CA1107316A - Vacuum cleaner hose assembly and method of making same - Google Patents
Vacuum cleaner hose assembly and method of making sameInfo
- Publication number
- CA1107316A CA1107316A CA332,245A CA332245A CA1107316A CA 1107316 A CA1107316 A CA 1107316A CA 332245 A CA332245 A CA 332245A CA 1107316 A CA1107316 A CA 1107316A
- Authority
- CA
- Canada
- Prior art keywords
- hose
- electrical
- adapter
- fitting
- connectors
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 230000013011 mating Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- BSFODEXXVBBYOC-UHFFFAOYSA-N 8-[4-(dimethylamino)butan-2-ylamino]quinolin-6-ol Chemical compound C1=CN=C2C(NC(CCN(C)C)C)=CC(O)=CC2=C1 BSFODEXXVBBYOC-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000010407 vacuum cleaning Methods 0.000 description 1
Landscapes
- Electric Vacuum Cleaner (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A vacuum cleaner hose assembly and method of making same are provided herein. The assembly comprises an elongated vacuum hose having a hose end, a plurality of electrical conductors extending along the vacuum hose with each conductor having an end portion disposed immediately adjacent the hose end, a plurality of electrical connectors each fixed to an associ-ated end portion of an associated conductor, a flexible hose fitting fixed to the hose end with the fitting having a plurality of the electrical connec-tors embedded therein which are movable with flexing movements of the fitting, a rigid hose adapter operatively connected to the fitting, an electrical device carried by the adapter and connected to the embedded connectors with the device having precisely aligned integral electrical connectors, and cooperating portions on the adapter and electrical device self positioning the electrical device relative to the adapter with the precisely aligned electrical connectors readily accessible for easy mating with cooperating electrical connectors. The positioning means comprise a positioning sur-face on the support structure and coopending surface on the adapter. These surfaces are self-aligning surfaces which self-align upon connecting the adapter and the electrical device to the fitting and the embedded connec-tors. By these means the possibility of damage to the electrical connectors as well as to the fitting and/or associated component requiring scraping of samaged parts and resulting in unnecessary excessive costs is practically obviated.
A vacuum cleaner hose assembly and method of making same are provided herein. The assembly comprises an elongated vacuum hose having a hose end, a plurality of electrical conductors extending along the vacuum hose with each conductor having an end portion disposed immediately adjacent the hose end, a plurality of electrical connectors each fixed to an associ-ated end portion of an associated conductor, a flexible hose fitting fixed to the hose end with the fitting having a plurality of the electrical connec-tors embedded therein which are movable with flexing movements of the fitting, a rigid hose adapter operatively connected to the fitting, an electrical device carried by the adapter and connected to the embedded connectors with the device having precisely aligned integral electrical connectors, and cooperating portions on the adapter and electrical device self positioning the electrical device relative to the adapter with the precisely aligned electrical connectors readily accessible for easy mating with cooperating electrical connectors. The positioning means comprise a positioning sur-face on the support structure and coopending surface on the adapter. These surfaces are self-aligning surfaces which self-align upon connecting the adapter and the electrical device to the fitting and the embedded connec-tors. By these means the possibility of damage to the electrical connectors as well as to the fitting and/or associated component requiring scraping of samaged parts and resulting in unnecessary excessive costs is practically obviated.
Description
7'3~
This invention relates to vacuum cleaner hose assemblies, and methods for making the same.
Flexible vacuum hose assemblies made primarily of polymeric material are widely used particularly on so-called tank or canister type vacuum cleaners. In many applications, each of such hose assemblies is provided with dual purpose wires which serve as reinforcing wires preventing collapse of the vacuum hose and also serving as electrical conductors whereby each hose assembly may be connected to a vacuum tank at one end and provided with an electric power driven cleaning tool at its opposite end.
It is common practice to make hose assemblies of the character mentioned with hose fittings which are usually molded in position around their vacuum hose. Each fitting is often made of a comparatively pliable and flexible polymeric material which has electrical connectors embedded therein and such embedded connectors are fixed to associated dual purpose wires. However, because of the comparative rigidity of the dual purpose wires in each polymeric vacuum hose relative to each flexible hose fitting, electrical connectors fixed to such wires and embedded in an associated hose fitting are usually not preclsely aligned and are movable with flexing of the hose fitting. In many applicatlons where it lS necessary to mate the embedded connectors with precisely alignsd electrical connectors of an associated component being connected to the fitting havlng the embedded connectors therein, such mating is ordinarily very difficult and may~result in damage to the .
electrical connectors as well as to such fitting and/or associated component requiring scrapplng of damaged parts and resultlng in unnecessary excessive costs.
It is an object of one aspect of this invention to provide in a vacuum cleaner hose assembly of the type commonly made for a tank-type vacuum cleaner a hose adapter and electrical device carried thereby which may ~be easily installed on the hose~assembly, a hose fltting having precisely aligned 30~ inletral electtical connsctors which~sre rssdlly~accssslbls~for sa ~ stine with
This invention relates to vacuum cleaner hose assemblies, and methods for making the same.
Flexible vacuum hose assemblies made primarily of polymeric material are widely used particularly on so-called tank or canister type vacuum cleaners. In many applications, each of such hose assemblies is provided with dual purpose wires which serve as reinforcing wires preventing collapse of the vacuum hose and also serving as electrical conductors whereby each hose assembly may be connected to a vacuum tank at one end and provided with an electric power driven cleaning tool at its opposite end.
It is common practice to make hose assemblies of the character mentioned with hose fittings which are usually molded in position around their vacuum hose. Each fitting is often made of a comparatively pliable and flexible polymeric material which has electrical connectors embedded therein and such embedded connectors are fixed to associated dual purpose wires. However, because of the comparative rigidity of the dual purpose wires in each polymeric vacuum hose relative to each flexible hose fitting, electrical connectors fixed to such wires and embedded in an associated hose fitting are usually not preclsely aligned and are movable with flexing of the hose fitting. In many applicatlons where it lS necessary to mate the embedded connectors with precisely alignsd electrical connectors of an associated component being connected to the fitting havlng the embedded connectors therein, such mating is ordinarily very difficult and may~result in damage to the .
electrical connectors as well as to such fitting and/or associated component requiring scrapplng of damaged parts and resultlng in unnecessary excessive costs.
It is an object of one aspect of this invention to provide in a vacuum cleaner hose assembly of the type commonly made for a tank-type vacuum cleaner a hose adapter and electrical device carried thereby which may ~be easily installed on the hose~assembly, a hose fltting having precisely aligned 30~ inletral electtical connsctors which~sre rssdlly~accssslbls~for sa ~ stine with
2 -~
cooperati~g electrical connectors.
An obJect of another aspect of this invention is to provide a vacuum cleaner hose assembly having precisely aligned integral electrical connectors, and cooperating portions on the adapter and electrical device self positioning the electrical device relative to the adapter with the precisely aligned electrical connectors readily accessible for easy mating with cooperating elactrical connectors.
An object of yet another aspect of this invention is to provide a vacuum cleaner hose assembly of the character mentioned in which the elec- ¦
trical device comprises a rigid support structure Made of an electrical insulating material and the cooperating portions are defined by cooperating positioning surfaces on the support structure and on the adapter.
An ob~ect of still another aspect of this invention is to provide a vacuum cleaner hose assembly of the character mentioned in which the pre-cisely aligned electrical COnnectorS of the electrical devices are molded in the support structure.
~ n ob~ect of a further aspect of this invention is to provide an improved method of ma~ing a vacuum cleaner hose assembly of the character mentioned. ~
By one aspect of this invention, an improvement is provided in a vacuum cleaner hose assembly comprising an elong ted vacuum hose having a hose end and a central longitudinal axis, a plurality of electrical con-I
ductors extending along the vacuum hose with each conductor having an endportion disposed immediately adjacent the hose end, a plurality of electri-cal connectors, each fixed to an associated end portlon of an assoclated conductor, and a flexible hose fitting fixed to the hose end and formed substantially as an integral part thereof with the fitting having a plurali-ty of the~electrical connectors embeddeù therein which are movable with ' flexing movements of the fitting, the improvement comprising: a rigid hose ~'7~
adapter operatively connected to the fitting, an electrical device carried by the adapter and connected to the embedded connectors, the device having prPcisely aligned integral electrical connector means, the device compris-ing an elongated vacuum hose having a hose end and a central longitudinal axis, a plurality of electrical conductors extending along the vacuum hose with each conductor having an end portion disposed immediately adjacent the hose end, a plurality of electrical connectors each fi~ed to an associ-ated end portion of an associated conductor, and a flexible hose fitting fixed to the hose end and formed substantially as an integral part thereof with the fitting having a plurality of the electrical connectors embedded therein whic.h are movable with flexing movements of the fitting, the im-provement comprising: a rigid hose adapter operatively connected to the fit-ting; an electrical device carried by the adapter and connected to the em-bedded connectors, the device having precisely aligned integral electrical connector means, the device comprising a rigld support structure made of an lectrical insulating material, and means positioning the electrical device relative to the adapter with the precisely aligned electrical connector means readily accessible for easy mating with cooperating electrical con- ..
nector means, the positioning means comprising a positioning surface on the ~ 20 support structure and a cooperating surface on the adapter, the surfaces :~ being self-aligning surfaces which~self-align upon connecting the adapter and electrical device to the fitting and embedded connectors.
