US3784047A - Safety closure cap - Google Patents

Safety closure cap Download PDF

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Publication number
US3784047A
US3784047A US00250241A US3784047DA US3784047A US 3784047 A US3784047 A US 3784047A US 00250241 A US00250241 A US 00250241A US 3784047D A US3784047D A US 3784047DA US 3784047 A US3784047 A US 3784047A
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Prior art keywords
cap
spout
opposite
latching
lugs
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Expired - Lifetime
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US00250241A
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English (en)
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A Cooper
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/04—Tank inlets
    • B60K15/0406—Filler caps for fuel tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/32—Radiator cap

Definitions

  • PATENTEU JAN 8 4 SHEEI 2 0F 2 SAFETY CLOSURE CAP This invention relates to a safety-closure cap for bayonet connection with a spout, and more particularly to such type of cap wherein means is provided to insure that the cap is evenly seated on the top of the spout before it can be turned to close or seal the same.
  • a common type of closure cap for filling spouts on automobile gasoline tanks is adapted for bayonet connection with such filling spout.
  • the filling spout comprises a top and diametrically opposite female notches adjacent the top through which latching lugs on the cap are insertable to provide a bayonet type connection upon turning of the cap over the top of the spout.
  • Opposite cam surfaces are provided on the spout, each of which extends from and slopes downwardly from adjacent the end of a notch and terminates adjacent a downwardly extending stop.
  • a spring pressed sealing disc is provided in the cap and upon twisting or turning (provided the latching lugs are inserted properly through the notches) the cap becomes securely and fully seated with the sealing disc tightly engaged in sealing contact with the top of the spout.
  • Gasoline station attendants are sometimes careless in applying the closure cap to the spout after the tank has been filled with gasoline. Instead of insuring that both of the latching lugs are properly inserted into the female bayonet notches, only one latching lug is so inserted and the other opposite latching lug merely rests or engages the top of the spout. Latching is thus effected by only one lug and the cap is seated with a tilt.
  • the closure cap is not fully or evenly seated on the top of the spout so that when the cap is twisted to latch the same, an open space obtains at the upwardly tilted side of the cap which allows vapor and gasoline to escape grossly from the spout, especially when the vehicle is accelerating, thus creating a dangerous situation.
  • the invention has as its objects, among others, the provision of economical and simple means on a bayonet type connection, closure cap, which will insure that the cap is fully seated on a spout before it can be latched, to thus prevent escape of contents from the spout, which would otherwise occur if the cap is not sealed to the top of the spout.
  • FIG. 1 is an exploded perspective view of a common type of closure cap and filling spout of an automobile gasoline tank;
  • FIG. 2 is a vertical section through the cap of FIG. 1;
  • FIG. 3 is a sectional elevation illustrating the cap of FIG. 1 in phantom lines seated properly on the top of the spout;
  • FIG. 4 is a vertical sectional elevation looking in the direction of arrow 4 in FIG. 1, with the cap fully seated after having been twisted from the position shown in FIG. 3;
  • FIG. 5 is a horizontal sectional elevation, looking upwardly in the direction of arrow 5 in FIG. 7, of the top portion of the filling spout and the cap, illustrating the improper situation where only one latching lug has been properly inserted through an associated notch in the spout with the diametrically opposite latching lug resting on the top of the spout;
  • FIG. 6 is a view similar to FIG. 5, but illustrating the cap turned 90 from the position shown in FIG. 5, wherein it should normally be latched fully but is not so latched;
  • FIG. 7 is a fragmentary sectional elevation illustrating the tilted position of the cap when it is not properly latched because of the situation shown in FIG. 6, portions of the view being shown broken away for clarity;
  • FIG. 8 is a view similar to FIG. 1, but illustrating how the conventional cap of FIG. 1 is provided with blocking prongs extending downwardly from the latching lugs to accomplish the purposes of this invention;
  • FIG. 9 is a view similar to FIG. 5 illustrating how the blocking prongs of this invention prevent closing or latching of the cap unless it is properly seated on the top of the spout;
  • FIG. 10 is a sectional elevation illustrating how blocking by one of the blocking prongs shown in FIG. 9 is effected;
  • FIG. 11 is a vertical section of another embodiment of the instant invention wherein the closure cap is adapted for an external type bayonet connection;
  • FIG. 12 illustrates in vertical section a type of external connection on a filling spout, the cap being shown seated in phantom lines and;
  • FIG. 13 is a perspective view of the underside of the closure cap illustrating a modification wherein the blocking prongs are ends of an integral fin.
