Radiator Cap Patents (Class 220/DIG32)
  • Patent number: 6076695
    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.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: June 20, 2000
    Assignee: Tesma Motoren-und Getriebetechnik Ges.m.b.H.
    Inventors: Sandor Palvoelgyi, Stefan Feichtinger
  • Patent number: 6073791
    Abstract: The invention concerns a preferably screwable or attachable and twistable closure cap for attaching to a fixed spout, for example of a car radiator, a compensating reservoir in cooling or heating systems or the like, with a screw cap or an attachable and twisting cap and a twistable contact part within which preferably an excess/low-pressure combination valve is concentrically mounted on the cap. The valve has a sealing element which comes into tight contact with the fixed part when the closure cap is fastened. The closure cap, when screwed onto the fixed spout, is prevented from being removed or unscrewed or untwisted by means of a temperature-dependent control element in which the temperature-dependent control element (12) creates a coupling of the cap (2) and the contact part (4) when the temperature is normal and a decoupling when the temperature rises.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: June 13, 2000
    Inventor: Heinrich Reutter
  • Patent number: 6056139
    Abstract: A coolant container cap assembly for use with a coolant container having first and second sealing ridges. The cap assembly comprises an exterior cover for removeably securing the cap assembly to the container. A valve housing member is rotatably secured to the cover and has a lower housing portion and an upper housing portion. A first sealing gasket is mounted to the lower housing portion for selectively engaging and sealing the cap assembly with the first sealing ridge of the container. A second sealing gasket is mounted to the upper housing portion for selectively engaging and sealing the cap assembly with the second sealing ridge of the container. The assembly is characterized by an adjustment device mounted to the upper housing. The adjustment device allows relative movement of the first sealing gasket with respect to the second sealing gasket.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: May 2, 2000
    Assignee: Tesma International, Inc.
    Inventor: Michael Gericke
  • Patent number: 5941407
    Abstract: A safety cap for pressurized containers includes a closure member (2) of the aperture (3) of the container (4) and a grip member (5) having a connecting means (6) with the closure member for removing the closure member from the aperture only when the pressure inside the container is at a preset value. A safety device (7) is adapted to slide inside the closure member (2) from a first position to a second position and vice versa, for activating and disactivating the connecting means as the pressure varies, and seal means (8) between the closure member and at least a first and a second region of the safety device.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: August 24, 1999
    Assignee: De' Longhi S.P.A.
    Inventor: Giuseppe De' Longhi
  • Patent number: 5741069
    Abstract: A radiator cap for closing the filler neck of a vehicle cooling system includes a numerical display assembly embedded in the top surface of the cap. A temperature probe extends from the bottom surface of the cap and is connected to the display assembly, the assembly being powered by a solar cell battery in the cap. Upon securing the cap to the filler neck the temperature probe senses the temperature of the associated cooling system, this information being delivered to the display assembly for conversion into numerical form. The cap enables a user to ascertain the cooling system temperature at the filler neck site.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: April 21, 1998
    Inventor: Kenneth D. Egel
  • Patent number: 5649591
    Abstract: A radiator cap having an integral sacrificial anode inhibits corrosion of metal within the radiator. The radiator cap is placed on the opening of the radiator thereby immersing the sacrificial anode in coolant fluid contained within the radiator. The sacrificial anode is preferentially oxidized, thus providing cathodic protection. The radiator cap is easily removable and allows efficient monitoring of the condition of the sacrificial anode. When the sacrificial anode is depleted it is easily replaced to provide a fresh sacrificial anode.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: July 22, 1997
    Inventor: Michael Philip Green
  • Patent number: 5603425
    Abstract: A vessel for a fluid, the vessel having a filling opening and a cap removably mounted on the vessel for closing the filling opening, the filling opening being defined by a tubular conduit having a vent port located in its wall, the cap including an elongate sealing member which is axially insertable into the conduit, the sealing member carrying a circumferentially extending main seal for providing sealing engagement between axially extending opposed faces of the conduit wall and the sealing member, the sealing member being axially movably mounted on the vessel for axial movement between a first axially static position whereat the main seal resides at an inner location relative to the vent port to sealingly isolate the vent port from the interior of the vessel and to a second axially static position whereat the main seal resides at an outer location relative to the vent port to permit direct fluid communication between the vent port and the interior of the vessel.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: February 18, 1997
    Assignee: Western Thomson Controls Limited