~: : By~a variation thereof, the flexible hose fitting has means for holding an associated hose fitting tXere~o, and further improvement is pro-vided wherein the adapter has the associated hose fitting provided as a part thereof and the adapter has cooperating holding means which engages the holding means, the holdlng means and the cooperating holding means serving ~: I to hoId the:elect:rical device in position.
: :By a further variation, the holding means and the cooperating _ ~ ~
.
holding ~eans comprise a holding shoulder comprLsing a groove in the fitting and a surface comprislng a projection of the adapter, the holding means and the cooperating holding means being the sole means holding the electrical device in position.
By another variant, the surfaces comprise at least parts of co-operating planar portions.
By a further variant, means are provided for fixing the surfaces together.
By another variant, the surfaces comprise an outside, substantial-ly frustopyramidal surface on the support structure defining the positioningsurface, and an inside, substantially frustopyramidal surface on the adapter defining the cooperating surface.
By yet another variant, the surfaces comprise an outside, sub-stantially frustoconical surface on the support surface defining the posi-tioning surface, and an outside, substantiaily frustoconical surface on the adapter defining the cooperating surface.
By a further variant, means are provided disposed between the frustoconical surfaces for preventing relative rotation therebetween.
By another variant, the device further comprises cooperating electrical connectors operaeiYely connected to the embedded connectors, the embedded connectors, the cooperating connectors, and the electrical con-nector means being disposed substantially parallel to the axis.
By yet another variant, each of the frustopyramidal surfaces has spaced parallel edges at its opposite ends which are of rectangular peri-,~
pheral outline.
By a further variant, each of the frustopyramidal surfaces nasspaced parallel edges at its oppos~ite ends which~are of trlangular peripher-al outline. ~
~By yet a further variant, each of the frustoconical surfaces ` ; has spaced parallel edges at~its oppoeite ends which are o circular 17~3~6 ., peripheral outllne.
By still another ~variant, each of the frustoconical surfaces has spaced parallel edges at lts opposite ends which are of roughly elliptical peripheral outline.
By another variant, the embedded connectors comprise female con-nectors and the cooperating connectors com prise male connectors.
By variations thereof, the electrical connector means can com-prise either male connectors or female connectors.
By a further variant, the embedded connectors co~prise male con~
nectors and the coopera~ing connectors comprise female connectors.
By another variant, the flexible hose fitting is a female hose fitting, and the further improvement is provided wherein the rigid hose adapter has a male hose fitting extending therefrom.
By another variant, the flexible hose fitting is a female hose fitting, and the further improvement is provided in which the rigid hose adapter has a female fitting extending therefrom.
By still another variant, the flexible hose fitting is made of a polymeric material, and the further improvement is provided in which the hose adapter is also made of a polymeric material.
; 20 By yet another variant, the electrical conductors comprlse dual purpose conductors and reinforcing members for the hose assembly.
;~ By another aspect of this invention, an improvement is provided in a method of making a vacuum cleaner hose assembly comprising the steps of fabricating an elongated vacuum hose having a hose end and a central longitudinal axie, disposing a plurality of elect~rical conductors along the vacuum hose with each conductor having an end portion disposed immedi-ately adiacent the hose end, fixing a plurality of electrical connectors to the conductors~ with each connector being fixed to an associated end por- 1 -tion of an associated conductor, and molding a~flexible hose fitting~to the hose end~substantially as an integral part thereof, with ths fitting having 4 b ~
:
cooperati~g electrical connectors.
An obJect of another aspect of this invention is to provide a vacuum cleaner hose assembly having precisely aligned integral electrical connectors, and cooperating portions on the adapter and electrical device self positioning the electrical device relative to the adapter with the precisely aligned electrical connectors readily accessible for easy mating with cooperating elactrical connectors.
An object of yet another aspect of this invention is to provide a vacuum cleaner hose assembly of the character mentioned in which the elec- ¦
trical device comprises a rigid support structure Made of an electrical insulating material and the cooperating portions are defined by cooperating positioning surfaces on the support structure and on the adapter.
An ob~ect of still another aspect of this invention is to provide a vacuum cleaner hose assembly of the character mentioned in which the pre-cisely aligned electrical COnnectorS of the electrical devices are molded in the support structure.
~ n ob~ect of a further aspect of this invention is to provide an improved method of ma~ing a vacuum cleaner hose assembly of the character mentioned. ~
By one aspect of this invention, an improvement is provided in a vacuum cleaner hose assembly comprising an elong ted vacuum hose having a hose end and a central longitudinal axis, a plurality of electrical con-I
ductors extending along the vacuum hose with each conductor having an endportion disposed immediately adjacent the hose end, a plurality of electri-cal connectors, each fixed to an associated end portlon of an assoclated conductor, and a flexible hose fitting fixed to the hose end and formed substantially as an integral part thereof with the fitting having a plurali-ty of the~electrical connectors embeddeù therein which are movable with ' flexing movements of the fitting, the improvement comprising: a rigid hose ~'7~
adapter operatively connected to the fitting, an electrical device carried by the adapter and connected to the embedded connectors, the device having prPcisely aligned integral electrical connector means, the device compris-ing an elongated vacuum hose having a hose end and a central longitudinal axis, a plurality of electrical conductors extending along the vacuum hose with each conductor having an end portion disposed immediately adjacent the hose end, a plurality of electrical connectors each fi~ed to an associ-ated end portion of an associated conductor, and a flexible hose fitting fixed to the hose end and formed substantially as an integral part thereof with the fitting having a plurality of the electrical connectors embedded therein whic.h are movable with flexing movements of the fitting, the im-provement comprising: a rigid hose adapter operatively connected to the fit-ting; an electrical device carried by the adapter and connected to the em-bedded connectors, the device having precisely aligned integral electrical connector means, the device comprising a rigld support structure made of an lectrical insulating material, and means positioning the electrical device relative to the adapter with the precisely aligned electrical connector means readily accessible for easy mating with cooperating electrical con- ..
nector means, the positioning means comprising a positioning surface on the ~ 20 support structure and a cooperating surface on the adapter, the surfaces :~ being self-aligning surfaces which~self-align upon connecting the adapter and electrical device to the fitting and embedded connectors.
~: : By~a variation thereof, the flexible hose fitting has means for holding an associated hose fitting tXere~o, and further improvement is pro-vided wherein the adapter has the associated hose fitting provided as a part thereof and the adapter has cooperating holding means which engages the holding means, the holdlng means and the cooperating holding means serving ~: I to hoId the:elect:rical device in position.
: :By a further variation, the holding means and the cooperating _ ~ ~
.
holding ~eans comprise a holding shoulder comprLsing a groove in the fitting and a surface comprislng a projection of the adapter, the holding means and the cooperating holding means being the sole means holding the electrical device in position.
By another variant, the surfaces comprise at least parts of co-operating planar portions.
By a further variant, means are provided for fixing the surfaces together.
By another variant, the surfaces comprise an outside, substantial-ly frustopyramidal surface on the support structure defining the positioningsurface, and an inside, substantially frustopyramidal surface on the adapter defining the cooperating surface.
By yet another variant, the surfaces comprise an outside, sub-stantially frustoconical surface on the support surface defining the posi-tioning surface, and an outside, substantiaily frustoconical surface on the adapter defining the cooperating surface.
By a further variant, means are provided disposed between the frustoconical surfaces for preventing relative rotation therebetween.
By another variant, the device further comprises cooperating electrical connectors operaeiYely connected to the embedded connectors, the embedded connectors, the cooperating connectors, and the electrical con-nector means being disposed substantially parallel to the axis.
By yet another variant, each of the frustopyramidal surfaces has spaced parallel edges at its opposite ends which are of rectangular peri-,~
pheral outline.
By a further variant, each of the frustopyramidal surfaces nasspaced parallel edges at its oppos~ite ends which~are of trlangular peripher-al outline. ~
~By yet a further variant, each of the frustoconical surfaces ` ; has spaced parallel edges at~its oppoeite ends which are o circular 17~3~6 ., peripheral outllne.
By still another ~variant, each of the frustoconical surfaces has spaced parallel edges at lts opposite ends which are of roughly elliptical peripheral outline.
By another variant, the embedded connectors comprise female con-nectors and the cooperating connectors com prise male connectors.
By variations thereof, the electrical connector means can com-prise either male connectors or female connectors.
By a further variant, the embedded connectors co~prise male con~
nectors and the coopera~ing connectors comprise female connectors.
By another variant, the flexible hose fitting is a female hose fitting, and the further improvement is provided wherein the rigid hose adapter has a male hose fitting extending therefrom.
By another variant, the flexible hose fitting is a female hose fitting, and the further improvement is provided in which the rigid hose adapter has a female fitting extending therefrom.
By still another variant, the flexible hose fitting is made of a polymeric material, and the further improvement is provided in which the hose adapter is also made of a polymeric material.
