Abstract: This invention relates to a filler cap, particularly for automobile vehicle gas tanks, which comprises a hinged flap coupled with a lockable closing element, wherein the flap and the closing element are coupled together in such a manner as to give way when an effort exerted on the flap reaches a certain threshold.

Abstract: A cap is disclosed for closing an aperture having a camming surface extending axially inwardly about its periphery. The cap includes a first body portion having a diameter larger than the aperture and a second body portion having an outer diameter smaller than the aperture. A gasket is disposed adjacent the first body portion. A first slot extends diametrally through the second body portion. Second and third chordal slots extend partially through the second body portion and are parallel to the first diametral slot. The first, second, and third slots define first and second parallel lever arms. Each lever arm includes a portion extending radially beyond the outer diameter of the second body portion to engage the camming surface of the aperture.

Abstract: A safety plastic filler neck for an automobile, vehicle, etc., that functions both to control the screwing torque and to prevent the fuel leakage from filler port through releasing a cap separable from the screw body. The screw body includes a flange disposed on its top portion, engaging/disengaging teeth formed at several locations along its outer circumference by extending the flange, a circular standing edge provided on the flange, latching teeth formed at several locations along the outer circumference of the circular standing edge which are to be latched in screwing direction, and incisions provided under the latching teeth and corresponding to them. The cap includes a rotation flange disposed on top of it, a round cover edge for covering the circular standing edge and the engaging/disengaging teeth of the screw body, latches formed on upper inner surface of the round cover edge, and an anchoring groove formed in lower inner surface of the round cover edge.

Abstract: A fuel tank, preferably made of plastic material, to the filler neck of which an attachment base for a cap is so secured that dimensional tolerances as also dimensional changes caused by differing coefficients of temperature can be compensated by an elastic seal which is axially clamped therebetween; the attachment base is thereby axially supported against an abutment surface of the filler neck by means of an annular shoulder by way of an interposed elastic sealing means.

Abstract: A filler cap assembly including a filler cap and an adapter member for attachment to the opening in a fuel tank. The adapter has a central opening therein for receipt of the filler cap. The inner periphery of the adapter about the central opening has a raised convex seat and the cap has a flanged outer periphery with the undersurface grooved to form a concave surface mating with the raised seat of the adapter. The cap also includes seal means along the concave surface of the flange for sealing against the seat of the adapter.

Abstract: An O-ring for providing hermetic sealing between a fuel tank filler neck and its cap has a single main body with an integrally formed annular lip projecting outwardly from the main body; the lip has an inclined lower surface for contacting a corresponding inclined upper surface of said filler neck, such lower surface defining an angle of inclination .theta..sub.1 with respect to the horizontal principal extent of the O-ring body, the filler neck upper surface defining an angle of inclination .theta..sub.3 with respect to horizontal, .theta..sub.1 being substantially less than .theta..sub.3, the lip being deformable upon tightening of said cap to bring the lip lower surface into hermetically sealing contact with the filler neck upper surface.

Abstract: A fuel cap assembly has a handgripping cover portion, a threaded closure portion and a ring portion. The ring portion has an inwardly facing lip for axially supporting the closure and a flexible skirt depending from the inwardly facing lip and terminating in an outwardly facing lip. The inwardly facing lip flexes outwardly during assembly of the closure into the ring and the skirt flexes inwardly during assembly of the ring and closure into the cover. An annular groove is formed in the cover at a location aligned with the outwardly facing lip such that the skirt can assume its unflexed position and thereby secure the fuel cap assembly.

Abstract: A fuel cap has a cover-handgripping portion and a threaded closure portion, which portions are maintained in assembly by a ring member. The ring member has integrally molded therewith a plurality of outwardly extending flexible fingers in a hinged relationship. The closure portion is inserted in the ring member prior to assembly within the handgripping portion. At assembly, the fingers of the ring member pivot inwardly at the hinge position to become engaged with an annular groove formed in the handgripping portion. The movement of the fingers results in an inner portion of the ring member being displaced to form a support shelf for the threaded closure. Engagement of the fingers with the groove portion of the handgrip prevents removal of the ring and therefore the closure member from the handgripping portion.