  • FIGS. 1 through 7 for purposes of explanation of the invention, a conventional filling spout and a conventional type of closure cap for the gasoline tank of an automobile are illustrated.
  • These parts which are adapted for a bayonet type connection, comprise an upwardly extending tubular filling spout 2, having a top comprising rim 3, and horizontal flange 4 extending inwardly and substantially even with rim 3.
  • Diametrically opposite notches 5 and 6, which provide for a bayonet connection, are formed in flange 4 which has a downtumed flange 7 on each side of the spout extending between notches 5 and6.
  • cam surface 8 which extends from an edge of notch 5, slopes gradually downwardly and terminates adjacent a downwardly extending stop 9 at opposite notch 6.
  • cam surface 11 and stop 12 are formed in the opposite flange 7, with cam surface 11 opposite cam surface 8 and stop 12 opposite stop 9.
  • the conventional cap for cooperation with the described spout comprises a flat top 16 having diametrically opposite upright lugs 17 for grasping to turn the cap on the spout, and a downwardly extending cylindrical flange 18 which fits over the spout.
  • a centering hub 19 is secured to the underside of cap top 16; and a spring pressed sealing disc 21 is fixedly secured between the cap andthe centering hub 19.
  • Centering hub 19 has opposite outwardly extending latching lugs 22 and 23 stamped integral therefrom. Except for the outwardly projecting lugs 22 and 23, hub 19 is cylindrical and is adapted to fit between the aforementioned downwardly extending flanges 7.
  • FIG. 3 illustrates in phantom lines proper initial positioning of the cap wherein both latching lugs 22 and 23 are properly inserted through the bayonet notches 5 and 6, respectively, whereby after the cap is twisted 90, a tight seal can be effected against the top of the spout.
  • notches 5 and 6 of the aforesaid conventional cap are relatively wide compared to the width of the single pair of opposed latching lugs 22 and 23 located only at substantially the same level. They and spring pressed sealing disc 21 providean initial loose fit to thus enable quick attachment of the cap without exact fitting thereof on the spout. Also cam surfaces 8 and 11 are relatively shallow. As a result of this loose fit, as can be seen from FIGS. 5, 6 and 7, it will be noted that it is possible for a person to inadvertently tilt the cap as shown in FIG.
  • the foregoing described construction is a typical bayonet connection between a spout and a cap, and is the type of construction in which the improvement of this invention is made to overcome the foregoing problem.
  • such improvement comprises a pair of depending blocking prongs 26 and 27 integrally connected with the respective latching lugs 22 and 23, and which are substantially perpendicular to top 16 of the cap.
  • these prongs are integrally soldered or welded to the underside of latching lugs 22 and 23 but may be otherwise formed integrally with or otherwise fastened to or immediately adjacent the latching lugs.
  • Each of the blocking prongs is sufficiently long so that when a person in positioning the cap over the spout to close the same has only one lug 22 properly inserted through a notch 5, as shown in FIG. 9, the other lug 23 and associated blocking prong 27 must be properly inserted completely through the opposite notch 6 before the cap can be twisted closed. Otherwise blocking prong 27 associated with lug 23 will engage against a side edge 28 of notch 6, as is shown in FIGS. 9 and 10, which will preclude twisting of the cap either partially or fully to an apparently latched or sealed position.
  • the blocking prongs preclude latching of the cap when it is seated at an angle, as shown in FIG. 10, thus permitting latching only when the cap is fully seated on the top of the spout.
  • the blocking prongs are desirably wider at their upper edges than the depth of the notches 5 and 6.
  • the two blocking prongs can be formed as end parts of an integral fin 29 extending transversely and downwardly from the latching lugs, as shown in FIG. 13.
  • the spout is about 2-% inches outside diameter with horizontal flange 4 about one-fourth of an inch wide, the depth of cam flanges 7 at the highest point about threesixteenths of an inch, notches 5 and 6 about fiveeighths of an inch wide, stops 9 and 12 each about fiveeighths of an inch wide and three-eighths of an inch long, and the lower edge of centering hub 19 about flve-eighths of an inch below the top surface of the cap.
  • a suitable length for each of blocking prongs 26 and 27 beyond the lower edge of centering hub 19 is about three-fourths of an inch. This will insure that the cap must be properly and evenly seated on the top of the filling spout before it can be twisted to fully latched position.
  • the length of the blocking prongs may vary depending upon the size of the spout and the particular dimensions of the cap. It is only necessary that they be at least sufi'iciently long as can be readily determined, to insure that the cap cannot be latched by only one latching lug when it is inadvertently positioned at an angle with only one latching lug engaging a cam surface.