; 20 By yet another variant, the electrical conductors comprlse dual purpose conductors and reinforcing members for the hose assembly.
;~ By another aspect of this invention, an improvement is provided in a method of making a vacuum cleaner hose assembly comprising the steps of fabricating an elongated vacuum hose having a hose end and a central longitudinal axie, disposing a plurality of elect~rical conductors along the vacuum hose with each conductor having an end portion disposed immedi-ately adiacent the hose end, fixing a plurality of electrical connectors to the conductors~ with each connector being fixed to an associated end por- 1 -tion of an associated conductor, and molding a~flexible hose fitting~to the hose end~substantially as an integral part thereof, with ths fitting having 4 b ~
:
3~'6 a plurality of the electrical connectors embedded therein which are movable with flexing movement of the fltting, the improvement comprising the further method steps which enable the assembly to be used in applications requlring precisely positioned electrical connector means, the further meth od steps comprising: forming a rigid hose adapter, constructing an electrical device which has cooperating electrical connectors and precisely aligned integral electrical connector means, providing the electrical device and the adapter with cooperating selE-positioning means, and operatively connecting the adapter to the fitting thereby to connect the cooperating connectors to the embedded connectors and to cause the cooperating self-positioning means to align the electrical connector means for easy accessibility and mating with the cooperating electrical connector means.
By a variant thereof, the constructing step comprises the step of constructing the electrical device of a rigid support structure made of an electrical insulating material; and the providing step comprises provid-ing the electrical device and the adapter with cooperating positioning sur-faces which define the self-positioning means.
By a variation thereof, the method includes the step of providing the cooperating positioning surfaces as cooperating frustopyramidal surfaces.
By another variation, the method includes the step of providing the cooperating positioning surfaces as cooperating frustoconical surfaces.
.
By a further variation, the method includes the step of providing cooperating holding means on the fitting and on the adapter which serve as ~; the sole means holding the electrical device in position.
The accompanying drawings show present preferred embodiments of this invention, in which:
FIO. l is an exploded perspective view of one end portion of a ; vacuum cleaner hose assembly of one aspect`of this invention particularly ¦ -illustrating a vacuum hose having a flexible hose fitting fixed thereto, an : ~ !
~ 7~J~
electrical device having precisely aligned integral electrical connectors, and a rigid hose adapter which is adapted to be connected to the hose fit-ting and carries the electrical device;
FIG. 2 is a fragmentary perspective view particularly illustrating the electrical device and hose fitting of FIG. 1 in assembled relation;
FIG. 3 is a fragmentary perspective view illustrating all three components of FIG. 1 in assembled relation;
FIG. 4 is a fragmentary view illustrating the electrical device and hose adapter of FIG. 1 in assemhled relation with the adapter in cross section and the electrical device in elevation and also illustrating the hose fitting and its associated end portion of the vac-~um hose in cross section ;
FIG. 5 is a view of the assembled components of FIG. 3 showing the vacuum hose fitting and hose adapter in cross section and the .
~ ~ .
:~ ~ :
.
~: . .
, ., ~; ; ,.
~ ~ 4 3~
electrical device in elevation;
FIG. 6 is a view taken essentially on the line 6-6 of FIG. ~
FIG. 7 is a perspective view illustrating another exemplary embodiment of an electrical device in another aspect of this invention which has precisely aligned female electrical connector means instead of the male connector means illustrated in the electrical device of FIGS. 1-6;
FIG. 8 is a cross~sectional 'view similar to the top half portion of FIG. 4 illustrating another embodiment of a hose assembly of another aspect of this invention with the device of FIG. 7 installed in position in its rigid hose adapter;
FIG. 9 is a view similar to the top half portion of FIG. 5 with the device of FIG. 7 in position;
FIG. 10 is an exploded perspective view similar to FIG. 1 with portions broken away illustrating another embodiment of a hose assembly of an aspect of this invention which uses another embodiment of an electrical device of this invention employed with a modified hose fitting;
FIG. 11 is a view similar to FIG. 8 illustrating the electrical device of FIG. 10 installed within a rigid adapter and illustrating the adapter partially assembled in its hose fitting;
FIG. 12 is a view similar to FIG. 11 illustrating the com~
ponents of FIG. 11 completely assembled;
FIG. 13 is a view similar ~o FIG. 7 illustrating another exemplary embodiment of an electrical device of in a hose assembly of an aspect of this invention which has female electrical connectors provided at both of its opposite ends;
FIG. 14 is a view similar to FIG. 12 illustrating another embodiment~of;a hose assembly of an aspect of this invention with the electrical device of FIG. 13 installed in position;
~30 ~:
:`: : ~ :
: 5 ~
;: : :
73~L6 FIG. 15 iB a view similar to FIG. 1 lllustrating another exemplary embodiment of a vacuum cleaner hose assemhly of another aspect of this invention;
FIG. 16 is a view similar to FIG. 3 of the assembled vacuum cleaner hose assembly of FIG. 15;
FIG. 17 is a view similar to FIG. 6 looking perpendicularly toward the assembled electrical device and hose adapter of FIG. 15 with the device and adapter detached from their associated hose fitting;
FIG. 18 is a perspective view of another exemplary embodiment of a hose adapter and integral electrical device assembled therewithin in a hose assembly of an aspect of this invention wherein such hose adapter has a female hose fitting extending therefrom;
FIG. 19 illustrates another exemplary embodiment of an electrical device which may be used in associated hose assemblies of still other aspects of this invention in lieu of previously illustrated electrical devices; and FIG. 20 illustrates still another exemplary embodiment of an electrical device which may be used in associated hose assemblies : .of yet further aspects of this invention in lieu of previously illustrated ~20 electrical devices. .
~ 6 -3~
Reference is now made to FIG. 1 of the drawings which is an ex-ploded perspective view of components comprising one end portion of an ex-emplary embodiment of a vacuum cleaner hose assembly of an aspect of this invention which is designated general:Ly by the reference numeral 30. The opposite end portion of such hose assembly 30 is identical to the end portion illustrated in FIG. 1 and thus wi~l not be shown and/or described. The vacuum cleaner hose assembly 30 is of the type employed in a vacuum cleaner apparatus which has a canister or tanlc and uhich may have a suitable vacuum tube or the like extending therefrom ~md which is particularly adapted to have the illustrated end portion of the hose assembly 30 connected thereto.
The vacuum cleaner hose assembly 30 comprises an elongated vacuum hose 3] having a hose end as illustrated and a central longitudinal axis A, FIG. 4. The vacuum hose 31 has a plurality of two dual-purpose wires 32 and 33 which serve as reinforcing wires which assure that the vacuum hose 31 may be flexed during normal operations without collapse thereof and the wires 32 and 33 also serve as electrical conductors. Each wire 32 and 33 has an electrical insulating sleeve designated by the refer-ence numeral 34 disposed therearound. The hose assembly 30 has its electri-cal conductor-reinforcing wires 32 and 33 exeending in a helical pattern - along and in supporting relation witl-in the hose 31 and in particular such wires are disposed in supporting relation against the inside surface of the polymeric tube portion 35 of the vacuum hose 31.
; ~ The vacuum cleaner hose assembly 30 has a flexible hose fitting 36 fixed to the illustrated end 37 of hose 31 and such hose fitting may be defined using any suitable technique -~ .
~: : :
:
73~
known in the art. Preferably such fitting is defined by molding such fit-ting in position around end portion 37 of the vacuum hose 31 and esse~tially as disclosed in U.S. Pat ent No. 3,928,715, for example. Furth~er, the reference eO the hose fitting 36 being flexible is intended to define that such hose fitting is not rigid and may be compressed and belt yet the hose fitting is made of a resilient polymeric material, e.g., a synthetic plastic material which enables such fitting to return essentially to its original unbelt or unflexed condition.
In a similàr manner as disclosed in the above-mentioned patent, the hose fitting 36 of the assembly 30 has a plurality of electrical con-nectors each designated by the same reference numeral 40 suitably embedded therein (with the polymeric material of the fitting 36 serving as a matrix therefor) and each connector 40 of FIGS. 1 through 6 is shown as a female connector and is fixed to an associated end portion of an associated conduc-tor or wire, either 32 and 33. For simplicity and ease of description and presentation, each end portion of each dual-purpose wire 32 and 33 is designated by the reference numeral 41 and the electrical connector is fixed to its end portion employing a knife edge portion 42 thereof to provide a firm high-performance mechanical and electrical connection therebetween.
With the hose fitting 36 being made of flexible yet resilient polymeric material, ~as described above, the embedded electrical connectors 40 are also movable with any flexing or other movement of the matrix portion of the fitting surrounding each connector and it will be appreciated that in applications where it is necessary to connect the fittings 40 with pre-cisely positioned and comparatively rigidly placed electrical connectors, ~;~ it is difficult and in may instances .
' :
impossible to achieve a satisfactory electrical connection.
The'vacuum cleaner hose assembly 30 has a rigid hose adapter 44 which is operatively connected to the hose fitting 36 and held in position by cooperating holding means in the adapter 44 and fitting 36 and such holding means is designated generally by the reference n~lmeral 43 (FIGS. 3 and 5) and such holding means will:be described in detail later. The hose assembly 30 a],so has an electrical device 45 which is carried by the adapter 44 and is connected to the electrical connectors 40 embedded in the hose fitting 36 and the device 45 has precisely aligned integral electrical con-nector means shown as a pair of male connectors 46. The rigid adapter 44and electrical device 45 have cooperating means or portions designated generally by the reference numeral 47 which serve to self position the electrical device 45 relative to the adapter 44 with the precisely aligned electrical connectors 46 readily accessible as shown at 48 in FIGS. 3 and 6 for easy mating with cooperating electrical connector means.
The electrical device 45 comprises a rigid support structure 50 which is made of any suitable rigid electrical insulating material and it will be seen that the device 45 has cooperating electrical connectors in the form of male connectors 51 which are particularly adapted to be connec-ted with the embedded female electrical connectors 40 of fitting 36.
As previously mentionedl the vacuum cleaner hose assembly 30has cooperatin~ means or portions 47 for self positioning the electrical ; device 45 relative to the adapter 44. The positioning means comprises a positioning surface 53 on the support structure 50 and a cooperating posi-tioning surface 54 on the adapter ~. The- adapter 4g has an up,wardly pro-' jecting :: : :
:
,.
:
:: : ~: :
73~
portion 55 which is defined as an integral part of the overall adapter 44 whereby the adapter 44 with its portion 55 is defined as a single-piece structure and the portion 55 has an overhanging U-shaped portion 56 for protecting the precisely aligned electrical connector means or male connec-tors 46 of the device 45 and a similar oppositely arranged U-shaped portion 57 disposed diametrically opposite:portion 56 with portion 57 being re-ceived around a roughly U-shaped cutout 60 in the upper portion o~ the hose fitting 36.
Referring now to FIGS. 1 and 4 of the drawings, it is seen that the positioning surface 53 comprises an outside substantially frustopyra-midal surface and the positioning surface 54 is a cooperating inside sub-stantially frustopyramidal surface~ The surfaces 53 and 54 comprise co-operating planar portions and such surfaces self align upon operatively con-necting the adapter 44 to the flexible hose fitting 36. As the adapter 44 is connected to fitting 36 the cooperating male connectors 51 of the device 45 are connected to the embedded female connectors 40 and this is achieved simply by urging adapter 44 within the hose fitting 36 by urging tubular portion 61 of such adapter within the flexible hose fitting 36. The urging of adapter 44 is achieved by applying forces along the axis A whereby the cooperating frustopyramidal surfaces 53 and 54, in essence, self position.
In many instances the embedded connectors 40 may be inaccurately ~ positioned within their supporting polymeric matrix material; however, in : : accordance with aspects of this invention as the adapter 44 is moved in : position the connectors 51 provide a satisfactory electrical connection with connectors 40 and the precisely aligned electrical male connectors 46 re-main rigidly held by their rigid support structure 50 and in their pre-cisely :
~ - 10- ~
aligned positions. Further, with the adapter 44 in posltion the connectors 46 are readily accessible for easy mating with cooperating electrical connec-tors of any associated hose fitting which is to be connected with the adapter 44.
As seen in FIGS. 1 and 4 of the drawings, the frustopyramidal sur-face 53 has spaced parallel edges 62 and 63 at its opposite ends each of substantially rectangular peripheral outline; and, the edges 62 and 63 are adjoined by substantially planar surfaces 65 and 66 respectively with the surfaces 65 and 66 being disposed in parallel relationO Similarly, the frustopyramidal surface 54 has spaced parallel edges 67 and 68 at its oppo-site ends each also of substantially rectangular peripheral outline.
The flexible hose fitting 36 as integral holding means 70 pro-vided as an integral part thereof for holding an associated hose fitting or component thereto and such means 70 comprises a groove 71 in fitting 36 which has an annular planar surface 72 defining same. The rigid adapter 44 also has integral holding means 73 provided as an integral part thereof for holding such adapter to an associated fitting such as fitting 36. The integral holding means 73 comprises a projection 74 on the portion 61 o~
adapter 44 and projection 74 has an annular planar surface 75. The holding means 70 and 73 define the previously described cooperating holding means 43.
The cooperating~holding means 43 of the assembly 30 is brought into use by disposing tubular portion 61 of the rigid hose adapter 44 within the hose fitting 36 with projecting portion 74 installed within co-~; operating groove 71 of the hose fittin8 36. As mentioned earlier3 the fit-ting 36 is made of flexible and yieldable poly~erlc material so that it slightly expands radially .
- ~73~ Ei outwardly of groove 71 to recelve projection 73 within groove 71. As the projection 73 moves in position almular surface 75 thereof snap locks in position against annular surface 72 which serves as a holding-locking shoulder thereby holding the adapter 44 within the hose fitting 36. During this action the cooperatlng frustopyramidal surfaces 53 a~d 54 self align as described earlier. The proJection 74 of holding means 73 may be of any suitable type and in this example of the invention, such locking projection extends around approximately 270 of the circumferential outline of the tubular portion 61 of the adapter 44 whereby projection 74 is absent over an approximately 90 arc at the top portion of adapter 44 with such 90 arc being symmetrically arranged with respect to ~ dimetrical plane bisecting the adapter 44 and the upwardly extending projecting portion 55 ~hereof.
It will also be seen that the adapter 44 has a tubular male ex-tension or portion 77 extending therefrom and such tubular portion is particularly adapted to be received within an associated cooperating structure such as a previously mentioned vacuum tube of a cannister or tank type vacuum cleaning apparatus or the like.
As indicated earlier, the substantially frustoconical surfaces 53 and 54 are self-aligning surfaces which serve to selE align the precisely positioned male electrical connectors 46 of electrical device 45 for easy access as described earlier upon connecting the adapter 44 and electrical device 45 to the hose fitting 36 with its embedded electrical connectors 40. It is not necessary in accordance with aspects of this invention to bond or otherwise fix the electrical device 45 to the rigid adapter 44.
However, it will be appreciated that in some applications of aspects of this invention it may be desired to fix or attach device ' -: ::
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45 in position. This fixing ac.ion rnay be provided ernploying adhesive means which may be in the form of separate adhesive material. It will be appreci-ated that any suitable adhesive material known in the art may be used for this purpose.
Other exemplary embodiments of the vacuum cleaner hose assembly of other aspects of this invention are illustrated in ~IGS. 8-9, 10-12, 14, and 15-17 of the drawings. The vacuum cleaner hose assemblies illustrated in FIGS. 8-9, 10-12, 14, and 15-17 are similar to the assembly 30; there-fore, such assemblies will be designated by the reference numerals 30A, 30B, 10 30C and 30D respectively and component parts of each assembly which are similar to corresponding parts of the assembly 30 will be designated in the drawings by the same reference numerals as in the assembly 30 (whether or not such component parts are mentioned in the specification) followed by the,associated letter designation either A, B, C or D, and not described again in detail. Only those component parts of each assembly which are substantially different from corresponding parts of the hose construction 30 will be designated by a new reference numeral also followed by the associa-ted letter designation and descrlbed in detail.
The hose assembly 30A of FIGS. 8-9 has an elongated vacuum hose 31A provided with wires 32A-33A, a flexible hose fitting 36A provided with embedded female connectors 40A, a rigid adapter 44A, and an electrical de-vice 45A which is shown in perspective view in FIG. 7. The device 45A has a frustopyramidal surface 53A and the adapter 44A has a cooperating frusto-pyramidal surface 54A with the surfaces 53A and 54A defining the cooperat-ing self positioning means. The electrlcal device 45A also has a rigid support structure 50A and cooperating male connectors 51A which are connec-ted within ehe embedded connectors 40A.
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73~L6 The maln difference between the hose assembly 30A and the hose assembly 30 is that the electrical device 45A has electrical connector means in the form of female electrical connectors 82A (instead of male connectors) which are readily accessible for easy mating with cooperating electrical connector means and in a slmilar manner as previously described.
The hose assembly 30B of FIGS. 10~12 has an elongated vacuum hose 31B provided with wires 32B-33B, a flexible hose fitting 36B provided with embedded electrical connectors, to be subsequently described, a rigid adapter 44B, and an electrical device 45:B which is shown in perspective view in FIG. 10. The device 45B has a frustopyramidal surface 53B and the adapter 44B has a cooperating frustopyramidal surface 54B with the surfaces 53B and 54B deEining cooperating self positioning means. The electrical device 45B also has a rigid support structure 50B and precisely aligned electrical connector means in the form of male connectors 46B which are similar to the connectors 46B of electrical device 45 of the hose assembly 30.
The main differences between the assembly 30B and the assembly 30 are that the flexible hose fitting 36B, instead of having a pair of female electrical connectors embedded therein, has a pair of male connectors 83B extending therefrom and the electrical device 45B has female electrical connector means 84B iD the form of a pair of female electrical connectors 84B which are particularly adapted to receive male electrical connectors 83B upon operatively connecting the rigid hose adapter 44B within the flexible fitting 3SB.
The hose assembly 30C of FIG. 14 has an elongated vacuum hose : : ~
31C provided with wires 32C-33C, a flexible~hose fitting 36C provided with embedded electrical connectors to be ~: ~ `; ' ~ 14 ~
subsequently descrlbed, a rlgld adapter 44C, and an electrlcal devlce 45C
which is shown in perspective view :Ln FIG. 13. The electrical device b5C
has a frustopyramldal surface 53C and the adapter 44C has a cooperatlng frustopyramidal surface 54C with the surfaces 53C and 54C defining cooperat-ing self-positioning means as prevlously described. The electrical de~lce 45C also has a rigid support structure 50C and precisely aligned electrical connector means.
The main difference between the hose assembly 30C and the hose assembly 30 are that the electrlcal device 45C has female electrlcal con-nectors ln the form of a pair of female electrical connectors 85C whlch areparticularly adapted to receive male electrlcal connectors 86C having base portions embedded ln the flexible fitting 36C. In addition, the electrlcal devlce 45C also has electrical connector means in the form of female elec-trical connectors 87C (instead of male connectors) and the female connec-tors 87C are readily accessible for easy mating with cooperating electrical connector means and in a slmilar manner as prevlously described. As indl-cated above, the flexlble hose fitting 36C instead of having a female electrical connectors therein, has a pair of embedded electrical connectors which have male connectors 86C. The connectors 86C are received within the electrical connectors 85C upon operatively connecting the rigid hose adapter 44C to the flexible fitting 36C.
The hose assembly 30D of FIGS. 15-17 has an elongated vacuum hose 31D provided with wires 32D-33D, a flexible hose fitting 36D provided with embedded female connectors 40D, a rigid adapter 44D, and an electrical device 45D which is shown in exploded perspective view in FIG. 15. T~e device 45D has a frustoconical surface 90D and the adapter 44D has a co-:
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frustoconical surface 91D with the surfaces 90D-9lD defining cooperatlng self-positi.oning means or self-positioning portions or surfaces and in a similar manner as previously described for similar surfaces 53 and 5~l of the hose assembly 30.
The hose assembly 30D also has antirotation means designated generally by the reference numeral 92D which prevents relative rotation be-tween surfaces 90D-9lD. The antirotation means is disposed between the frustoconical surfaces 90D-91D and such means is disposed between the frustoconical surfaces 90D-9.D and such means may comprise cooperating key-ways 93D and 94D in the components 45D and 44D respectively and a key 95D
disposed between the cooperating keyways 93D-94D.
The hose assembly 30D has antirotation means 92D because rotation is possible between the frustoconical surfaces 90D and 91D. However, each of the hose assemblies 30, 30A, 30B, and 30 C employs associated electrical devices which have frustopyramidal surfaces and ~he associated rigid adap-ters also have cooperating frustopyramidal surfaces whereby a self position-ing action is possible yet without rotation between the cooperating frusto-pyramidal surfaces.
Each of the vacuum hose assembl:ies 30, 30A, 30B and 30C employs respective electrical devices 45, 45A, 45B, and 45C with each of these electrical devices having frustopyramidal surfaces and each frustopyramidal surface has spaced .parallel edges at its opposite ends of rectangular per-ipheral outline. Each rigid adapter associated with each of these electri-cal devices has si.milar cooperating frustopyramldal surfaces. However, i.t will be appreciated that each eIectrical device instead of having a frusto-pyramidal surface with spaced parallel edges of rectangular peripheral out-line may have a f:rustopyramidal surface 53E with spaced parallel edges of ~: triangular outline aod a typical device ~ . ':
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.
73~6 of this type is illustrated in FIG. l9 and designated by the reference numeral ~5~. The devicè 45E may be provided with male connectors 51E to be received within associated female connectors embedded in an associated hose fitting and similarly the electrical device 45E may be provided with precisely positioned male electrical connectors 46E which are precisely aligned.
The vacuum hose assembly 30D employs an electrical device 45D
having a frustoconical surface and the frustoconical surface has spaced parallel edges at its opposite ends of circular peripheral outline. The rigid adapter associated with device 45D has a similar cooperating frusto-conical surface. However, it will be appreciated that the electrical de-vice 45D instead of having a frustoconical surface with sp~ced parallel -dges of circul~r peripheral outline may have a frustoconical surface 90F
with spaced parallel edges of noncircular or elliptical outline and a typi-cal device of this type is illustrated in FIG. 20 and designated by the reference numeral 45F. The device 45F may be provided with male connectors 51F to be received within associated female connectors embedded in an associated hose fitting and simllarly the electrical device 45F may be pro-vided with precisely positioned male electrical connectors 46F which are precisely aligned.
The rigid adapter 44 of the assembly 30 has a tubular extension 77 extending therefrom which is in the form of a male tubular extension.
However, it will be appreciated that the adapter of this invention need not necessarily be made in this manner. For example, the rigid adapter 44G of FIG. 18 has a tubular extension 61G which is to be received within an associated fitting, an electrical device 45G, and a fem~le connector ~ 97G at the end opposite from the tubular projection 61G.
::
~731~ 1 The members 44 and 44A-D are shown of similar co~struction for ease of presentation; however, it will be appreciated that these members may be suitably modifled to meet electrical safety codes.
In this disclosure the various components are cross-hatched in the drawings as made of synthe~ic plastic material; however, such components may be made of any suitable electrical insulating polymeric material, e.g., rubber for example.
It will also be appreciated that the rigid support structure of each electrical device may be any suitable electrical insulating materia:L.
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::::: :
:
By a variant thereof, the constructing step comprises the step of constructing the electrical device of a rigid support structure made of an electrical insulating material; and the providing step comprises provid-ing the electrical device and the adapter with cooperating positioning sur-faces which define the self-positioning means.
By a variation thereof, the method includes the step of providing the cooperating positioning surfaces as cooperating frustopyramidal surfaces.
By another variation, the method includes the step of providing the cooperating positioning surfaces as cooperating frustoconical surfaces.
.
By a further variation, the method includes the step of providing cooperating holding means on the fitting and on the adapter which serve as ~; the sole means holding the electrical device in position.
The accompanying drawings show present preferred embodiments of this invention, in which:
FIO. l is an exploded perspective view of one end portion of a ; vacuum cleaner hose assembly of one aspect`of this invention particularly ¦ -illustrating a vacuum hose having a flexible hose fitting fixed thereto, an : ~ !
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electrical device having precisely aligned integral electrical connectors, and a rigid hose adapter which is adapted to be connected to the hose fit-ting and carries the electrical device;
FIG. 2 is a fragmentary perspective view particularly illustrating the electrical device and hose fitting of FIG. 1 in assembled relation;
FIG. 3 is a fragmentary perspective view illustrating all three components of FIG. 1 in assembled relation;
FIG. 4 is a fragmentary view illustrating the electrical device and hose adapter of FIG. 1 in assemhled relation with the adapter in cross section and the electrical device in elevation and also illustrating the hose fitting and its associated end portion of the vac-~um hose in cross section ;
FIG. 5 is a view of the assembled components of FIG. 3 showing the vacuum hose fitting and hose adapter in cross section and the .
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electrical device in elevation;
FIG. 6 is a view taken essentially on the line 6-6 of FIG. ~
FIG. 7 is a perspective view illustrating another exemplary embodiment of an electrical device in another aspect of this invention which has precisely aligned female electrical connector means instead of the male connector means illustrated in the electrical device of FIGS. 1-6;
FIG. 8 is a cross~sectional 'view similar to the top half portion of FIG. 4 illustrating another embodiment of a hose assembly of another aspect of this invention with the device of FIG. 7 installed in position in its rigid hose adapter;
FIG. 9 is a view similar to the top half portion of FIG. 5 with the device of FIG. 7 in position;
FIG. 10 is an exploded perspective view similar to FIG. 1 with portions broken away illustrating another embodiment of a hose assembly of an aspect of this invention which uses another embodiment of an electrical device of this invention employed with a modified hose fitting;
FIG. 11 is a view similar to FIG. 8 illustrating the electrical device of FIG. 10 installed within a rigid adapter and illustrating the adapter partially assembled in its hose fitting;
FIG. 12 is a view similar to FIG. 11 illustrating the com~
ponents of FIG. 11 completely assembled;
FIG. 13 is a view similar ~o FIG. 7 illustrating another exemplary embodiment of an electrical device of in a hose assembly of an aspect of this invention which has female electrical connectors provided at both of its opposite ends;
FIG. 14 is a view similar to FIG. 12 illustrating another embodiment~of;a hose assembly of an aspect of this invention with the electrical device of FIG. 13 installed in position;
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73~L6 FIG. 15 iB a view similar to FIG. 1 lllustrating another exemplary embodiment of a vacuum cleaner hose assemhly of another aspect of this invention;
FIG. 16 is a view similar to FIG. 3 of the assembled vacuum cleaner hose assembly of FIG. 15;
FIG. 17 is a view similar to FIG. 6 looking perpendicularly toward the assembled electrical device and hose adapter of FIG. 15 with the device and adapter detached from their associated hose fitting;
FIG. 18 is a perspective view of another exemplary embodiment of a hose adapter and integral electrical device assembled therewithin in a hose assembly of an aspect of this invention wherein such hose adapter has a female hose fitting extending therefrom;
FIG. 19 illustrates another exemplary embodiment of an electrical device which may be used in associated hose assemblies of still other aspects of this invention in lieu of previously illustrated electrical devices; and FIG. 20 illustrates still another exemplary embodiment of an electrical device which may be used in associated hose assemblies : .of yet further aspects of this invention in lieu of previously illustrated ~20 electrical devices. .
~ 6 -3~
Reference is now made to FIG. 1 of the drawings which is an ex-ploded perspective view of components comprising one end portion of an ex-emplary embodiment of a vacuum cleaner hose assembly of an aspect of this invention which is designated general:Ly by the reference numeral 30. The opposite end portion of such hose assembly 30 is identical to the end portion illustrated in FIG. 1 and thus wi~l not be shown and/or described. The vacuum cleaner hose assembly 30 is of the type employed in a vacuum cleaner apparatus which has a canister or tanlc and uhich may have a suitable vacuum tube or the like extending therefrom ~md which is particularly adapted to have the illustrated end portion of the hose assembly 30 connected thereto.
The vacuum cleaner hose assembly 30 comprises an elongated vacuum hose 3] having a hose end as illustrated and a central longitudinal axis A, FIG. 4. The vacuum hose 31 has a plurality of two dual-purpose wires 32 and 33 which serve as reinforcing wires which assure that the vacuum hose 31 may be flexed during normal operations without collapse thereof and the wires 32 and 33 also serve as electrical conductors. Each wire 32 and 33 has an electrical insulating sleeve designated by the refer-ence numeral 34 disposed therearound. The hose assembly 30 has its electri-cal conductor-reinforcing wires 32 and 33 exeending in a helical pattern - along and in supporting relation witl-in the hose 31 and in particular such wires are disposed in supporting relation against the inside surface of the polymeric tube portion 35 of the vacuum hose 31.
; ~ The vacuum cleaner hose assembly 30 has a flexible hose fitting 36 fixed to the illustrated end 37 of hose 31 and such hose fitting may be defined using any suitable technique -~ .
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73~
known in the art. Preferably such fitting is defined by molding such fit-ting in position around end portion 37 of the vacuum hose 31 and esse~tially as disclosed in U.S. Pat ent No. 3,928,715, for example. Furth~er, the reference eO the hose fitting 36 being flexible is intended to define that such hose fitting is not rigid and may be compressed and belt yet the hose fitting is made of a resilient polymeric material, e.g., a synthetic plastic material which enables such fitting to return essentially to its original unbelt or unflexed condition.
In a similàr manner as disclosed in the above-mentioned patent, the hose fitting 36 of the assembly 30 has a plurality of electrical con-nectors each designated by the same reference numeral 40 suitably embedded therein (with the polymeric material of the fitting 36 serving as a matrix therefor) and each connector 40 of FIGS. 1 through 6 is shown as a female connector and is fixed to an associated end portion of an associated conduc-tor or wire, either 32 and 33. For simplicity and ease of description and presentation, each end portion of each dual-purpose wire 32 and 33 is designated by the reference numeral 41 and the electrical connector is fixed to its end portion employing a knife edge portion 42 thereof to provide a firm high-performance mechanical and electrical connection therebetween.
With the hose fitting 36 being made of flexible yet resilient polymeric material, ~as described above, the embedded electrical connectors 40 are also movable with any flexing or other movement of the matrix portion of the fitting surrounding each connector and it will be appreciated that in applications where it is necessary to connect the fittings 40 with pre-cisely positioned and comparatively rigidly placed electrical connectors, ~;~ it is difficult and in may instances .
' :
impossible to achieve a satisfactory electrical connection.
The'vacuum cleaner hose assembly 30 has a rigid hose adapter 44 which is operatively connected to the hose fitting 36 and held in position by cooperating holding means in the adapter 44 and fitting 36 and such holding means is designated generally by the reference n~lmeral 43 (FIGS. 3 and 5) and such holding means will:be described in detail later. The hose assembly 30 a],so has an electrical device 45 which is carried by the adapter 44 and is connected to the electrical connectors 40 embedded in the hose fitting 36 and the device 45 has precisely aligned integral electrical con-nector means shown as a pair of male connectors 46. The rigid adapter 44and electrical device 45 have cooperating means or portions designated generally by the reference numeral 47 which serve to self position the electrical device 45 relative to the adapter 44 with the precisely aligned electrical connectors 46 readily accessible as shown at 48 in FIGS. 3 and 6 for easy mating with cooperating electrical connector means.
The electrical device 45 comprises a rigid support structure 50 which is made of any suitable rigid electrical insulating material and it will be seen that the device 45 has cooperating electrical connectors in the form of male connectors 51 which are particularly adapted to be connec-ted with the embedded female electrical connectors 40 of fitting 36.
As previously mentionedl the vacuum cleaner hose assembly 30has cooperatin~ means or portions 47 for self positioning the electrical ; device 45 relative to the adapter 44. The positioning means comprises a positioning surface 53 on the support structure 50 and a cooperating posi-tioning surface 54 on the adapter ~. The- adapter 4g has an up,wardly pro-' jecting :: : :
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portion 55 which is defined as an integral part of the overall adapter 44 whereby the adapter 44 with its portion 55 is defined as a single-piece structure and the portion 55 has an overhanging U-shaped portion 56 for protecting the precisely aligned electrical connector means or male connec-tors 46 of the device 45 and a similar oppositely arranged U-shaped portion 57 disposed diametrically opposite:portion 56 with portion 57 being re-ceived around a roughly U-shaped cutout 60 in the upper portion o~ the hose fitting 36.
Referring now to FIGS. 1 and 4 of the drawings, it is seen that the positioning surface 53 comprises an outside substantially frustopyra-midal surface and the positioning surface 54 is a cooperating inside sub-stantially frustopyramidal surface~ The surfaces 53 and 54 comprise co-operating planar portions and such surfaces self align upon operatively con-necting the adapter 44 to the flexible hose fitting 36. As the adapter 44 is connected to fitting 36 the cooperating male connectors 51 of the device 45 are connected to the embedded female connectors 40 and this is achieved simply by urging adapter 44 within the hose fitting 36 by urging tubular portion 61 of such adapter within the flexible hose fitting 36. The urging of adapter 44 is achieved by applying forces along the axis A whereby the cooperating frustopyramidal surfaces 53 and 54, in essence, self position.
In many instances the embedded connectors 40 may be inaccurately ~ positioned within their supporting polymeric matrix material; however, in : : accordance with aspects of this invention as the adapter 44 is moved in : position the connectors 51 provide a satisfactory electrical connection with connectors 40 and the precisely aligned electrical male connectors 46 re-main rigidly held by their rigid support structure 50 and in their pre-cisely :
~ - 10- ~
aligned positions. Further, with the adapter 44 in posltion the connectors 46 are readily accessible for easy mating with cooperating electrical connec-tors of any associated hose fitting which is to be connected with the adapter 44.
As seen in FIGS. 1 and 4 of the drawings, the frustopyramidal sur-face 53 has spaced parallel edges 62 and 63 at its opposite ends each of substantially rectangular peripheral outline; and, the edges 62 and 63 are adjoined by substantially planar surfaces 65 and 66 respectively with the surfaces 65 and 66 being disposed in parallel relationO Similarly, the frustopyramidal surface 54 has spaced parallel edges 67 and 68 at its oppo-site ends each also of substantially rectangular peripheral outline.
The flexible hose fitting 36 as integral holding means 70 pro-vided as an integral part thereof for holding an associated hose fitting or component thereto and such means 70 comprises a groove 71 in fitting 36 which has an annular planar surface 72 defining same. The rigid adapter 44 also has integral holding means 73 provided as an integral part thereof for holding such adapter to an associated fitting such as fitting 36. The integral holding means 73 comprises a projection 74 on the portion 61 o~
adapter 44 and projection 74 has an annular planar surface 75. The holding means 70 and 73 define the previously described cooperating holding means 43.
The cooperating~holding means 43 of the assembly 30 is brought into use by disposing tubular portion 61 of the rigid hose adapter 44 within the hose fitting 36 with projecting portion 74 installed within co-~; operating groove 71 of the hose fittin8 36. As mentioned earlier3 the fit-ting 36 is made of flexible and yieldable poly~erlc material so that it slightly expands radially .
- ~73~ Ei outwardly of groove 71 to recelve projection 73 within groove 71. As the projection 73 moves in position almular surface 75 thereof snap locks in position against annular surface 72 which serves as a holding-locking shoulder thereby holding the adapter 44 within the hose fitting 36. During this action the cooperatlng frustopyramidal surfaces 53 a~d 54 self align as described earlier. The proJection 74 of holding means 73 may be of any suitable type and in this example of the invention, such locking projection extends around approximately 270 of the circumferential outline of the tubular portion 61 of the adapter 44 whereby projection 74 is absent over an approximately 90 arc at the top portion of adapter 44 with such 90 arc being symmetrically arranged with respect to ~ dimetrical plane bisecting the adapter 44 and the upwardly extending projecting portion 55 ~hereof.