    Inventor: Anthony P. Breeden
  • Patent number: 5570804
    Abstract: A radiator cover has an inner cover, a middle cover and an outer cover. The inner cover has a circular plate with a threaded post, a toothed disk with teeth on the top surface, two gaskets, a serpentine plug, a bolt and a circular washer. The middle cover has a bottom inward flange, two inserted holes on the top surface, a square post, a spring passed by the square post, and a toothed plate with a square hole inserted by the square post. The toothed plate has serrations at the bottom surface of the toothed plate, a cylinder on the top of the toothed plate, and a square hole at the center of the cylinder. The cylinder inserts in the spring. The serrations engage with the teeth. The outer cover has a circular wall and two pins extending downward from the top portion of the outer cover. The pins insert tightly into the corresponding inserted holes, respectively.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: November 5, 1996
    Inventors: Chang-Yao Chang, Chin-Chang Lin
  • Patent number: 5558244
    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.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: September 24, 1996
    Assignee: Unisia Jecs Corporation
    Inventors: Seiji Akaike, Shinichi Komatsu
  • Patent number: 5522456
    Abstract: An overflow arrangement which includes an upstanding fluid retaining wall spaced radially outwardly from and encircling an upstanding externally threaded fillneck on a surge tank or overflow reservoir so as to define an annular channel therebetween. A cap adapted to be screwed onto and off of the upstanding threaded fillneck is provided, the cap having a generally circular-shaped top wall, a skirt depending downwardly from a radially outer periphery of the top wall and a radially outwardly extending flange contiguous with a lower extremity of the skirt to a radial extremity overlying an upwardly facing extremity of the upstanding fluid retaining wall.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: June 4, 1996
    Assignee: Geiger Technic, Inc.
    Inventor: Dieter Valk
  • Patent number: 5381919
    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.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: January 17, 1995
    Assignee: Stant Manufacturing Inc.
    Inventors: Jeffery Griffin, Robert S. Harris
  • Patent number: 5357909
    Abstract: In an arrangement for protecting a cooling system of an internal combustion engine from excessive pressure which cooling system includes a coolant container with a filler mouthpiece with a pressure operated valve mounted on an insert received in the mouthpiece so as to normally close the filler mouthpiece, the mouthpiece has a ventilation opening providing for communication between a gas volume in the coolant container and the filler mouthpiece and including a flow control element which is automatically closed when the coolant container is being filled to permit filling of the container only to the lower end of the mouthpiece extending into the coolant container but is opened by the insert introduced into the filler mouthpiece when the filler mouthpiece is closed. The insert also includes a valve arrangement for controlling the coolant system pressure and various conditions.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: October 25, 1994
    Assignee: Mercedes-Benz AG
    Inventors: Thomas Attinger, Wolfgang Kleineberg, Reiner Bandlow, Burkhard Raabe
  • Patent number: 5306430
    Abstract: The method of removing hot liquid coolant from an internal combustion engine cooling system, which includes a radiator having a by-pass outlet, the method including applying suction to the by-pass outlet to draw a by-pass stream of hot fluid, including hot pressurized gas, from the radiator, thereby to reduce fluid pressure in the radiator; and then opening the radiator for safely removing hot liquid coolant therefrom; The removed liquid may be disposed of or treated in a zone or zones outside the cooling system; and returning the treated coolant liquid may then be returned to the cooling system.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: April 26, 1994
    Assignee: Wynn Oil Company
    Inventors: Patrick L. Dixon, Robert B. Sweeney
  • Patent number: 5269431
    Abstract: A reservoir tank includes a tank body storing an amount of operating fluid and having an inlet, a cap detachably mounted on the inlet of the tank body, a deflector secured to the cap so as to be located in the inlet and having a first passage which is in fluid communication with the atmosphere and a second passage which is in fluid communication with an inner space of the tank body, a diaphragm located between the cap and the deflector and having a slit valve which is set to be opened by a pressure difference thereacross, and an interruption body located between the deflector and the diaphragm so as to oppose to the second passage of the deflector and having a passage which enabling the fluid communication between the second passage of the deflector and the slit.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: December 14, 1993
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shinji Sakata, Toshihiro Nakano, Hitoshi Ichioka, Yasuyuki Hanai
  • Patent number: 5248052
    Abstract: An apparatus for releasing superatmospheric pressure in an engine cooling system when the engine is turned off and maintaining the cooling system at atmospheric pressure whenever the engine is not running is disclosed. The apparatus comprises a radiator cap having an over pressure valve for releasing excess pressure during engine operation and a suction return valve, or coolant recovery valve, for allowing coolant in a coolant recovery tank to be returned to the radiator and cooling system by a vacuum condition within the cooling system. The apparatus further comprises a push rod that penetrates the top of the radiator cap and reciprocates within a vertical sleeve seated in the center of the top of the radiator cap to open the suction return valve when the engine is not running, that is, the push rod is in the down position, and moves into an up position to allow the suction return valve to close, when the engine is running.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: September 28, 1993
    Inventors: Larry L. Mellinger, Larry J. Henry
  • Patent number: 5232115
    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.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: August 3, 1993
    Assignee: Filterwerk Mann + Hummel GmbH
    Inventor: Sascha Bauer
  • Patent number: 5199327
    Abstract: A radiator cap loosening and removal tool includes a generally U-shaped handle pivotally attached to a base, which is in turn fastened to the depending skirt portion of a radiator cap by self-tapping sheet metal screws. An alternative embodiment comprises a U-shaped handle whose legs embrace the skirt of the radiator cap and are pivotally fastened thereto by screws or rivets. Another alternative embodiment comprise a crossbar fastened to the skirt of a radiator cap by threaded fasteners, which serve as pivots for a U-shaped handle.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: April 6, 1993
    Inventor: Robert L. Stevenson
  • Patent number: 5195646
    Abstract: A radiator cap cover that engages a radiator cap to deflect steaming radiator coolant downward and away from a user during overheating of a radiator and unscrewing of the radiator cap is disclosed. Gripping structure conforming to the fingers of a user's hand is provided on the top of the radiator cap cover to aid in unscrewing the radiator cap. Flexible tabs along the interior wall of the radiator cap cover engage the radiator cap.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: March 23, 1993
    Inventor: Ricky L. Robinson
  • Patent number: 5174463
    Abstract: In a closure cap for a container, especially for a vehicle radiator, with an outer part (12), an inner part (16) of cup-shape connected with the outer part and insertable into the opening to be closed, and having an overpressure valve arranged in the inner part for opening and closing a pressure compensation channel running through the inner part (16), which overpressure valve includes an axially movable first valve body (26) which carries a first ring shape substantially radially extending sealing surface (36) biased against a ring-shaped first countersealing surface (48) by a spring urging the first valve body toward the bottom of the inner part (16), the first outwardly directed countersurface (48) is formed by a second valve body (46) movable axially between two end positions, which second valve body has an opening radially inside of the first countersealing surface (48) and radially outside of the first countersealing surface has an inwardly facing second ring-shaped sealing surface (52) and an outwardly
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: December 29, 1992
    Assignee: Blau KG Fabrik Fuer Kraftfahrzeugteile
    Inventor: Konrad Scharrer
  • Patent number: 5169015
    Abstract: A radiator cap including a manually manipulable crown provides an auxiliary vacuum seal for sealing a potential vacuum leak path around a member penetrating through a central aperture of the crown. The member may be a rivet or stud which secures the crown, a bell housing and a discoid spring in an assembled condition. Alternatively, the member may be a vent pin connected to a manually manipulable safety lever. The auxiliary vacuum seal preferably takes the form of a resilient O-ring which surrounds the member and is sealingly interposed between the discoid spring, the member and the bell housing to seal a potential vacuum leak path between the member and the discoid spring.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: December 8, 1992
    Assignee: Stant Corporation
    Inventor: Lawrence H. Burke
  • Patent number: 5148934
    Abstract: A cap for a container such as a gas tank or radiator including a valve built therein. The valve built into the cap works to equalize pressure between that inside the container and the exterior environment. The cap includes a valve subassembly joined with the body of the cap, the valve subassembly functioning to equalize the pressure by allowing ingress or egress of air.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: September 22, 1992
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Joji Kasugai, Hiroyuki Hagano, Norikazu Hosokawa
  • Patent number: 5114035
    Abstract: A vehicle radiator cap for closing a radiator filler neck is disclosed. The radiator cap includes a central rivet for securing a crown, a bell housing, and a discoid spring and having a flared shank permitting free turning of the crown relative to the primary sealing gasket. The cap further includes a pressure spring nested within the bell housing and centered directly above an annular valve seat in the radiator filler neck. The upper turn of the spring nests in the shoulder region of the bell housing and the bottom turn biases a seal support plate against the annular valve seat. The seal support plate has an integrally formed cylinder having a lip which retains a vacuum seal in sealing relationship with the bottom surface of the seal support plate.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: May 19, 1992
    Assignee: Epicor Industries, Inc.
