Abstract: An automotive vehicle has a body with an external surface, a fuel tank filler pipe, and a fuel tank cap assembly comprising a plug sealingly engageable with the fuel tank filler pipe by insertion into the filler pipe to a rotatively fast sealing position, a cover carried with the plug that substantially blends with the body external surface when the plug is in the sealing position, and a latch mechanism carried with the fuel tank cap assembly operable without rotation of the cover to permit the assembly to move from the sealing position to a release position displaced from the body external surface, the latch mechanism also being operable in the release position through rotation of the cover to permit the assembly to move from the release position to a free position disengaged from the filler pipe.

Abstract: A lockable pressure-release fuel cap is provided to close a filler neck. An actuation system within the fuel cap is operable to enable a user to vent fuel vapor pressure in the filler neck in response to rotation of a key in a lock unit included in the fuel cap prior to removal of the fuel cap from the filler neck.

Abstract: An air-tight filler neck cap wherein an operating torque is amplified to obtain a large tightening torque including an outer cap of the filler neck which includes a knob and a cover grip which is engaged with a body of an automobile to thereby prevent the cover grip from rotating and an inner cap of the filler neck cap which is moved in association with the outer cap by a planetary gear mechanism. The planetary gear mechanism includes a sun gear, planet gears and a ring gear located on a carrier disk plate which is rotatably attached to an upper face of the inner cap.

Abstract: A fuel filling assembly for liquid fuel tanks, especially on boats or the like, includes a fill tube adapted for mounting through a deck and a closure cap preferably hinged over the fill tube opening for selective opening and closing. Preferably, a positioning member allows the closure cap to be mounted in various positions with respect to the fill tube to accommodate various mounting locations on a boat. The fill tube may be angled or straight to further accommodate varied mounting positions. In one version, a separate vent tube joins the fill tube to provide continuous fuel tank venting, pressure equalization and return of fuel overflow to the fuel tank in case of tank overfill. In the vented version, a rigid shield on the closure cap extends over the opening to a vent passageway through the cap to restrict the escape of liquid fuel in the event of fuel surge due to extreme boat movements or the like when the closure cap is closed.

Abstract: A fuel filling assembly for liquid fuel tanks, especially on boats or the like, includes a fill tube adapted for mounting through a deck and a closure cap preferably hinged over the fill tube opening for selective opening and closing. Preferably, a positioning member allows the closure cap to be mounted in various positions with respect to the fill tube to accommodate various mounting locations on a boat. The fill tube may be angled or straight to further accommodate varied mounting positions. In one version, a separate vent tube joins the fill tube to provide continuous fuel tank venting, pressure equalization and return of fuel overflow to the fuel tank in case of tank overfill. In the vented version, a flexible valve member on the closure cap closes a vent passageway through the cap in the event of fuel surge due to extreme boat movements or the like when the closure cap is closed.

Abstract: An improved construction for a vehicle gas cap includes a threaded engagement portion, a main body for sealing the gas tank throat and for allowing manipulation of the improved cap, a disk, and a hinged C-clamp attached to the main body. The disk is dimensioned such that it allows for the retaining of the trigger of a gas pump handle in an operable position when fitted into the gas pump handle trigger slot. The C-clamp portion is dimensioned such that it allows for the retaining of the trigger of a gas pump handle in an operable position when fitted thereover. The disk of the cap is the same height as the clamp portion's thickness, and allows for a flush surface overall when the C-clamp is folded down into a closed position.

Abstract: A quick-on cap includes a closure body for engaging a filler neck and a handle for rotating closure body. Cap also includes a control mechanism for initially providing a lost-motion driving connection between closure body and handle during cap removal and always providing a direct-drive driving connection during cap installation.

Abstract: A fuel tank cap assembly is provided which includes a plug portion sealingly engageable with a fuel tank filler pipe and a cover portion that is positionable in blending contiguous relationship with adjacent portions of the automotive vehicle body when the plug portion is positioned in a sealing position with respect to the fuel tank filler pipe.