It will also be seen that the adapter 44 has a tubular male ex-tension or portion 77 extending therefrom and such tubular portion is particularly adapted to be received within an associated cooperating structure such as a previously mentioned vacuum tube of a cannister or tank type vacuum cleaning apparatus or the like.
As indicated earlier, the substantially frustoconical surfaces 53 and 54 are self-aligning surfaces which serve to selE align the precisely positioned male electrical connectors 46 of electrical device 45 for easy access as described earlier upon connecting the adapter 44 and electrical device 45 to the hose fitting 36 with its embedded electrical connectors 40. It is not necessary in accordance with aspects of this invention to bond or otherwise fix the electrical device 45 to the rigid adapter 44.
However, it will be appreciated that in some applications of aspects of this invention it may be desired to fix or attach device ' -: ::
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73~
45 in position. This fixing ac.ion rnay be provided ernploying adhesive means which may be in the form of separate adhesive material. It will be appreci-ated that any suitable adhesive material known in the art may be used for this purpose.
Other exemplary embodiments of the vacuum cleaner hose assembly of other aspects of this invention are illustrated in ~IGS. 8-9, 10-12, 14, and 15-17 of the drawings. The vacuum cleaner hose assemblies illustrated in FIGS. 8-9, 10-12, 14, and 15-17 are similar to the assembly 30; there-fore, such assemblies will be designated by the reference numerals 30A, 30B, 10 30C and 30D respectively and component parts of each assembly which are similar to corresponding parts of the assembly 30 will be designated in the drawings by the same reference numerals as in the assembly 30 (whether or not such component parts are mentioned in the specification) followed by the,associated letter designation either A, B, C or D, and not described again in detail. Only those component parts of each assembly which are substantially different from corresponding parts of the hose construction 30 will be designated by a new reference numeral also followed by the associa-ted letter designation and descrlbed in detail.
The hose assembly 30A of FIGS. 8-9 has an elongated vacuum hose 31A provided with wires 32A-33A, a flexible hose fitting 36A provided with embedded female connectors 40A, a rigid adapter 44A, and an electrical de-vice 45A which is shown in perspective view in FIG. 7. The device 45A has a frustopyramidal surface 53A and the adapter 44A has a cooperating frusto-pyramidal surface 54A with the surfaces 53A and 54A defining the cooperat-ing self positioning means. The electrlcal device 45A also has a rigid support structure 50A and cooperating male connectors 51A which are connec-ted within ehe embedded connectors 40A.
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73~L6 The maln difference between the hose assembly 30A and the hose assembly 30 is that the electrical device 45A has electrical connector means in the form of female electrical connectors 82A (instead of male connectors) which are readily accessible for easy mating with cooperating electrical connector means and in a slmilar manner as previously described.
The hose assembly 30B of FIGS. 10~12 has an elongated vacuum hose 31B provided with wires 32B-33B, a flexible hose fitting 36B provided with embedded electrical connectors, to be subsequently described, a rigid adapter 44B, and an electrical device 45:B which is shown in perspective view in FIG. 10. The device 45B has a frustopyramidal surface 53B and the adapter 44B has a cooperating frustopyramidal surface 54B with the surfaces 53B and 54B deEining cooperating self positioning means. The electrical device 45B also has a rigid support structure 50B and precisely aligned electrical connector means in the form of male connectors 46B which are similar to the connectors 46B of electrical device 45 of the hose assembly 30.
The main differences between the assembly 30B and the assembly 30 are that the flexible hose fitting 36B, instead of having a pair of female electrical connectors embedded therein, has a pair of male connectors 83B extending therefrom and the electrical device 45B has female electrical connector means 84B iD the form of a pair of female electrical connectors 84B which are particularly adapted to receive male electrical connectors 83B upon operatively connecting the rigid hose adapter 44B within the flexible fitting 3SB.
The hose assembly 30C of FIG. 14 has an elongated vacuum hose : : ~
31C provided with wires 32C-33C, a flexible~hose fitting 36C provided with embedded electrical connectors to be ~: ~ `; ' ~ 14 ~
subsequently descrlbed, a rlgld adapter 44C, and an electrlcal devlce 45C
which is shown in perspective view :Ln FIG. 13. The electrical device b5C
has a frustopyramldal surface 53C and the adapter 44C has a cooperatlng frustopyramidal surface 54C with the surfaces 53C and 54C defining cooperat-ing self-positioning means as prevlously described. The electrical de~lce 45C also has a rigid support structure 50C and precisely aligned electrical connector means.
The main difference between the hose assembly 30C and the hose assembly 30 are that the electrlcal device 45C has female electrlcal con-nectors ln the form of a pair of female electrical connectors 85C whlch areparticularly adapted to receive male electrlcal connectors 86C having base portions embedded ln the flexible fitting 36C. In addition, the electrlcal devlce 45C also has electrical connector means in the form of female elec-trical connectors 87C (instead of male connectors) and the female connec-tors 87C are readily accessible for easy mating with cooperating electrical connector means and in a slmilar manner as prevlously described. As indl-cated above, the flexlble hose fitting 36C instead of having a female electrical connectors therein, has a pair of embedded electrical connectors which have male connectors 86C. The connectors 86C are received within the electrical connectors 85C upon operatively connecting the rigid hose adapter 44C to the flexible fitting 36C.
The hose assembly 30D of FIGS. 15-17 has an elongated vacuum hose 31D provided with wires 32D-33D, a flexible hose fitting 36D provided with embedded female connectors 40D, a rigid adapter 44D, and an electrical device 45D which is shown in exploded perspective view in FIG. 15. T~e device 45D has a frustoconical surface 90D and the adapter 44D has a co-:
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frustoconical surface 91D with the surfaces 90D-9lD defining cooperatlng self-positi.oning means or self-positioning portions or surfaces and in a similar manner as previously described for similar surfaces 53 and 5~l of the hose assembly 30.
The hose assembly 30D also has antirotation means designated generally by the reference numeral 92D which prevents relative rotation be-tween surfaces 90D-9lD. The antirotation means is disposed between the frustoconical surfaces 90D-91D and such means is disposed between the frustoconical surfaces 90D-9.D and such means may comprise cooperating key-ways 93D and 94D in the components 45D and 44D respectively and a key 95D
disposed between the cooperating keyways 93D-94D.
The hose assembly 30D has antirotation means 92D because rotation is possible between the frustoconical surfaces 90D and 91D. However, each of the hose assemblies 30, 30A, 30B, and 30 C employs associated electrical devices which have frustopyramidal surfaces and ~he associated rigid adap-ters also have cooperating frustopyramidal surfaces whereby a self position-ing action is possible yet without rotation between the cooperating frusto-pyramidal surfaces.
Each of the vacuum hose assembl:ies 30, 30A, 30B and 30C employs respective electrical devices 45, 45A, 45B, and 45C with each of these electrical devices having frustopyramidal surfaces and each frustopyramidal surface has spaced .parallel edges at its opposite ends of rectangular per-ipheral outline. Each rigid adapter associated with each of these electri-cal devices has si.milar cooperating frustopyramldal surfaces. However, i.t will be appreciated that each eIectrical device instead of having a frusto-pyramidal surface with spaced parallel edges of rectangular peripheral out-line may have a f:rustopyramidal surface 53E with spaced parallel edges of ~: triangular outline aod a typical device ~ . ':
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.
73~6 of this type is illustrated in FIG. l9 and designated by the reference numeral ~5~. The devicè 45E may be provided with male connectors 51E to be received within associated female connectors embedded in an associated hose fitting and similarly the electrical device 45E may be provided with precisely positioned male electrical connectors 46E which are precisely aligned.
The vacuum hose assembly 30D employs an electrical device 45D
having a frustoconical surface and the frustoconical surface has spaced parallel edges at its opposite ends of circular peripheral outline. The rigid adapter associated with device 45D has a similar cooperating frusto-conical surface. However, it will be appreciated that the electrical de-vice 45D instead of having a frustoconical surface with sp~ced parallel -dges of circul~r peripheral outline may have a frustoconical surface 90F
with spaced parallel edges of noncircular or elliptical outline and a typi-cal device of this type is illustrated in FIG. 20 and designated by the reference numeral 45F. The device 45F may be provided with male connectors 51F to be received within associated female connectors embedded in an associated hose fitting and simllarly the electrical device 45F may be pro-vided with precisely positioned male electrical connectors 46F which are precisely aligned.
The rigid adapter 44 of the assembly 30 has a tubular extension 77 extending therefrom which is in the form of a male tubular extension.
However, it will be appreciated that the adapter of this invention need not necessarily be made in this manner. For example, the rigid adapter 44G of FIG. 18 has a tubular extension 61G which is to be received within an associated fitting, an electrical device 45G, and a fem~le connector ~ 97G at the end opposite from the tubular projection 61G.