  • an internal type bayonet connection is illustrated which is common for closure caps on automobile gasoline tanks; and the blocking prongs 26 and 27 are spaced inwardly of cylindrical cap flange 18 for entry through internal bayonet notches in the spout.
  • the principle of the invention is also applicable to an external type bayonet connection, as is illustrated in FIGS. 1 1 and 12, wherein, for example, a radiator tank filling spout 31 is shown.
  • the cap 32 therefor has inwardly extending diametrically opposite latching lugs 33 which are adapted to latch the cap by the camming action described above, by riding over external cams 34 on the radiator spout which has opposite external notches 36 through which latching lugs 33 are insertable.
  • Blocking prongs 37 are shown as rigidly connected to cylindrical cap flange 35, and depend downwardly from below latching lugs 33 to insure that the cap is fully and evenly seated on the rim of the spout with sealing disc 38 in engagement with the spout before the cap can be twisted closed, as is indicated by the phantom lines in FIG. 12.
  • the blocking prongs may be formed integrally with or fastened directly to latching lugs 33.
  • a safety closure cap for bayonet connection with a filler spout of an automobile tank or the like, wherein the cap has a spring pressed sealing disc secured to its underside for sealing against the top of the spout, and wherein the spout has opposite notches only adjacent said top through which opposite latching lugs on said cap are insertable and upon turning of the cap it becomes latched over the top of the spout as the lugs ride over opposite cam surfaces on the spout which are located only adjacent the top thereof, the cap and the spout having an initial fit sufficiently loose whereby latching can be inadvertently effected by only one of the lugs with the cap tilted and the opposite lug engaging the top of the spout, said cap having means thereon to preclude said latching by only one lug, comprising opposite elongated blocking prongs extending downwardly from the respective latching lugs and which are engageable with either of the notches to prevent turning of the cap unless the cap is fully seated
  • each blocking prong is of sufficient length to prevent turning of the cap when only one latching lug is fully inserted through a notch.
  • each blocking prong is substantially perpendicular to the top of the cap.
  • each blocking prong is wider at the top than the depth of each of the notches.
  • the safety closure cap of claim 8 wherein the cap has a downwardly extending cylindrical flange and the blocking prongs are spaced inwardly of said flange to cooperate with internal notches of said spout.
  • a safety closure cap for bayonet connection with a spout wherein said spout has a top and opposite notches through which opposite latching lugs on said cap are insertable and upon turning of the cap it becomes latched over the top of the spout as the lugs ride over opposite cam surfaces on the spout; said cap having means thereon to preclude latching by only one of the lugs with the cap tilted and the opposite lug engaging the top of the spout, comprising opposite elongated latching lugs, blocking prongs extending downwardly from the respective cap latching lugs, and which are engageable with edges of the notches to prevent turning of the cap unless the cap is fully seated on the top of the spout, said cap also having a downwardly extending cylindrical flange with which the blocking prongs are connected to cooperate with external notches of said spout.
  • a safety closure cap for bayonet connection with a spout comprising a top, a spring pressed sealing disc secured to the underside of the top for sealing against the top of the spout, opposite latching lugs located only at substantially the same level on the cap for bayonet connection upon turning of the cap on the spout with opposite bayonet notches of the spout located only adjacent the top of the spout, the lugs being sufficiently small relative to the bayonet notches to form a sufficiently loose fit of the cap on the spout whereby latching can be inadvertently effected by only one of the lugs with the cap tilted and the opposite lug engaging the top of the spout, and an elongated blocking prong extending downwardly from and rigid with each latching lug to insure that the cap is fully seated on the top of the spout before it can be turned to latch said cap into the spout 8.
  • a safety closure cap for bayonet latching with the filler spout of an automobile tank or the like comprising a top, a cylindrical flange extending downwardly from the top of the spout, a spring pressed sealing disc secured to the underside of the cap top located within said flange for sealing against the top of the spout when the cap is turned to close the same, only one pair of opposite latching lugs located at substantially the same level adjacent said top of the cap for insertion through opposite bayonet notches located at substantially the same level adjacent the top of said spout, said latching lugs being sufficiently small relative to the bayonet notches to form a sufficiently loose fit of the cap on the spout whereby latching of the cap onto the spout can be inadvertently effected by only one of the lugs with the cap tilted and the opposite lug engaging the top of the spout, and opposite elongated blocking prongs spaced inwardly of said cylindrical flange extending downwardly from