Abstract: The closure includes a base adapted to be screwed into a fuel tank filler pipe and having a fill opening normally closed by a hinged flapper which is opened when a fuel nozzle is inserted into the fill opening. The base is shielded against being manually gripped and unscrewed from the filler pipe by a cover also having a fill opening and normally supported for free rotation on the base so that turning of the cover normally is ineffective to unscrew the base. When a key is inserted into the cover, it couples the cover and the base for rotation as a unit and thereby enables the base to be unscrewed from the filler pipe. The same key also is used to actuate a locking device for locking the flapper in its closed position.

Abstract: A fuel cap tether apparatus on a motor vehicle having a body panel with an access opening or port therein, a fuel tube including a neck behind the access opening, a fuel door mounted on the vehicle for pivotal movement between open and closed positions exposing and concealing, respectively, the access opening, and a fuel cap closing the fuel tube neck and removable therefrom in response to twisting of the fuel cap relative to the fuel tube neck. The fuel cap tether apparatus includes a string-like flexible tether having a first end rigidly connected to the vehicle and a second end connected to the fuel cap such that the latter is rotatable relative to the tether and a hook on the fuel door disposed laterally outboard of the body panel surrounding the fuel tube access opening when the fuel door is in its open position. After the fuel cap is removed, the tether is hung in the hook and the fuel cap released.

Abstract: An automotive fuel filler pipe cap detection system has a filler pipe cap retainer on the end of the filler pipe for retaining the filler pipe cap, a passage through the cap retainer with a line outlet leading to a vacuum line connected to a manifold, and a seal outlet leading to the underside of the fuel cap when it is in place. Vacuum is generated in the vacuum line when the engine is started with the cap covering the seal outlet. A two position pressure switch connected to the vacuum line is in a first position when vacuum is sensed in the vacuum line and a second position when vacuum pressure is not sensed. A "fuel cap missing" indicator is lit to warn the operator when the switch is in the second position.

Abstract: A filler neck cap is provided for closing a threaded filler neck of a tank. The cap includes a housing having threads for engaging the filler neck, a seal for sealingly engaging the filler neck upon rotation of the housing in a first direction, and a handle for rotating the housing relative to the filler neck. The handle includes a top wall and an appendage directly appended to the underside of the top wall and cantilevered downwardly therefrom at a point spaced apart from the axis of rotation of the handle. The cap further includes a delayed actuation mechanism for providing a lost-motion driving connection between the handle and the housing. The delayed actuation mechanism includes an annular ring engaging the housing and a driven lug appended to the annular ring. The driven lug engages a terminal portion of the appendage during rotation of the handle about its axis of rotation to provide the driving connection between the handle and the housing.

Abstract: A closure for a fuel tank filler neck has a closure cap which is swivel-mounted on the upper side of the said closure and can be opened from the closed position by the effect of force on a lever arm arranged on the far side of the swivel axis. A pawl for locking and unlocking of the closure cap is swivellable and prestressed in the closing sense or direction by spring force and has an outwardly extending lever arm for mechanically lifting the pawl against the spring force. To ensure a permanent and reliable closing function of the closure cap, the filler neck bears an axially accessible adjusting ring which is arranged coaxially with respect to the cap. The ring is mounted rotatably on the outer circumference of the latter and/or on the axial end face of a shoulder thereof, and has on its upper side, at least in a subregion, a spiral toothing. A toothed segment is arranged on the lever arm of the closure cap.

Abstract: A cap assembly closing off the filler tube of a cylindrical fuel tank. The filler tube has an annular shoulder defining an inlet opening for the tube. An annular elastomer seal seats within a groove indented downwardly in this shoulder. A spring-biased closure member in a fuel cap seats against this seal. A dust seal is provided in the cap assembly. Roll pins provide a snap acting closure system in the cap assembly.

Abstract: A quick-on cap (10) is provided for engaging a filler neck (22). The cap (10) includes a closure for closing the mouth of the filler neck (22) and a gripping mechanism for gripping the filler neck (22) to establish a fuel vapor seal between the closure and the filler neck (22). The closure includes a core (18) and a sleeve (14) that is movable relative to the core (18). The sleeve (14) carries a sealing ring (34) that is configured to seal against the filler neck (22). The gripping mechanism is coupled to the core (18) and sleeve (14) and grips the filler neck (22) to compress the sealing ring (34) between the sleeve (14) and the filler neck (22) in response to movement of the core (18) relative to the sleeve (14) in a cap-installation direction. The closure also includes a handle cover (12) coupled to the core (18) to make it easy for a user to move the core (18) relative to the sleeve (14) in the cap-installation direction an amount sufficient to actuate the gripping mechanism.

Abstract: An apparatus for introducing fluid having a volatile organic component from one container, for example, a fuel storage vessel to a receiving container such as an on-board fuel storage tank of an automotive vehicle with reduced discharge of organic vapors into the surrounding atmosphere, the apparatus including a filler cap having at least one positively sealing quick connect fitting through which fluid can be introduced which is releasable attachable with a mating fitting located on the filler nozzle of an external fluid delivery device.

Abstract: A push-on filler neck cap for a fill passageway of a tank. The cap is provided with a push top and a dependent housing sized to fit within the fill passageway and with a fill passageway seal that is located at the lower inserted end of the housing and wherein the can is also provided with a restraining mechanism located between the push top and the fill passageway seat for securing the cap to the passageway in a sealed manner. The restraining mechanism is defined by a plurality of lugs which: 1) engage into a recess in the fill passageway; 2) pivot outward from the housing to engage the recess in response to movement of a spring biased lever pivotedly mounted to the push top with the recess; and (3) are biased to pivot outwardly for engagement with the recess by a spring located within the housing, which spring also urges the seal into its sealing relationship within the fill passageway.

Abstract: According to the present invention, a push-on cap is provided for engaging a filler neck. The cap includes means for closing the mouth of the filler neck. This closing means includes a housing and an end member which is coupled to the housing while being axially movable relative to the housing. The cap further includes means for gripping the filler neck in response to the sliding axially inward movement between a filler neck-engaging position and a filler neck-disengaging position.

Abstract: An all plastic cap for an automotive power steering reservoir includes a cap portion and a central integrally molded stem portion, the latter having oppositely extending integrally molded stiffly resilient locking ears with an elastomeric gasket disposed within the cap such that the ears may engage a cam lip within the reservoir neck as the cap is turned with the ears drawing the cap into the neck and squeezing the gasket to effect the seal of the neck opening.

Abstract: An apparatus for introducing fuel having a volatile hydrocarbon component into an on-board fuel storage tank of an automotive vehicle with reduced discharge of fuel vapors into the surrounding atmosphere, the apparatus including a fuel filler cap having at least one centrally positioned aperture extending therethrough through which a suitably configured fuel directing nozzle can pass. The fuel directing nozzle includes a vapor conveying line located in the interior of the nozzle capable of being brought into fluid communication with a vapor collection chamber located in the fuel filler cap such that, when engaged, a circuit is completed, fuel can be introduced into the on-board fuel storage tank of the automotive vehicle and any fuel vapors generated or displaced during the operation can be returned to the remote storage site or another suitable vapor collection facility remote from the automotive vehicle without contacting the surrounding environment.

Abstract: An apparatus for introducing fluid having a volatile organic component from one container, for example, a fuel storage vessel to a receiving container such as an on-board fuel storage tank of an automotive vehicle with reduced discharge of organic vapors into the surrounding atmosphere, the apparatus including a filler cap having at least one positively sealing quick connect fitting through which fluid can be introduced which is releasable attachable with a mating fitting located on the filler nozzle of an external fluid delivery device.

Abstract: A fuel cap is provided to improve sealing characteristics of a pressurized fuel tank. When the inner pressure P of a fuel tank is a negative pressure less than a predetermined regulation negative pressure Pr which does not need to be controlled, a valve 160 is pressed upward by the urging force of a spring 164 to bring a lip portion 161 of the valve 160 into contact with a seal surface 156 of a seal body 150 to thereby close the valve 160. As a result, the fuel tank is sealed from the outside air. At this time, a flat plate portion 155 of the rubber-made seal body 150 is bent by the urging force of the spring 164 so that the gap L between the flat plate portion 155 and the lower surface of a ceiling plate portion 131 is narrowed. In addition, the divergence of center of the valve 160 with respect to the seal body 50 is limited by ribs 162 of the valve 160 located in a valve slide hole 135.

Abstract: A liquid fuel tank filling and venting device including a hollow body member containing a chamber, an inlet opening for supplying fuel downwardly into the chamber, a fuel outlet opening for supplying fuel from the chamber, and an overflow opening connected with the chamber, each of the fuel outlet and overflow outlets being independently connected with the fuel tank, whereby overflow fuel is returned to the chamber via the overflow outlet. A fuel cap is provided for closing the inlet opening, the fuel cap containing a vent passageway including a removably mounted filter, so that the tank is continuously vented to atmosphere when the fuel cap is in either the open or closed position.

Abstract: A blanking cover for the filler neck of a motor vehicle fuel tank has a grip protruding from the blanking cover body so as to ensure that reliable filler neck sealing is maintained in the case of a crash when a collision occurs between the grip and a body part. The grip can be released from the blanking cover body under the action of crash forces.

Abstract: A cap for a fill pipe of a fluid container, such as a gas tank, is provided. It has a vent hole which is normally held unsealed by the weight of a ball which impinges against and thereby tilts a spring loaded pin carrying an O-ring. When the cap tips away from the vertical by more than a pre-selected angle, the ball rolls away from the pin and the spring urges the pin to an orientation where the O-ring seals the hole. When the container is tipped beyond the pre-selected angle, should the internal tank pressure exceed a pre-determined level, the pressure overcomes the force of the spring allowing relief venting.

Abstract: A cap with valve includes a cap body 1, a flange portion 5, and a gasket 11. The cap body 1 has an external threaded portion 2 for threadedly engaging a fuel supply inlet. The flange portion 5 extends outwardly in the radial direction from an upper portion of the cap body 1. The annular gasket 11 has a substantially circular cross-section, and is disposed on a sealing surface of the flange portion 5. This gasket 11 has a projecting portion 15A in contact with flange portion 5 and this projecting portion extends along the entire circumference of the toroidal gasket 11. The projecting portion 15 A absorbs surface irregularities on flange portion 5 thus eliminating the need for additional manufacturing steps, such as grinding, thereby reducing the manufacturing cost of the cap with valve.

Abstract: This invention relates to a power fuel tank cover and in particular to one including a motor, a collar having a circular member and a tubular member formed at one side thereof, a worm rod inserted into the tubular member of the collar, a sleeve fitted into said collar, a worm gear mounted on the sleeve and engaged with the worm rod, an actuating cylinder with external threads being threadedly engaged with the center hole of the worm gear, a lid pivotally connected with an upper portion of the actuating cylinder and having a seat with a groove at a bottom, a positioning plate on a top and a hole extending through the seat and the positioning plate for receiving a ball, a plug and a spring, a connecting member pivotally connected between the collar and the lid, and a press plate threadedly engaged with the positioning plate by a screw connected with a linking rod via a ring which is in turn connected with a fixing plate, whereby the fuel tank may be automatically opened and closed simply by pressing a switch ne

Abstract: A cap for closing a tubular opening, especially the opening of an oil filler tube, which cap comprises a first part or cover part 12, which can be attached to the tubular opening by a bayonet lock, and a second part provided as an inside part 13, which is freely rotatable on the cover part 12 and is attached to the cover part 12 by a snap fastener 22. On the inside part 13 is a gasket 14 which seals the tubular opening. Sliding contact surfaces 20, 21 are provided between the inside part and the outer cap, so that no shearing forces act on the inside part or on the gasket when the tubular opening is closed or opened, thereby substantially facilitating the closing and opening of the tubular opening.

Abstract: A magnetic fuel tank cap is provided for closing off the filling inlet tube of a motor vehicle which consists of an externally threaded cylindrical shank, which threadably engages with the filling inlet tube of the motor vehicle. A head is secured to the shank and is larger than the shank. When the head is turned to drive the shank into the filling inlet tube, the head will seal the filling inlet tube. A magnet is on top of the head for releasably connecting the head, when inverted, to a metallic part of the motor vehicle after the shank is removed from the filling inlet tube. In other embodiments adaptors are provided to releasably connect the head of a conventional fuel tank cap to the metallic part of the motor vehicle.

Abstract: A fuel cap 1 for controlling the pressure within a fuel tank which has improved sealing properties between a valve member 43 of a pressure control valve 41 and a seat surface 35. The pressure control valve 41 opens and closes a flow path hole 33 in a cap body 5 so as to control the pressure within the fuel tank. In this pressure control valve, the valve member 43 is seated on the seat surface 35 in accordance with the force of a spring 71 and the pressure within the fuel tank. The valve member has a disk portion 49 which is flexed when the valve member receives a large pressure in a valve closing direction. An outer lip 57 and an inner lip 58 are formed on the disk portion 49. The outer lip 57 is seated on the seat surface 35 when the pressure within the fuel tank reaches a predetermined pressure. When the pressure increases further, the disk portion 49 is flexed, so that the inner lip 58 is also seated on the seat surface 35.

Abstract: A self-closing cap for the filler neck of liquid containers, comprising a closure ring having an annular seal, said ring being attachable to said filler neck and having an orifice for receiving a nozzle that discharges a pressurized stream of liquid into the container, and of a spring-biased closure flap swivel-mounted on said closure ring and provided with a seal, wherein the improvement is the provision of a gasket around the orifice for preventing atomized liquid from said nozzle from being back-blown out of the orifice and onto the hand of the person handling the nozzle.

Abstract: A fuel cap for closing a threaded filler neck of a fuel tank is disclosed. The can has a central button or driver which reciprocates within an opening in the crown of the cap. When the cap is installed on a filler neck, the driver is in an upper position and the crown freely rotates relative to the threaded housing in a cap-removal direction. When the driver is depressed, a pressure relief valve is opened and a driving relationship is created between the crown and the threaded housing in a cap-removal direction, permitting the cap to be removed from the filler neck. When the crown is rotated in a cap-installation direction, the driver is moved to the upper position and the pressure relief valve is closed.

Abstract: A fuel cap is disclosed which is particularly effective in not only addressing the problem of permitting reliable relief pressure, but also in providing adequate sealing for varying environmental conditions, such as extreme pressure, temperature and swelling. The cap includes a plug member having at its lower end an elastomer sealing member integrally molded into a groove that extends around the periphery of the cap. Moreover, the sealing member is uniquely oblong shaped such that with increasing internal pressure within the tank the sealing member is deformed such as to assist in the sealing.

Abstract: The present invention relates to a cap for reserve tanks, wherein said cap has a vent path. The cap consists of an upper member and a lower member, wherein an annular rib is defined in the upper surface of the lower member. The annular rib is forced into abutment with the lower surface of said upper member so as to form an inner chamber and an outer chamber between said upper and lower members. A portion of said annular rib is extended in the central direction of the annular rib, and a groove or a hole is formed in the extention of the annular rib, said groove or hole allowing communication between said inner and outer chambers.

Abstract: A novel device that can be placed on a car gas cap to connect the cap to the car so that one cannot lose the cap due to forgetfulness or such. The device consists of an elastic body which can be stretched over the cap to allow for added friction grip to enable someone to remove or tighten the cap, and a connector strap assembly consisting of a flexible strap with a means of attachment to the car body. A suction cup is placed on the opposite side of the elastic body from the opening for the cap. This allows the user to attach the cap back out of his way while filling his gas inlet by merely pulling the cap back with the elastic body covering it and sticking out of his way conveniently and easily. Various sizes and shapes of car gas caps can be allowed for by the elastic nature of the device, however to give the best fit it is contemplated that several sizes will be available.

Abstract: A torque-override cap is provided for use in a filler neck of a tank. The cap includes a housing configured to engage the filler neck, a shell for providing a hand grip, and a ratchet wheel and a biasing mechanism disposed between the shell and the housing for providing a driving connection between the shell and the housing. The shell includes a plurality of drive teeth, while the ratchet wheel includes a plurality of driven teeth configured to engage the drive teeth to provide a torque-limited connection in the cap-advancing direction and a positive connection in the cap-removal direction. The biasing mechanism operates to yieldably bias the driven teeth of the ratchet wheel into engagement with the drive teeth of the shell to establish the torque-limited and positive connections.

Abstract: A pressure relief and venting closure cap for a filler neck of a vehicle gas or coolant system tank having an initial rotary drive which opens a vent valve in response to a differential movement between a cap shell and a vent valve actuator to vent the filler neck and wherein continued rotation of the cap shell causes disconnection of the cap shell and the filler neck. There are two separate drives from the cap shell, one to operate the vent valve and one to rotate a sealing element which screwingly connects the cap to the filler neck. A lost motion connection is provided for the drive to the sealing element so that disconnection can only take place after venting. A torque over-ride is provided for the closure to limit its rotary closing screwing movement after the vent valve is closed. A second drive between the lost motion connection and the vent valve is provided to stop differential rotation between the cap shell and the vent valve actuator when the closure member is rotated.

Abstract: A fuel tank system has a fuel tank, a fuel charging port extending from the fuel tank and disposed in the vicinity of an outer panel of a body and a fuel lid for covering the fuel charging port. The fuel lid is mounted such that it is movable substantially horizontally relative to a portion of the outer panel of the body corresponding to the fuel charging port and that a distal end of the fuel lid is capable of moving away from the fuel charging port and the outer panel. A fuel passage having an outlet disposed on a rear surface side of said fuel lid in such a manner as to be oriented downwardly is disposed in such a manner as to extend from said fuel tank. This fuel passage allows a liquid fuel overflowing during overfueling to flow.

Abstract: A remotely controlled gas cap assembly includes a strip mounted around a fuel inlet of a fuel tank. The strip extends around the fuel inlet and has two spaced end plates which face each other. A transverse pivot pin is pivotally mounted on the two end plates. A link protruding from the pivot pin is attached to a bar having two sides each formed with an annular groove. The control assembly further has a remotely controllable pneumatic cylinder with a piston rod. The piston rod has a distal forked end which is comprised of two opposite branch rods. A roller is provided on an inner side of each branch rod which is received in a corresponding annular groove in each side of the bar and is movable along the annular groove. A gas cap is integrally formed with the link. A rubber block protrudes from an inner side of the gas cap. The gas cap is lifted to expose the fuel inlet when the piston rod is in a first position. The rubber block of the gas cap seals the fuel inlet when the piston rod is in a second position.

Abstract: A closure cap for an automotive fuel tank displays informational indicia on one or more flags which are caused to project from the periphery of the cap when the cap is twisted for removal from the tank filler tube. The cap is constructed with two coaxially mounted plate members which are rotatably moveable relative each other by the act of twisting the cap off or on the filler cap. The relative movement of the two plates is utilized to propel the flags back and forth between one position in which the flags are disposed substantially entirely within the periphery of the cap and another position in which the flags extend substantially beyond the periphery of the cap.

Abstract: The foregoing and other objects of the invention will be realized by a closure assembly engageable with the filler tube of a fuel tank for preventing the outflow of fuel vapors from the fuel tank during a filling procedure and including a manually grippable generally circular top member having a central axial opening therein for permitting the passage of a fuel delivery nozzle therethrough and receiving a relatively smaller press fitted cap thereat. A threaded bottom member of generally circular cross section extends from the top member for threadable engagement with a threaded opening in the filler tube. The bottom member is of a generally hollow construction and has a central axial opening therein and in which a resilient circular annular fuel vapor absorbent filter element is located.

Abstract: A vented fuel tank cap and valve assembly is described having a cam actuated connector for connecting the cap to the top of the filler neck tube for the tank. Three vent passages are employed in the cap with common outlet openings. One passage is normally open but includes a float valve which can close such passage when the vehicle tips. A second passage includes a pressure relief valve which opens when the tank pressure exceeds a predetermined pressure. The bias spring for the pressure relief valve also functions as the bias for the cam actuated connector. The third passage includes fusible metal inserts provided in the movable pressure relief valve member to open such passage when the temperature of the tank exceeds the melting point of such inserts.

Abstract: A fill tube (12) leading into a fuel tank (10) is provided with a normally closed closure door (20) and a fill nozzle seal (24, 26, 30) spaced outwardly of the closure door (20). When liquid fuel is to be added to the fuel tank (10) a fill nozzle (32) is inserted through the fill nozzle seal (24, 26, 30). A seal element (30) engages the outside diameter of the fill nozzle (32) and seals against vapor leakage between the seal element (30) and the fill nozzle (32). Further insertion of the fill nozzle (32) into the fill tube (12) moves the end of the fill nozzle (32) against the closure door (20) opening the closure door (20). When this happens, fuel vapor within the fuel tank (10) flows through an opening (18) that is normally closed by the closure door (20), to and through an outlet (36) leading from a chamber (34) that is between the fill nozzle seal (24, 26, 30) and the closure door (20).

