270264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000577692A Expired - Lifetime CA1316959C (en) | 1987-09-18 | 1988-09-16 | Hose assembly and method of making the same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0412082A1 (en) |
| JP (1) | JP2687002B2 (en) |
| CA (1) | CA1316959C (en) |
| WO (1) | WO1989002411A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2019030C (en) * | 1989-10-13 | 2000-10-31 | John Howard Stanley | Combination hose coupling and suction pump |
| JP2605678Y2 (en) * | 1992-05-04 | 2000-07-31 | 株式会社堀場製作所 | Mounting structure of a removable venturi for sampling in a constant flow gas sampling system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926029A (en) * | 1955-04-14 | 1960-02-23 | Weatherhead Co | Hose coupling having upset locking means |
| US3980112A (en) * | 1975-03-21 | 1976-09-14 | Dayco Corporation | Conduit assembly for conveying volatile fluids |
| IL59439A (en) * | 1980-02-21 | 1983-05-15 | Bron Dan | Two stage jet pump |
| US4570686A (en) * | 1983-06-24 | 1986-02-18 | Gilbarco Inc. | Apparatus for preventing blockage of vapor recovery hose by liquid fuel |
| US4566504A (en) * | 1983-09-15 | 1986-01-28 | Gilbarco Inc. | Insertion tube liquid evacuator system for vapor recovery hose |
| US4687033A (en) | 1984-03-15 | 1987-08-18 | Gilbarco, Inc. | Venturi liquid evacuator system for maintaining clear vapor path in vapor recovery hose |
| CA1276917C (en) * | 1984-03-15 | 1990-11-27 | Roger W. Furrow | Venturi liquid evacuator system for maintaining clear vapor path in vapor recovery hose |
| US4749009A (en) * | 1985-12-02 | 1988-06-07 | Tokheim Corporation | Vapor passage fuel blockage removal |
| US4754782A (en) * | 1986-09-23 | 1988-07-05 | Dayco Products, Inc. | Hose assembly & clip therefor |
| JPH0825598B2 (en) * | 1986-09-29 | 1996-03-13 | デイコ プロダクツ，インコーポレイテッド | Hose assembly and manufacturing method thereof |
-
1988
- 1988-09-14 JP JP63508004A patent/JP2687002B2/en not_active Expired - Lifetime
- 1988-09-14 EP EP88908814A patent/EP0412082A1/en not_active Withdrawn
- 1988-09-14 WO PCT/US1988/003183 patent/WO1989002411A1/en not_active Application Discontinuation
- 1988-09-16 CA CA000577692A patent/CA1316959C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO1989002411A1 (en) | 1989-03-23 |
| EP0412082A1 (en) | 1991-02-13 |
| JPH03500282A (en) | 1991-01-24 |
| JP2687002B2 (en) | 1997-12-08 |
| EP0412082A4 (en) | 1990-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |