Abstract: In a string-attached cap in which one end of an elongated coupling member is connected to a capping member, the capping member is formed of an electroconductive resin, and the coupling member is also formed of an electroconductive resin which is flexible.

Abstract: A closure for a filling tube of a motor vehicle with a swivel closure cover is arranged outside of a center opening of the filling tube in the tank and pivots around a swivel axis positioned in a plane perpendicular to the center axis of the opening. The closure is pre-stressed by a spring in a direction counter to the insertion movement of a filling pipe of a fuel supply nozzle. The closure is supported on a lower surrounding opening edge of the opening in the closed position to form a seal. An upstanding swivel facilitating element that can be contacted by the filling pipe is arranged on the closure. The closure cover is swiveled in a force-saving manner as a result of this swivel facilitating element.

Abstract: A cap (50) that is engageable with a tank filler neck (52) includes a closure (56), handle (54), and an annular gasket (76) on an axially inner end of closure (56) in spaced-apart relation to handle (54) and closure retainer apparatus (70) mounted on closure (56). Closure (56) includes an upper housing (62) carrying closure retainer apparatus (70) and a lower housing (66) rotatably coupled to upper housing (62) and carrying annular gasket (76) and an anti-rotation lug (68) positioned to engage filler neck (52) during cap installation. A delayed actuator mechanism (58) rotatably couples handle (54) to upper housing (62) to provide a lost-motion driving connection in a cap-removal direction (166) and a direct-drive connection in the cap-installation direction (164). Annular gasket (76) includes an annular outer seal (122), a hoop-shaped base (120), and a thin annular multi-directional membrane (124) interconnecting hoop-shaped base (120) and the surrounding annular outer seal (122).

Abstract: A tank closure for a fill opening of a fuel tank has a closing device extending axially through the fill opening of the fuel tank. The closing device includes a grip for actuating the closing device. The closing device also includes a first clamping member and a second clamping member movable axially toward one another. The first clamping member has a first clamping surface and the second clamping member has a second clamping surface. The first and second clamping surfaces face one another and define therebetween an annular chamber. The first and second clamping surfaces are positioned at an angle .alpha. to one another. The closing device also includes a radially elastically expandable sealing ring positioned in the annular chamber.

Abstract: A fuel cap (10) and filler neck fitment (14) for receiving the fuel cap. The fuel cap includes an outer member (18) and an inner closure assembly (20) with seal. The cap and fitment both include lugs (28, 36) which interengage when the cap is moved into a closing position to pressurize the seal determined by an improved overriding ratchet arrangement. During removal of the cap, the outer member moves against a spring action for a predetermined arc before the inner closure assembly is moved to disengage the seal. When the seal is disengaged, the spring action takes up the relative motion. Once removed, the cap is retained by an improved tether (74) assembly. The outer member is connected to the inner annular assembly by an improved structural arrangement which allows the outer member to separate under crash impact.

Abstract: Closure cap for the acoustical indication of a predetermined torque being exceeded during securing, having a closure part which can be secured in a sealing manner on the opening; a gripping part for applying the torque; a rotational connection between the closure part and gripping part, which connection permits relative rotation between said two parts; springs which act between the closure part and gripping part in the direction of the relative rotation and subject the extent of the relative rotation to the torque applied; and at least one arrangement comprising a resilient tongue and a snap-in bead, one part of the arrangement being arranged the gripping part and the other part being arranged on the closure part, and at one point during the relative rotation the tongue, by being temporarily deflected, passing the snap-in bead.

Abstract: A cap assembly (4) for a filler neck, especially of a motor vehicle fuel tank, with a somewhat pot-shaped insert (7) insertable to form a seal for the end of the filler neck (1), having projections (6) at its outer periphery engaging in bayonet or threaded grooves (5) in the filler neck and covered at its upper end projecting from the filler neck by a cap (8), and fitted with an over/underpressure valve (11) which acts via apertures (35, 39) in the base of the insert (7) and in its upper end and/or in the cap (8) between the inside of the filler neck and the atmosphere. The entire insert (7) is pressed from sheet steel and the over/underpressure valve (11) is encapsulated in a valve housing (12) fitted in the insert (7) and having a peripheral flange secured by the folded edge (14) of the insert (7).

Abstract: A self-closing cap for the fuel filler neck of a vehicle is provided which is particularly adapted for use with an automatic gas filling machine. The cap comprises a closure ring having an annular body and screw threads or bayonet lugs for detachably mounting the periphery of the annular body around the open end of the filler neck, and a closure flap assembly formed from a circular member with a nozzle receiving opening, a closure flap spring biased over the opening, and a pivotal mounting connecting the flap over the opening. The closure flap assembly includes a locking ratchet mechanism for securing the circular member over the closure ring in a selected angular position such that the pivotal mounting is substantially 180.degree. opposite from the pivotal connection of the restrictive flap within a filler neck of a vehicle to allow a fuel nozzle from an automatic gas filling machine to be smoothly inserted into and withdrawn from the self-closing cap.

Abstract: A fuel cap which is to be attached to a filler neck which is open for a fuel supply has a closure which is to be fitted to the filler neck and which is made of a resin, and a shell which covers an upper part of the closure and which is made of a resin. The shell is formed by an electrically conductive resin material which has a surface resistance of 10.sup.11 .OMEGA. or less, or has a volume resistance of 10.sup.11 .OMEGA..multidot.cm or less, and a discharge rib portion is integrally formed on the inner peripheral face of the shell. In a state where the fuel cap is attached to the filler neck, the distance between the discharge rib portion and the filler neck or the body of an automobile is 3 mm or less.

Abstract: A fuel tank cap with enhanced sealing property of a valve body of a positive pressure valve, which improves the pressure control ability of the fuel tank cap is disclosed. The positive pressure valve controls the pressure in a fuel tank by opening and closing a rubber valve body. The valve body is supported on its rear face by a valve support member, and is seated on and separated from a seat member. The valve body has a ring recess arranged in an outer circumferential portion thereof to form a thin-wall seating portion, which is seated on the seat member. The valve body is seated horizontally on the seat member, and is supported by the valve support member on both the inner circumferential side and the outer circumferential side of the ring recess.

Abstract: A fuel tank cap structure with reduced casing body weight and improved dimensional accuracy is disclosed. The casing body of the fuel tank cap has a valve chamber, in which a positive pressure valve and a negative pressure valve are received. The casing body includes an outer tubular body and a valve chamber-forming member located inside the outer tubular body. The outer tubular body is joined with the valve chamber-forming member via a horizontal joint member and vertical horizontal members, which are arranged in a hollow portion.

Abstract: A fuel tank cap structure which enables a cover member to be readily attached to a casing body. The fuel tank cap includes the casing body and the cover member that is rotatable in one direction relative to the casing body via a ratchet mechanism when a torque of or above a predetermined level is applied to the cover member. The cover member has fitting projections that are held by an outer ring member of the casing body. The outer ring member has a plurality of slits, which cause the outer ring member to be elastically deformed when riding over the fitting projections, thereby facilitating the engagement of the fitting projections with the outer ring member.

Abstract: A fuel tank cap structure and method of manufacturing which prevents a parting line formed on a cover member in the process of injection molding from being undesirably shaven. The fuel tank cap includes a casing body and a cover member that is rotatable in one direction relative to the casing body via a ratchet mechanism when a torque of or above a predetermined level is applied to the cover member. The cover member has fitting projections that are held by an outer ring member of the casing body. A slide mold is used for manufacturing the cover member having the fitting projections that are undercut in the injection molding. This causes a parting line to be formed on a top wall of the cover member. Anti-shaving projections formed at substantially the same height as that of the parting line prevent the parting line from being slid against the outer ring member and shaven.