Abstract: In a plastic filler neck cap including therein a receptacle for a pressure control valve and a receptacle for an anti-leakage assembly, a positive-negative pressure valve is compactly constructed in such a manner that the valve body retainer plate is formed into a hat-like configuration including an upper portion with a passing hole at its center, an outer peripheral wall and a spring reception tongue; the valve body is in engagement with the valve body retainer plate whose passing hole sustains a portion of the valve body; the valve body presents a double-disk shape with a smaller upper disk and a larger lower disk having on the upside a peripheral upper ridge and on the downside a lower ridge inside the upper ridge, and further a center communication opening extending through both the disks; the diameter of the negative pressure valve body is predetermined larger than the extension of the lower ridge on the bottom of the valve body, forming a pan-like shape setting the opening side down with a skirt portion

Abstract: A locking spout closure cap is set forth provided with a threaded cylindrical lowermost portion with a cap mounted about the uppermost portion. Underlying the cap are plural pairs of combination dials provided with operative engagement with downwardly extending positioning legs. The combination dials are mounted about posts with an alignment plate operably secured to the posts wherein each of the combination dials must be rotated into alignment to position each respective positioning leg in overlying engagement with a predetermined orientation of latch openings secured to a combination plate to enable operative engagement with the uppermost portion of the combination plate to enable securement or removal of the cap relative to an associated spout.

Abstract: A flip-top replacement gas cap for replacing conventional screw-on caps provided as original equipment with present day motor vehicles. Two embodiments of the invention are disclosed. The first is a manually actuated device. The second is a key actuated device. In both embodiments pressure relief valves are included to vent over-pressure within the gas tank and to bleed off pressure prior to opening of the flip-top cap. The key actuated emboidment includes a rachet cam assembly which permits the cap to be screw fastened to a motor vehicle gas filler vent but precludes the unscrewing of the cap thereafter. "Gas cap" is used herein as a generic descriptor for any closure cap used to seal a filler tube of a fuel tank or any other storage vessel.

Abstract: For the inlet of a vehicle fuel tank, an improved cap having an outer gripping portion and an inner body portion for threading into tank's inlet. The inner and outer portions are connected by several axially extending, thin posts so that when the outer portion is impacted, axially or laterally, the portions are severed by breakage of the posts.

Abstract: A self-closing cap for the filler neck of liquid containers, consisting of a closure ring having an annular seal, said ring being attachable to said filler neck, and of a spring-biased closure flap swivel-mounted on said closure ring and provided with a seal, wherein said closure flap is swivel-mounted with two bearing arms to a shaft supported by a bearing block inserted in a recess on the housing ring and wherein a locking spring seated on said shaft of said bearing block biases said closure flap, with one on end of said spring engaging said closure flap or a bearing arm and the other end engaging said bearing block.

Abstract: A sealing assembly is provided for use in a filler neck sized to receive a fuel-dispensing nozzle. The sealing assembly includes an elastic seal member between the filler neck and a fuel-dispensing nozzle and a seal retainer for clamping the seal member in the filler neck to define in the filler neck an outer chamber communicable with the atmosphere and an inner chamber. The seal is configured to admit the fuel-dispensing nozzle into the inner chamber without coupling the inner and outer chambers in vapor communication. The sealing assembly partitions a fuel-conducting passageway in the filler neck to limit flow of vapors and gases through the passageway during dispensing of fuel into the filler neck and past the sealing assembly.

Abstract: A removable cap for closing the filler neck of a fuel tank for an internal combustion engine. The cap includes a one piece gasket and baffle member which not only provides a fluid seal between the cap and the filler neck, but also permits venting of the fuel tank through the gasket. The one piece member includes an annular flat gasket portion integrally formed on the outer periphery of a dome-shaped baffle member projecting downwardly from the inner surface of the cap. Venting is accomplished by means of at least one vent opening extending through the dome-shaped baffle member which in turn communicates via a vent chamber to a passageway formed through the gasket. The passageway in turn communicates with a non-sealing threaded interconnection between the cap and filler neck. A splash guard is also located beneath the baffle member to aid in preventing fuel from splashing through the vent openings in the baffle member.