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~731~ 1 The members 44 and 44A-D are shown of similar co~struction for ease of presentation; however, it will be appreciated that these members may be suitably modifled to meet electrical safety codes.
In this disclosure the various components are cross-hatched in the drawings as made of synthe~ic plastic material; however, such components may be made of any suitable electrical insulating polymeric material, e.g., rubber for example.
It will also be appreciated that the rigid support structure of each electrical device may be any suitable electrical insulating materia:L.
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Claims (28)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a vacuum cleaner hose assembly comprising an elongated vacuum hose having a hose end and a central longitudinal axis, a plurality of electrical conductors extending along said vacuum hose with each conduc-tor having an end portion disposed immediately adjacent said hose end, a plurality of electrical connectors each fixed to an associated end portion of an associated conductor, and a flexible hose fitting fixed to said hose end and formed substantially as an integral part thereof with said fitting having a plurality of said electrical connectors embedded therein which are movable with flexing movements of said fitting, the improvement comprising:
a rigid hose adapter operatively connected to said fitting, an electrical device carried by said adapter and connected to said embedded connectors, said device having precisely aligned integral electrical connector means, said device comprising a rigid support structure made of an electrical in-sulating material, and means positioning the electrical device relative to said adapter with said precisely aligned electrical connector means readily accessible for easy mating with cooperating electrical connector means, said positioning means comprising a positioning surface on said support structure and a cooperating surface on said adapter, said surfaces being self-aligning surfaces which self-align upon connecting said adapter and electrical de-vice to said fitting and embedded connectors.
a rigid hose adapter operatively connected to said fitting, an electrical device carried by said adapter and connected to said embedded connectors, said device having precisely aligned integral electrical connector means, said device comprising a rigid support structure made of an electrical in-sulating material, and means positioning the electrical device relative to said adapter with said precisely aligned electrical connector means readily accessible for easy mating with cooperating electrical connector means, said positioning means comprising a positioning surface on said support structure and a cooperating surface on said adapter, said surfaces being self-aligning surfaces which self-align upon connecting said adapter and electrical de-vice to said fitting and embedded connectors.
Z. In a vacuum hose cleaner assembly as set forth in claim 1 wherein said flexible hose fitting has means for holding an associated hose fitting thereto, the further improvement wherein: said adapter has said associated hose fitting provided as a part thereof, and wherein said adapter has cooperating holding means which engages said holding means, said hold ing means and cooperating holding means serving to hold said electrical de-vice in position.
3. In a vacuum cleaner hose assembly as set forth in claim 2 the further improvement wherein: said holding means and said cooperating holding means comprise a holding shoulder comprising a groove in said fit-ting and a surface comprising a projection of said adapter; said holding means and said cooperating holding means being the sole means holding said electrical device in position.
4. In a vacuum cleaner hose assembly as set forth in claim 1 the further improvement in which: said surfaces comprise at least parts of cooperating planar portions.
5. In a vacuum cleaner hose assembly as set forth in claim 1 the further improvement comprising: means fixing said surfaces together.
6. In a vacuum cleaner hose assembly as set forth in claim 1 the further improvement in which: said surfaces comprise an outside, sub-stantially frustopyramidal surface on said support structure defining said positioning surface, and an inside, substantially frustopyramidal surface on said adapter defining said cooperating surface.
7. In a vacuum cleaner hose assembly as set forth in claim 1 the further improvement in which: said surfaces comprise an outside, substantial-ly frustoconical surface on said support structure defining said position-ing surface, and an inside, substantially frustoconical surface on said adapter defining said cooperating surface.
8. In a vacuum cleaner hose assembly as set forth in claim 7 the further improvement comprising: means disposed between said frustoconical surfaces preventing relative rotation therebetween.
9. In a vacuum cleaner hose assembly as set forth in claim 2 the further improvement in which: said device further comprises cooperating electrical connectors operatively connected to said embedded connectors, said embedded connectors, said cooperating connectors, and said electrical connector means being disposed substantially parallel to said axis.
10. In a vacuum cleaner hose assembly as set forth in claim 6 the further improvement in which: each of said frustopyramidal surfaces has spaced parallel edges at its opposite ends of rectangular peripheral outline.
11. In a vacuum cleaner hose assembly as set forth in claim 6 the further improvement in which: each of said frustopyramidal surfaces has spaced parallel edges at its opposite ends of triangular peripheral outline.
12. In a vacuum cleaner hose assembly as set forth in claim 7 the further improvement in which: each of said frustoconical surfaces has spaced parallel edges at its opposite ends of circular peripheral outline.
13. In a vacuum cleaner hose assembly as set forth in claim 7 the further improvement in which: each of said frustoconical surfaces has spaced parallel edges at its opposite ends of roughly elliptical peripheral outline.
14. In a vacuum cleaner hose assembly as set forth in claim 9 the further improvement in which: said embedded connectors comprise female con-nectors; and in which: said cooperating connectors comprise male connectors.
15. In a vacuum cleaner hose assembly as set forth in claim 14 the further improvement in which: said electrical connector means comprises male connectors.
16. In a vacuum cleaner hose assembly as set forth in claim 14 the further improvement in which: said electrical connector means comprises female connectors.
17. In a vacuum cleaner hose assembly as set forth in claim 9 the further improvement in which: said embedded connectors comprise male connec-tors, and in which said cooperating connectors comprise female connectors.
18. In a vacuum cleaner hose assembly as set forth in claim 17 the further improvement in which: said electrical connector means comprise male connectors.
19. In a vacuum cleaner hose assembly as set forth in claim 17 the further improvement in which: said electrical connector means comprise female connectors.
20. In a vacuum cleaner hose assembly as set forth in claim 1 wherein said flexible hose fitting is a female hose fitting, the further improvement wherein: said rigid hose adapter has a male hose fitting extend-ing therefrom.
21. In a vacuum cleaner hose assembly as set forth in claim 1 wherein said flexible hose fitting is a female hose fitting, the further improvement in which: said rigid hose adapter has a female fitting extending therefrom.
22. In a vacuum cleaner hose assembly as set forth in claim 1 wherein said flexible hose fitting is made of a polymeric material, the further improvement in which: said hose adapter is also made of a polymeric material.
23. In a vacuum cleaner hose assembly as set forth in claim 1 the further improvement in which: said electrical conductors comprise dual pur-pose conductors and reinforcing members for said hose assembly.
24. In a method of making a vacuum cleaner hose assembly compris-ing the steps of fabricating an elongated vacuum hose having a hose end and a central longitudinal axis, disposing a plurality of electrical con-ductors along said vacuum hose with each conductor having an end portion disposed immediately adjacent said hose end, fixing a plurality of electri-cal connectors to said conductors, with each electrical connector being fixed to an associated end portion of an associated conductor, and molding a flexible hose fitting to said hose end substantially as an integral part thereof with said fitting having a plurality of said electrical connectors embedded therein which are movable with flexing movement of said fitting, the improvement comprising the further methods steps which enable said assembly to be used in applications requiring precisely positioned electri-cal connector means, said further method steps comprising: forming a rigid hose adapter; constructing an electrical device which has cooperating electrical connectors and precisely aligned integral electrical connector means; providing said electrical device and said adapter with cooperating self-positioning means; and operatively connecting said adapter to said fitting, thereby to connect said cooperating connectors to said embedded connectors and to cause said cooperating self-positioning means to align said electrical connector means for easy accessibility and mating with co-operating electrical connector means.
25. In a method of making a vacuum cleaner hose assembly as set forth in claim 24 the further improvement in which said constructing step comprises the step of: constructing said electrical device of a rigid sup-port structure made of an electrical insulating material; and wherein said providing step comprises: providing said electrical device and said adapter with cooperating positioning surfaces which define said self-positioning means.
26. In a method of making a vacuum cleaner hose assembly as set forth in claim 25 the further improvement in which said providing step comprises: providing said cooperating positioning surfaces as cooperating frustopyramidal surfaces.
27. In a method of making a vacuum cleaner hose assembly as set forth in claim 25 the further improvement in which said providing step com-prises: providing said cooperating positioning surfaces as cooperating frustoconical surfaces.
28. In a method of making a vacuum cleaner hose assembly as set forth in claim 25 the further improvement comprising the step of: providing cooperating holding means on said fitting and on said adapter which serve as the sole means holding said electrical device in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,245A CA1107316A (en) | 1979-07-20 | 1979-07-20 | Vacuum cleaner hose assembly and method of making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,245A CA1107316A (en) | 1979-07-20 | 1979-07-20 | Vacuum cleaner hose assembly and method of making same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1107316A true CA1107316A (en) | 1981-08-18 |
Family
ID=4114742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA332,245A Expired CA1107316A (en) | 1979-07-20 | 1979-07-20 | Vacuum cleaner hose assembly and method of making same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1107316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916642A (en) * | 2017-11-17 | 2018-04-17 | 泉州市英伦环保科技有限公司 | Ground dust collecting system |
-
1979
- 1979-07-20 CA CA332,245A patent/CA1107316A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916642A (en) * | 2017-11-17 | 2018-04-17 | 泉州市英伦环保科技有限公司 | Ground dust collecting system |
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