Abstract: A fuel tank cap which enables static electricity to be discharged quickly and stably when the user manually touches a fuel tank cap to open or close the cap. The fuel tank cap has a casing body and a cover member with four discharge projections for discharging static electricity to a filler neck of a fuel tank. The four discharge projections are arranged in a third radial direction that has an angle of 45 degrees with respect to both a first radial direction and a second radial direction. The first radial direction, in which a handle member of the cover member is arranged, gives the maximum contraction of the cover member, whereas the second radial direction gives the minimum contraction of the cover member. The four discharge projections are arranged on a circle about the center of the cover member to reduce the effect of resin contraction.

Abstract: A closure device for a vehicle tank filler neck, which has a shut-off valve (21) provided with an actuating device (22) and which terminates in a recessed area (8) of the vehicle body (9), which can be covered by means of a body flap (10), wherein the body flap (10) has a drive device (23) which is controlled by the actuating device (22) via a unidirectional control path.

Abstract: A fuel cap structure which enables part of a flange member to be readily broken when an external force is applied via a cover member in any direction. A fuel cap includes a casing body and a cover member attached to the flange member formed on the upper portion of the casing body. The flange member includes a joint member to join the upper portion of the casing body with an outer ring member, in which the cover member is fitted. The joint member has fragile portions including notches. Each fragile portion starts a break of the joint member when an external force is applied to the flange member via the cover member in a variety of directions.

Abstract: A vent apparatus of a fuel tank comprising a housing having a through-hole at the bottom communicating with a fuel tank; a valve body mounted on the housing, having a flange, vent slots and a partition wall; a lower cover mounted under the valve body, having a through-hole communicating with the through-hole of the housing and the lower space of the valve body; a ball for opening and closing the through-hole of the partition wall of the valve body; a pushing weight mounted on the upper compartment of the valve body, having a protrusion formed on its bottom to prevent adhesion of the ball to the partition wall of the valve body; and an upper cover positioned on the top of the housing, having a plurality of outlets around its periphery.

Abstract: A permanent closure for fuel tanks mounted to an access door (28) with a hinge (30) connected to a vehicle, having an extended housing (22) which contains a rubber gasket (14) on the interior base, a spring (16) and a slideable internal fuel cap (24) Which meets EPA specifications. When the hinged access door (28) is in a closed position, a filler tube (20) on the vehicle enters a hole (10) in the extended housing (22) which meets the internal fuel cap (24) and an o-ring (12). A seal is obtained by closing the hinged access door (28) which presses the internal fuel cap (24) and the o-ring (12) against the filler tube (20), and into the rubber gasket (14) at the interior base of the extended housing (22). A locking pin (26), contacting a notch in the extended housing (22), insures the access door (28) remains closed, thus providing a continuous seal, and when released by a latch in the passenger compartment, maintains a seal, yet the spring partially urges the hinged access door (28) open.

Abstract: A fuel cap tester kit containing a plurality of fuel cap adapters, wherein each adapter has a mouth opening, outer rim, cap receiving chamber, air supply passageway and a fuel cap connection opening and with each fuel cap opening being configured to engage and retain a different and specifically configured fuel cap, and wherein each adapter is also provided with a threaded base connection that cooperates with a complimentary threaded connection on a test base that is fluidly connected to a pressure source and tester apparatus and wherein the base connectors of each adapter are configured alike so that each adapter can be connected to the single threaded connector in the test base to permit testing of different size fuel caps dependent on the adapter threaded into the test base, where the tester kit is used to decide upon quality of fuel caps under test by determining a leakage rate of pressurized air from the cap-receiving chamber through the mouth opening.

Abstract: A removable fuel cap for use in a quick-fill refueling system for a motorcycle during a motorcycle race. The fuel cap comprises a movable plunger in a cylindrical windowed housing, the plunger being normally held in a closed position by a coil spring. The cylindrical housing and plunger assembly is inserted into the fuel tank opening and is held in place by a threaded retaining cap that screws onto the threaded gas cap flange. The retaining cap has a circular opening that allows access to the plunger. The fuel cap works in concert with commercially available quick-fill fuel containers. The quick-fill fuel cap is easily and quickly removed by unscrewing the retaining cap and removing the plunger assembly.

Abstract: A fuel filler pipe valve assembly having a valve member with a partially substantially spherical portion pivotally disposed in a valve receptacle of a housing member, the valve member having a passage with an inlet opening and an outlet opening, and the housing having an inlet opening coupled to the fuel filler pipe and an outlet opening coupled to a body panel. The valve member is pivotal in the valve receptacle to open and close the fuel filler pipe. The valve member is formed of a valve shell portion and a valve cover portion, and the housing member is formed of a housing shell portion and a housing cover portion. A rotatable drive gear disposed through the housing member is engagable with a gear member on a truncated portion of the valve member to pivot the valve member in the housing member.

Abstract: A device for robotizable refuelling of a vehicle includes a docking component which can be installed on a filling tube of a fuel tank of the vehicle for receiving a pistol nozzle, in which the pistol nozzle can be locked, in axial and peripheral directions, and which has a central passage for a fill pipe of the pistol nozzle. The device contains a hollow cylindrical ring carrier element provided with a central passage fastened on an underside of the docking element. A locking ring provided with radially projecting bayonet arms is held against torsion but axially moveable on the ring carrier element. A compression spring is braced between the underside of the locking ring on the one hand and a connection of the ring carrier element. The device can be installed on the edge of the filling tube, which is provided with recesses for passage of bayonet arms of the locking ring at an inlet side to form a bayonet lock.

Abstract: A lockable fuel cap is provided including a closure member having a drive tooth and a removal hub. The hub includes a drive lug and moves between a lock position in which the drive lug is spaced-apart from the drive tooth and a release position in which the drive lug engages the drive tooth. An outer shell is also provided and includes an interior wall defining a guiding slot to receive the drive lug and guide movement of the removal hub between the two positions. The shell is drivingly coupled to the hub so that the member remains stationary upon rotation of the shell when the drive lug is in the lock position. The member rotates upon rotation of the shell when the drive lug is in the release position.

Abstract: A tank cap with a lock of a fuel tank comprises: a gasket member (2) for sealing a fuel supply port of the fuel tank; an locking member (3) arranged in a periphery of the fuel supply port; and a slider (4) arranged between the gasket member and the locking member. The slider (4) moves in conjunction with the gasket member, in such a manner that the locking member is prevented from moving in the transverse direction when the gasket member moves in a closing direction in which the gasket member comes close to the locking member, that the locking member is capable of moving in the transverse direction when the gasket member moves in a separating direction in which the gasket member is separate from the locking member, and that the locking member is maintained in a maintaining state in which the stopper is kept intruded into the moving passage of the locking member, even if the gasket member moves in the separating direction, when the locking member is prevented from moving in the transverse direction.

Abstract: A filler cap assembly includes a sleeve welded to a tank wall, and a non-indexing filler cap. The cap is formed with top and bottom members, each member having an outwardly bevelled surface opposing a corresponding surface on the other member. An elastic O-ring is positioned between the two surfaces. The top member and base member are held together by an axially extending shaft, with a spring biasing apart the two members. The shaft is connected in a hinged manner to a cam lever. Activation of the cam lever brings the two opposing surfaces together, forcing the O-ring outward to form a seal with the sleeve. The filler cap and the sleeve's inner wall are provided with additional features which maintain the filler cap in the sleeve.

Abstract: A fuel door assembly comprises a housing having an open main compartment, a door covering the main compartment when in a closed position with respect thereto, and a push-push lock engagable with the door by means of a latch on its inner surface. The push-push lock is reciprocatingly operable between a first fixed position and a second fixed position. When in the first fixed position, the push-push lock holds the door in a completely closed condition. When in the second fixed position, the push-push lock holds the door in a partially opened condition, so that it may be grasped manually and moved to a fully opened condition. The fuel door assembly satisfies the styling desire for a flat hidden door lacking a finger opening, but at lower cost than that associated with a cable or electrical solenoid opening mechanism. The fuel door assembly further will not fly open if accidentally activated, such as by equipment in a car wash.