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Closures For Containers (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
US00250241A 1972-05-04 1972-05-04 Safety closure cap Expired - Lifetime US3784047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25024172A 1972-05-04 1972-05-04

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US3784047A true US3784047A (en) 1974-01-08

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US00250241A Expired - Lifetime US3784047A (en) 1972-05-04 1972-05-04 Safety closure cap

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US (1) US3784047A (enExample)
JP (1) JPS5614541B2 (enExample)
CA (1) CA1001116A (enExample)
DE (1) DE2322564C2 (enExample)
FR (1) FR2197780B1 (enExample)
GB (1) GB1412855A (enExample)
IT (1) IT1021513B (enExample)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2500852A1 (de) * 1974-01-17 1975-07-24 Alfred Cooper Sicherheitsverschlusskappe mit haltefuessen
US4031914A (en) * 1975-12-31 1977-06-28 Neri John E Sink trap with clean out opening
US4081102A (en) * 1976-03-25 1978-03-28 Nihon Radiator Co., Ltd. Cap for fuel tank
US4360122A (en) * 1981-08-10 1982-11-23 International Harvester Co. Tank cap having sequential engagement and disengagement
US5102000A (en) * 1991-07-12 1992-04-07 Feltman Iii Charles H Drink Mug
US5284271A (en) * 1992-10-19 1994-02-08 Gary Ross Safety mug for liquids with improved lid which permits the liquid to retain its temperature and improved exterior body contour to facilitate designs silkscreened on the mug
US5527513A (en) * 1994-04-08 1996-06-18 Becton Dickinson And Company Collection assembly
US5529201A (en) * 1994-05-20 1996-06-25 Stant Manufacturing Inc. Cam-on filler neck cap
US5680951A (en) * 1995-08-07 1997-10-28 Feltman, Iii; Charles H. Flow control cover for a cup
US6568553B2 (en) * 2000-06-07 2003-05-27 Toyoda Gosei Co., Ltd. Tank cap and tank cap apparatus
US20030197013A1 (en) * 2002-04-22 2003-10-23 Plastican, Inc. Reusable lid and container
US20040065664A1 (en) * 2001-02-12 2004-04-08 Steadman William David Opening assembly
US6988519B2 (en) 2002-07-17 2006-01-24 Dr. Ing. H.C.F. Porsche Ag Filler device, particularly an oil filler device on an internal-combustion engine
US20060163253A1 (en) * 2001-02-12 2006-07-27 Steadman William D Recessed opening assembly apparatus and method
US8308010B2 (en) 2010-12-07 2012-11-13 Letica Corporation Tamper evident, child resistant container
US9156597B2 (en) 2010-12-07 2015-10-13 Letica Corporation Child resistant, tamper evident container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9402849U1 (de) * 1994-02-16 1994-05-05 Hp Haushaltprodukte Gmbh, 56410 Montabaur Vorrichtung zur Aufnahme und zum Transport von Lebensmitteln