Abstract: A fuel cap has a valve structure for controlling both superatmospheric and subatmospheric pressures in a fuel tank. The valve has a plate or flat disc member with two apertures formed therein. A grommet is secured in each aperture. A pair of resilient valve stems are formed integrally with and on opposite sides of the plate. Each valve stem is disposed to have an end thereof operably positioned with respect to the grommet to seal the respective aperture to provide control of the pressure level in the fuel tank. One valve stem will flex to vent superatmospheric pressure and the other valve stem will flex to vent subatmospheric pressure. The plate is secured or otherwise formed integrally with the closure portion of the fuel cap.

Abstract: In order to place a sealing cap, which is to be placed in particular on a filler neck of a gasoline tank, on the neck so as to preserve the seal with little actuation force but so that it seals securely, the sealing cap is equipped with a turning lifting apparatus (24, 43) which effects a pressing of the sealing ring (4) at the free neck end (5) when the turning stop (26) of the sealing cap encounters the counter stop (27) of the filler neck (1). A pressing member (23) is displaced in the axial direction against the resistence of a compression spring (25) in the turning stop (26) via the turning lifting apparatus and simultaneously moves a radial outer collar which is coupled with the turning handle (2) in the displacement direction and which is contacted by the sealing ring (4) against the free neck end (5), whereby the sealing ring is pressed together. By means of an indicator window (54) one can read off the fully closed position of the sealing cap with certainty.

Abstract: A seal cap, particularly for fuel tanks, is provided, having a body comprising a cylindrical prolongation directed toward a fuel tank spout, in which fits a wing supporting element, such wings travelling along a helicoidal gradient located inside the spout, a seal gasket preferably being welded between a shoulder of the element and the lower edge of the cylindrical prolongation, and a U-shaped ring being pushed against the gasket by a spring means which rests upon the inner side of the cap.

Abstract: An improved lock for a filler cap having a cover adapted to be received within the tank opening with a retaining member connected at the lower face of the cover for cooperating with the wall of the opening to fasten the cap within the opening; the lock is mounted in the cover and extends downwardly toward the retaining member and the retaining member has cooperating means engagable with the lock when the retaining member is in the fastened position. The lock and the cooperating means prevent movement of the retaining member from the fastened position.

Abstract: A cap for a liquid containing vessel has redundant tang portions for engagement with closure ramps of a host tank access filler tube. Sealing engagement between the cap and the filler tube cap retention ramps is enhanced through the utilization of pitched guide surface inclines on one of the tang elements.

Abstract: A capping assembly for use in a fuel storage tank provided for a motor vehicle and the like includes a diaphragm positioned inside the assembly so as to divide an internal space into two spaces. One space communicates with the inside of the tank and is separated from the other space which communicates with the outside of the tank. The assembly further includes a valve arrangement, comprising a needle valve and a valve seat, which cooperates with the diaphragm so that the two spaces can be selectively communicated with each other in response to a relative change of pressure inside the tank with respect to a predetermined pressure.

Abstract: A filling connection for vehicles driven by internal combustion engines, which is fastened in an opening of the car body and has one section disposed on the inside of the car body adapted to be connected to a line leading to the fuel tank, while a section disposed on the outside is provided with an inner or outer thread onto which a lid may be screwed, and an axially effective sbaling is arranged between the lid and the section disposed on the outside.

Abstract: A tank closure, especially for a tank of a motor vehicle, with a bayonet cap having a pair of tension clamps. The tension clamps, during a rotation of the cap, are axially displaceable through the bayonet-type thread at the tank neck and are urged against the thread by a helical compression spring. The spring rests on a bracket of a closing pipe guided in a housing of the cap and joined thereto so that the spring urges the closing pipe, especially a flange associated therewith and covered with a sealing ring of rubber or the like, elastically resilient material onto an annular sealing surface of the tank neck. A self-lubricating synthetic resin spacer sleeve, that is, a sleeve which readily slides on metal, is inserted between the flange of the closing pipe and the pair of tension clamps.

Abstract: A fuel cap has a pair of poppet type valves which control the pressure level within the fuel tank. Each valve member has a seat portion and a valve stem guide portion formed integral with the threaded closure member of the cap. A conical valve member having a longitudinally extending stem is positioned on the valve seat and in the stem guide by a spring member. The valve which controls the maximum pressure within the fuel tank is operable to permit very high gas flow rates.

Abstract: A fuel cap assembly 10 includes a fuel cap 14 rotatably mounted on one end 28 of a tether 16 which has a second end 36 rigidly secured to a motor vehicle 12. The tether 16 is sufficiently stiff to suspend the gas cap away from the vehicle panel 26 when the cap is disengaged from the spout 18.

Abstract: Motorcycle has a fuel tank formed with a fueling port which is closed by a filler cap. The filler cap comprises an outer and inner cap discs which are adapted to be engaged respectively with an outer and inner cap seats so as to define a buffer chamber between the cap discs. A vent hole is formed to open the inside of the tank to the buffer chamber which is in turn connected with a canister containing activated carbon particles. The buffer chamber functions to receive liquid fuel when the motorcycle is turned over and prevent the liquid fuel from passing to the canister.

Abstract: A locking cover for a pipe connection having an inner member with a radial sealing flange detachably locked with an overlapping outer cap by means of a locking mechanism. The locking mechanism comprises engaging projections, extending radially inward from the wall of the cap, which in turn includes a guide surface directed inward as well as a connecting surface to engage the sealing flange. The connecting surface is bent in a convex or arcuate shape from the radial inner end of the guide surface to the wall of the cap. Thus, the sealing flange lies with its edge on the connecting surface. In this way the outer cap can spring loose when force of a given magnitude is exerted upon the inner member without breaking the locking mechanism.

Abstract: A fuel tank cap comprising a cover, a bracket, an annular sealing member disposed around a cylindrical portion of said bracket, an annular retainer sandwiched between said cover and said annular sealing member, and an annular gasket sandwiched between said bracket and said retainer, the outer surface of said annular retainer being substantially coextensive in shape with the outer surface of said gasket, and one of the peripheral edge portions of said gasket having a projection held in locking engagement with said annular retainer.

Abstract: A sealing cap has an external cover section of external diameter greater than a circular sealing face about an opening. An internal cover projects into the opening, and a tightener is provided. A diametral handle is molded on the external cover section and has a U-shaped stirrup with two legs connecting it to the external cover section, and a wall extending along the center of the stirrup and connecting it to the external cover section. The improvement of the invention is that each cover section is made as a one-piece molding, and the legs of the stirrup are spaced by not less than the external diameter of the cover section sealing face, and the length of the wall, longitudinally of the stirrup, is less than the internal diameter of the cover sealing face.

Abstract: A threaded cap for sealing an automotive vehicle fuel tank is provided with a unitary molded central plastic core and a bonnet rotatably mounted on the plastic core. A pair of concentric races are defined on the plastic core. The inner race carries a unitary molded plastic frame which has a pair of resilient, closely spaced transverse cantilevered arms defining a gap therebetween. The frame is also provided with a resilient catch. A unitary molded plastic bolt is reciprocally movable along the gap to engage and disengage the core for rotation with the bonnet. The bolt has two detents which coact with the catch on the frame to hold the bolt at selected unlocking and locking dispositions of movement. The bolt includes a stud which projects into the gap between the arms so that the arms spring bias the bolt toward the locking disposition. A lock mechanism is used to shift the bolt to an unlocking disposition so that the fuel cap be disengaged from the fuel tank inlet pipe.

Abstract: In a sealing cap for fuel tank pipes of motor vehicles with an outer cap (10) and an inner cover portion (12), the outer cap (10) has, at its inner side, a rib (36), made of synthetic material, which bears at least one radial lug (38) at its open end to serve as connection with the inner cover portion (12). In order to obtain a secure, torsion-proof connection between the outer cap (10) and the inner cover portion (12) during normal use and in order to facilitate a snapping off of the outer cap (10) in the case of motor vehicle accidents, the strength of the lug (38) is calculated to be low, and the torsion-proof connection between the outer cap (10) and the inner cover portion (12) is achieved by a separate positive-locking coupling (56, 58).