Abstract: A filler neck closure cap includes a closure body, a handle coupled to an axially outer flange of the closure body, and an O-ring sealing gasket carried on an axially inner end of the closure body. The cap further includes closure retainer apparatus appended to a middle portion of the closure body to lie in fixed immovable relation to the middle portion. The closure retainer apparatus is configured to engage the filler neck to block removal of the closure body from the filler neck upon installation of the cap in the filler neck.

Abstract: A jerrycan holds liquid fuel. A cap for the jerrycan includes an air vent valve assembly having an umbrella-shaped check valve. The check valve is sensitive to a pressure differential between an interior of the jerrycan and the atmosphere. As fuel is dispensed from the jerrycan, a volume of an air chamber within the jerrycan increases, thereby decreasing the pressure in the jerrycan and creating a vacuum. The vacuum causes the rate at which fuel is dispensed from the jerrycan to decrease. The check valve dislodges when the pressure within the jerrycan becomes less than the pressure of the atmosphere and additional air is introduced into the jerrycan. The air fills the expanded volume of the air chamber, thereby increasing the pressure, eliminating the vacuum and causing the rate at which fuel is dispensed to increase.

Abstract: A method of seal locking together a preformed plastic molded top lid portion of a gas filler cap to a preformed plastic molded threaded base portion of a gas filler cap. The preformed top lid portion of the gas cap is locked to a stationary preformed threaded base portion of a gas filler cap by spin welding a lower extending tab of the top lid portion into a mating channel in the base portion together. The tab can be a circular rectangular tab having a step down inner edge and an indentation cutout on the lower surface of the lid portion between the tab and an exterior side wall of the lid portion, wherein the indentation cut-out provides a sacrificial break point upon impact and allows the exterior side wall of the top lid portion to break-off without breaking the locking seal between the tab and the channel for reasons of safety upon impact. The channel can be a circular with an angled inner wall.

Abstract: A fuel cap is provided for use in the filler neck of a tank. The fuel cap includes a filler neck closure member, a handle engaged to drive the filler neck closure member, and a torsion spring coupled to the handle and to the filler neck closure member.

Abstract: A cap is provided for use in the filler neck of a tank. The cap includes a handle, an o-ring sealing gasket, and a closure body including an upper body portion coupled to the handle and a lower body portion rotatably coupled to the upper body portion for rotation about an axis of rotation. The o-ring sealing gasket is mounted on the lower body portion for movement therewith.

Abstract: A gas cap assembly for use on an automobile having a pivotable gas filling port access door is provided wherein access to the filling port of the automobile's gas tank is automatically provided upon pivoting of the access door. The gas cap assembly includes a body unit that is adapted to be sealingly engaged about the filling port of the fuel fill tube associated with the gas tank and which includes a central opening for receiving a gas filling nozzle; a cover member that is movably attached to the body unit between a closed position in which the cover member is sealed against the central opening and an open position wherein direct access to the central opening is provided; and an arrangement for interconnecting the cover member with the pivotable access door such that opening of the access door automatically shifts the cover member from its closed to open positions. A spring arrangement is provided to bias the cover member towards the closed position.

Abstract: Tank closure, especially for a motor vehicle, with a supporting part mounted on the tank in the peripheral area of a filling opening and receiving an actuating element which is rotatable around an axis that is approximately parallel to the central axis of filling opening. The actuating element is rotatable manually and/or by a filling arm of an automatic filling device into an open position that opens filling opening and in the opposite direction into a closed position that closes filling opening. A closing part guided approximately rectilinearly is located between supporting part and actuating element. The closing part is adjustable through an adjusting device by actuating element which opens filling opening when rotated to the open position, and which closes filling opening when rotated to the closed position.

Abstract: A fuel cap and filler neck fitment for receiving the fuel cap. The fuel cap includes an outer member and an inner closure assembly with seal. The cap and fitment both include lugs which interengage when the cap is moved into a closing position to pressurize the seal determined by an improved overriding ratchet arrangement. During removal of the cap, the outer member moves against a spring action for a predetermined arc before the inner closure assembly is moved to disengage the seal. When the seal is disengaged, the spring action takes up the relative motion. Once removed, the cap is retained by an improved tether assembly. The outer member is connected to the inner annular assembly by an improved structural arrangement which allows the outer member to separate under crash impact.

Abstract: A valve for venting a container has a valve housing with an annular chamber. A ring member with a first axial and a second axial end is arranged in the annular chamber. The ring member has a first sealing lip at the first axial end and a second sealing lip at the second axial end. A first channel and a second channel extend axially along the ring member for venting the container. The first channel vents in a first direction and the second channel vents in a second direction opposite the first direction. The first sealing lip closes off the first channel such that the first sealing lip and the first channel function as a relief valve. The second sealing lip closes off the second channel such that the second sealing lip and the second channel function as a relief valve.

Abstract: A filling system for robot-capable filling of a motor vehicle with fuel has a filler nozzle and a tank filler neck, with a docking extension provided with a central opening being provided on the neck on the filling side of the vehicle. The extension is rotatable by an upper section around the axis of symmetry to open and close a tank closure. The filler nozzle is dockable by its outlet end to form a positive connection between the filler nozzle and the docking extension. When the filler nozzle is ready for filling, positive elements distributed around the circumference of the filler nozzle and the docking extension mesh positively with one another. In order to achieve a simple docking of the filler nozzle on the filler neck of the vehicle fuel tank for a filling that is always functionally reliable and unimpeded, the positive elements of one docking partner are radially movable and actuatable in the radial direction fluidically, and the positive elements of the other docking partner are rigid.

Abstract: A string-attached cap is formed by connecting one end of a belt-shaped coupling member to a cap. In the string-attached cap, the coupling member is made of flexible resin, and has a ring as its part at one end, and the ring has an engaging part which is the inner periphery of the ring, the engaging part being slidably engaged with an annular groove formed in the outer periphery of the cap.

Abstract: A self-closing cap for the fuel filler neck of a vehicle is provided which is particularly adapted for use with an automatic gas filling machine. The cap comprises a closure ring having an annular body and screw threads or bayonet lugs for detachably mounting the periphery of the annular body around the open end of the filler neck, and a closure flap assembly formed from a circular member with a nozzle receiving opening, a closure flap spring biased over the opening, and a pivotal mounting connecting the flap over the opening. The closure flap assembly includes a locking ratchet mechanism for securing the circular member over the closure ring in a selected angular position such that the pivotal mounting is substantially 180.degree. opposite from the pivotal connection of the restrictive flap within a filler neck of a vehicle to allow a fuel nozzle from an automatic gas filling machine to be smoothly inserted into and withdrawn from the self-closing cap.

Abstract: A fuel port sealing apparatus for closing and sealing a fuel port carried within a recessed chamber of a body of a vehicle. The sealing apparatus includes an access door having an edge hingedly coupled to the body adjacent the recessed chamber and movable between an open position and a closed position, and a sealing member coupled to the access door and orientable to match the tilt of the fuel port as the access door is closed.

Abstract: A cap is provided for use in the filler neck of a tank. The cap includes a closure mechanism for closing the filler neck and a handle mechanism for rotating the closure mechanism relative to the filler neck to a sealed position engaging the filler neck and establishing a sealed connection between the closure mechanism and the filler neck. The cap also includes a delayed actuation mechanism for providing a lost-motion driving connection between the handle mechanism and the closure mechanism and an indicator mechanism for providing an indication of sealed closure of the filler neck upon movement of the closure mechanism in the filler neck to its sealed position. The indicator mechanism includes an indicator affixed to the delayed actuation mechanism and the indicator is a reflective member visible to a user of the fuel cap.

Abstract: An apparatus is disclosed for interrupting operation of a starter of an alternatively-fueled motor vehicle. The apparatus comprises a fuel receptacle, a cover and a switch. The fuel receptacle has an electrically conductive, grounded fill opening. The cover mates with the fill opening of the fuel receptacle, and has a contact sensor which generates a ground signal indicative of contact between the cover and the fill opening. The switch communicates with the contact sensor and with the starter, and interrupts operation of the starter when no signal indicative of contact is received from the contact sensor.