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1070752A (en) * 1913-02-08 1913-08-19 Clarence E Tyler Surface box for subsurface pipes.
US2663456A (en) * 1950-08-25 1953-12-22 Eaton Mfg Co Closure cap

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH109104A (de) * 1924-05-19 1925-06-16 Zigerli Paul Verschluss für Behälter.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1070752A (en) * 1913-02-08 1913-08-19 Clarence E Tyler Surface box for subsurface pipes.
US2663456A (en) * 1950-08-25 1953-12-22 Eaton Mfg Co Closure cap

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2500852A1 (de) * 1974-01-17 1975-07-24 Alfred Cooper Sicherheitsverschlusskappe mit haltefuessen
US3913783A (en) * 1974-01-17 1975-10-21 Alfred Cooper Safety closure cap with retaining feet
US4031914A (en) * 1975-12-31 1977-06-28 Neri John E Sink trap with clean out opening
US4081102A (en) * 1976-03-25 1978-03-28 Nihon Radiator Co., Ltd. Cap for fuel tank
US4360122A (en) * 1981-08-10 1982-11-23 International Harvester Co. Tank cap having sequential engagement and disengagement
US5102000A (en) * 1991-07-12 1992-04-07 Feltman Iii Charles H Drink Mug
US5284271A (en) * 1992-10-19 1994-02-08 Gary Ross Safety mug for liquids with improved lid which permits the liquid to retain its temperature and improved exterior body contour to facilitate designs silkscreened on the mug
US5527513A (en) * 1994-04-08 1996-06-18 Becton Dickinson And Company Collection assembly
US5529201A (en) * 1994-05-20 1996-06-25 Stant Manufacturing Inc. Cam-on filler neck cap
US5680951A (en) * 1995-08-07 1997-10-28 Feltman, Iii; Charles H. Flow control cover for a cup
US6568553B2 (en) * 2000-06-07 2003-05-27 Toyoda Gosei Co., Ltd. Tank cap and tank cap apparatus
US20030102314A1 (en) * 2000-06-07 2003-06-05 Hiroyuki Hagano Tank cap and tank cap apparatus
US6913162B2 (en) 2000-06-07 2005-07-05 Toyoda Gosei Co., Ltd. Tank cap and tank cap apparatus
US20040065664A1 (en) * 2001-02-12 2004-04-08 Steadman William David Opening assembly
US7051896B2 (en) * 2001-02-12 2006-05-30 William David Steadman Opening assembly
US20060163253A1 (en) * 2001-02-12 2006-07-27 Steadman William D Recessed opening assembly apparatus and method
US7950542B2 (en) 2001-02-12 2011-05-31 William David Steadman Recessed opening assembly apparatus
US20030197013A1 (en) * 2002-04-22 2003-10-23 Plastican, Inc. Reusable lid and container
US6851569B2 (en) * 2002-04-22 2005-02-08 Plastican, Inc. Reusable lid and container
US6988519B2 (en) 2002-07-17 2006-01-24 Dr. Ing. H.C.F. Porsche Ag Filler device, particularly an oil filler device on an internal-combustion engine
US8308010B2 (en) 2010-12-07 2012-11-13 Letica Corporation Tamper evident, child resistant container
US9156597B2 (en) 2010-12-07 2015-10-13 Letica Corporation Child resistant, tamper evident container

Also Published As

Publication number Publication date
FR2197780A1 (enExample) 1974-03-29
JPS5614541B2 (enExample) 1981-04-04
GB1412855A (en) 1975-11-05
IT1021513B (it) 1978-02-20
DE2322564C2 (de) 1984-04-12
FR2197780B1 (enExample) 1977-04-29
JPS4954720A (enExample) 1974-05-28
DE2322564A1 (de) 1973-11-08
CA1001116A (en) 1976-12-07

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