Abstract: A fuel tank cap includes a ball cage centrally depending from a fuel tank cap body, said ball cage having a plurality of tank neck engaging balls located in a plurality of side openings through which the balls are selectively urged. A plunger cone within the ball cage is slidable between a first position where it urges the aforementioned balls outwardly for locking the cap to the fuel tank neck, and a second position allowing inward movement of the balls within the ball cage and removal of the cap from the fuel tank neck.

Abstract: A Conversion ring is provided for externally flanged mouths of tanks having two distinct locking means, one serving to prevent any axial displacement of the ring in relation to the filler mouth and the other for preventing any rotation of the ring once the latter is placed on the mouth. Both locking means cooperate with the external flange. The conversion ring provides security both as regards the sealing of the tank and as an anti-theft device.

Abstract: A locking device for a tank having a spout and a cap attached to the spout, the device including a main body having a first and second hinging portion. The first and second hinging portions are hingedly connected with each other and have corresponding mating surfaces surrounding a depression whereby when the mating surfaces are in contact the depressions form a cavity. The cavity completely encompasses the cap and a portion of the spout including a split ring that is firmly engaging the spout. The split ring being firmly attached to the spout and within the cavity prevents a thief from pulling up on the main body to frictionally engage and twist the cap off by engaging the inside edge of an inwardly extending flange of the main body while the main body is being rotated. The cavity is also tall enough to prevent a thief from pushing down to frictionally engage the cap with the main body. A lock securely holds the first and second hinging portions in a closed position.

Abstract: An anti-theft cap for closing a filler pipe of a vehicle fuel tank is provided having a body shaped to locate within the end of the filler pipe and a cover portion having sealing means to engage the end of the filler pipe. A cylinder lock mounted in a bore of said body serves to lock and unlock the cap. A carrier member is connected to said cylinder lock so as to rotate therewith between a locked position and an unlocked position. Two conduits are formed in said body diametrically opposite each other and each have one end at a surface of said body and the other end at another surface which other end communicates with the interior of the filler pipe when the cap is in position thereon.A first valve carried by said carrier member communicates at one end thereof with the atmosphere and at the other end thereof with said one end of its respective conduit when said carrier is in said locked position, whereby vapor from the tank may be vented when the pressure in the tank exceeds a predetermined value.

Abstract: The gasoline pump clip cap is a novel gas cap which has a "C"-shaped clip incorporated into its design. It serves two purposes: it seals the opening of an automobile gas tank filler pipe like a standard gas cap, and the integral clip can be temporarily installed onto the handle of a gas pump to hold the gas pump handle trigger in the on position. The gasoline customer can release the manual pressure on the trigger while using the clip to maintain the gas flow, thus allowing him to attend to other automobile maintenance chores in the time saved.

Abstract: A snap together fuel cap wherein a closure member is maintained between a cover portion and a skirt portion. The cover and skirt portions are secured together through cooperating axially facing surfaces formed on locking tab members. The tabs on the skirt have a predetermined width which is slightly less than the distance between adjacent protruding surfaces formed on the cover such that after assembly, the end walls on the skirt tabs will engage the edges of the protruding surfaces to limit relative rotation between the cover portion and the skirt portion.

Abstract: A filler tube or hose and filter unit for disengageable attachment to and disposition within a filler pipe and within a communicating storage tank, and having as one component a flexible and reinforced hose, as a second component mounting or disengageable attaching means at the upper end of the hose for cooperation with the filler pipe mouth and for receipt of a closure cap, and as a third component filtering means at the lower end of the hose whereby said hose serves as the conduit for a smooth flow of fuel from the source or pump to the storage tank, and the filtering means serves both to eliminate impurities in the fuel and to aid in preventing sudden backsurge of the fuel from the tank in the event of accidental impact.

Abstract: A break-away gas cap includes an inner member having a central portion adapted to close and seal an opening in gasoline tanks, such as the gasoline fill neck of an automobile, and an outer shell that engages and is carried by the inner member and provides a hand-engaging surface to be used to insert and remove the gas cap. The inner member includes weakened portions between its closure portion and the portions carrying the outer shell to enhance breakage of the outer shell from the inner member in the event of impact, such as an automobile accident, without affecting the closure and seal of the gasoline tank.

Abstract: An arrangement is disclosed for closing the inlet pipe of a container, such as the fuel tank of a motor vehicle. The arrangement includes a cap having a handle portion as well as a fastening and sealing portion. The handle portion is connected to the fastening and sealing portion by a releasable clip connector which becomes disengaged when excessive forces are applied to the handle portion. In addition to or instead of this arrangement, the free end of the inlet pipe and at least the fastening and sealing portion of the cap are surrounded by a protective collar.

Abstract: Resilient O-ring seals for caps for closing vehicle fuel tank filler necks, the fuel caps having shank portions extending into the necks. The radial width of the annular space between the inner wall of such a neck and the outer wall of the shank is less than the radial dimension of the O-ring. Each O-ring includes an annular, radially outwardly facing groove defined by an axially inner lip, an axially outer lip, and a connecting web portion. As the shank with the O-ring thereon moves axially into the neck, the axially inner surface of the inner lip contacts the neck and is urged axially outwardly in a wiping action causing bending of the O-ring such that its radially inner surface is resiliently urged radially and compressively to seal the annular space. In one embodiment, the inner surface of the outer lip contacts the neck as the shank and O-ring are projected further into the neck. The outer lip of the O-ring thereby axially compressively seals the space.

Abstract: A closure cap for a liquid storing vessel or tank which is constructed with a liquid storing tank having a liquid filling port formed in a predetermined part thereof, a mouth piece fitted in the liquid filling port and having an inwardly extending flanged part, a closure cap to be fitted in the mouth piece in the liquid filling port, a sealing member interposed between the lower surface of the closure cap and the inwardly extending flanged part of the mouth piece fitted in the liquid filling port, a ring-shaped raised part formed between the top peripheral edge of the mouth piece and the inwardly extending flanged part thereof, a ring-shaped flat plate part forming a part of the sealing member to intimately contact with the lower surface of the closure cap, a ring-shaped lip part which is integrally joined with the lower part of the ring-shaped flat plate part through a connecting part and which is intimately contacted with a downwardly inclined inner peripheral surface of the ring-shaped raised part defined

Abstract: A fuel tank cap comprising an inner plate having a skirt around its periphery, said skirt having a pair of locking projections provided on its lower portion, said skirt also having a recess extending between said locking projections and formed in said lower portion, an outer plate fixed in overlapping relation to a surface of said inner plate, and an annular gasket mounted on the periphery of said inner plate.

Abstract: A resilient O-ring seal for an annular space between a first radially inner surface and a second radially outer surface. The radial width of the annular space is less than the radial dimension of the O-ring. The O-ring includes an annular, radially outwardly facing groove defined by an axially inner lip, an axially outer lip, and a connecting web portion. The inner and outer lips both include axially inner and outer surfaces. The web portion includes a radially inwardly facing surface and a radially outwardly facing surface. As the O-ring is projected axially into the annular space, the axially inner surface of the inner lip contacts the second surface and is urged axially outwardly in a wiping action. The axially outward wiping movement of the inner lip causes a twisting or rolling of the ring such that the web radially inner surface is urged radially outwardly at its axially inner extent and is urged radially inwardly at its axially outer extent against the first surface.

Abstract: A cap of a fuel tank comprising a lid member constructed of upper and lower plates to form a passage communicated with the air between both plates, a seating plate underlying said lid member and provided with a plurality of bores circularly arranged in the peripheral portion of the central flat field thereof, a diaphragm of a flexible material underlying said seating plate and provided with a perforation in the central portion thereof and an annular ridge surrounding the perforation on the upside thereof, a valve plate underlying said diaphragm and provided with a perforation in register with the perforation of said diaphragm, a casing disposed at the lowest position in the cap and provided with a perforation in the bottom thereof, the peripheral portion of said diaphragm being fixedly interposed between the peripheral portion or said lower plate with intermediation of said seating plate and the flange portion of said casing, and a coil spring held in said casing and adapted to urge said valve plate upwardly.