Abstract: A closure for a fuel tank filler pipe comprises a body carrying a seal at one end for engagement with an outer end of the filler pipe, an outer cover, and a latch member at the other end of the body coupled to the cover and having latching projections for engagement with complementary formations on the filler pipe. A spring biases the latch member towards the outer cover so as to urge the seal into engagement with the end of the filler pipe when the latching projections on the latch member are in engagement with the complementary formations on the filler pipe. The connection between the latch member and the outer cover allows a predetermined range of angular movement of the outer cover relative to the latch member in the unlocking direction before unlocking commences.

Abstract: A reservoir for automotive vehicles comprises first baffles concentrically arranged inside a cap and having different diameters, and second baffles concentrically arranged inside a filler port of the reservoir and having different diameters, the second baffles being concentric with the first baffles. The first and second baffles are disposed alternately. The second baffles are formed with a communication port for allowing fluid communication in the reservoir.

Abstract: A cover assembly for a container includes: a cylinder base body with an axial bore therethrough, a lower portion for engaging an entry of the container, and an annular flange extending inwardly and radially into the axial bore; a shield mounted on an upper portion of the base body and having a central opening aligned with the axial bore of the base body; and a valve unit including a coil spring provided within the axial bore and placed on the annular flange, a hollow cylinder-shaped valve seat provided axially in the axial bore of the base body and inserted into the coil spring such that the valve seat can communicated with the container. The valve seat has an outwardly and radially extending press member which is biased by the coil spring toward the shield, and a blocking valve with a spherical external face and an axial hole extending therethrough.

Abstract: A power gas tank cover including a motor, a collar including an annular portion, a tubular portion formed at one side of the annular portion and having a hole communicated with an opening of the annular portion, a recess between the annular portion and the neck portion, and an inclined track on an inner side of the neck portion, a worm shaft inserted into the tubular portion and connected with the motor, a sleeve fitted in the inclined track, an inner jacket being a cone-shaped member with a first orifice, an outer jacket rotatably fitted on the inner jacket and provided at a lower portion with a worm gear meshed with the worm shaft, a pressure relief valve arranged on a top of said inner jacket, and a transmission shaft pivotally connected with the outer jacket at an end and with a gas tank door at another.

Abstract: A vent-valve assembly is provided for use in a filler neck fuel cap. The vent-valve assembly includes a valve housing, a vacuum-relief valve subassembly which is spring-biased within the housing to channel ambient air and fuel vapor through the valve housing, and a pressure-relief valve subassembly which rides upon the vacuum-relief valve subassembly. The vacuum-relief valve subassembly includes a vacuum-relief spring and a vacuum-relief valve. The vacuum-relief valve has a valve member which rests upon the vacuum-relief spring and guide legs which depend from the valve member around the vacuum-relief spring. Flanges or feet extend out from the guide legs and engage the valve housing when the pressure-relief valve subassembly is removed from the housing. Thus, the valve housing and vacuum-relief valve cooperate to form an easy-to-assemble, self-contained, vent-valve assembly.

Abstract: A closure assembly for a filler neck having a mouth and an inner mounting flange coupled thereto, wherein a closure for the mouth of the filler neck is provided with a body and an inner retainer fixed to the body. The inner retainer having a rigid portion and a cantilevered flexible portion and wherein rotation of the closure initially causes the rigid portion of the retainer to engage the flange so that the closure member is retained by the flange and continued rotation causes the cantilevered flexible portion to be deflected axially downward with respect to the axis of rotation of the closure, without radial movement toward the axis of rotation and to subsequently release the flexible portion to allow the flexible portion to move back to a undeflected position where a detent on the flexible portion enters a notch in the inner mounting flange to restrain relative rotation between the flange and retainer.

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.]. .Iadd.cap .Iaddend.is also provided with a restraining mechanism located between the push top and the fill passageway .[.seat.]. .Iadd.seal .Iaddend.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.]. .Iadd.member .Iaddend.for closing the mouth of the filler neck. This closing .[.means.]. .Iadd.member .Iaddend.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.]. .Iadd.a mechanism .Iaddend.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: 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.