    Inventor: David M. Brown
  • Patent number: 5103878
    Abstract: A flush cap for a vehicle cooling system wherein the flush cap has an inlet through which fresh water enters and an outlet through which dirty coolant leaves. The method employs the flush cap to flush the cooling system of the vehicle. The radiator cap can be adapted to drain a radiator using a hose attached to the outlet of the cap.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: April 14, 1992
    Inventor: Roland A. Cassia
  • Patent number: 5071020
    Abstract: In order to attach a radiator cap 1 by means of a bayonet lock 4, 5 at a radiator neck 2 and to be able herein to install a completely assembled pressure relief valve 35 and vacuum relief valve 40 at the radiator cap 2, a lifting counterpart curved surface 23 is provided so as to be spaced axially from each bayonet engaging curved surface 5. In addition a counterpart cam 26 is at least indirectly connected with each bayonet cam 4, especially if it is manufactured in one piece, which counterpart cam in connection with the lifting counterpart curved surface 23 causes the necessary lifting of the radiator cap 1 counter to the installation direction when the radiator cap 1 is opened. Furthermore, the lifting counterpart curved surface 23 is expediently fastened at plastic part, according to one embodiment of the invention, constituting the stub or neck of a compensation vessel or container 45. This stub is preferably fabricated to form one piece with the vessel 45 .
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: December 10, 1991
    Assignee: Reutter Metallwarenfabrik GmbH
    Inventor: Heiner Reutter
  • Patent number: 5052571
    Abstract: A radiator cap sets on a filler neck of an automotive radiator tank. The radiator cap has an inner cap rotatably connected with an outer cap, a pressure valve operatively connected with the inner cap in such a manner that the pressure valve can move vertically so that the pressure valve opens the filler neck when the pressure within the radiator tank increases up to a predetermined pressure. The radiator cap further includes a coil spring provided between the inner cap and the pressure valve for biasing the pressure valve toward the filler neck. Since the connecting point between the coil spring and the pressure valve is lower than the connecting point between a sealing portion of the pressure valve and the filler neck, a rotating moment which returns the pressure valve horizontally is generated when the pressure valve is inclined, preventing the pressure valve from inclining.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: October 1, 1991
    Assignee: Nippondenso Co., Ltd.
    Inventors: Sumio Susa, Toshio Nagara, Sunao Fukuda, Seiichi Kato, Satomi Muto
  • Patent number: 5042677
    Abstract: A safety radiator cap for radiator providing a safety plate or wire made of shape memory alloy. The safety plate or wire bends downward under ambient temperature. High temperature water in the radiator causes the safety plate to extend out due to the memory characteristic of the alloy, and the safety plate thus presses against the neck of the filling hole.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: August 27, 1991
    Assignee: Industrial Technology Research Institute
    Inventors: Yen-Cheng Chen, Shu-Fahr Chang
  • Patent number: 5036888
    Abstract: A cap for the pipe of an automobile radiator or the like includes a pressure/vacuum valve. The pressure at which the valve opens may be adjusted by an easily operated means permitting adjustment of the compression of a pressure spring, thereby making it possible to reduce the effect of spring tolerances on opening pressure tolerances.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: August 6, 1991
    Assignees: Konrad Scharrer, Josef Weichselbaumer
    Inventors: Konrad Scharrer, Josef Weichselbaumer
  • Patent number: 5011040
    Abstract: A radiator cap assembly has a cap, a tether and a seal member. The seal member is adapted to float upon coolant within the radiator. Upon removal of the cap while the coolant is in an elevated temperature and pressure condition, the seal member will cover the fill tube to prevent liquid from exiting the radiator.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: April 30, 1991
    Inventor: Leonard L. Kinast
  • Patent number: 4927049
    Abstract: A thermally locking radiator cap for fitting on the filler neck flange of an automotive radiator, which prevents the radiator cap from becoming detached from the filler neck flange when the radiator is hot. The cap uses a bi-metallic strip captured on the top surface of the radiator cap and having an end which goes through the opening of the radiator cap and engages the filler neck flange to lock the cap in place. Colors are placed on the bi-metallic strip adjacent to a window at the top of the radiator cap so that when the bi-metallic strip moves as a result of expansion, the colors change to indicate that the cap is either locked or free.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: May 22, 1990
    Inventor: John Giordano
  • Patent number: 4872584
    Abstract: The present invention concerns a safety device for a radiator cap detachably mounted on a fluid supply opening for closing the radiator opening. The safety device comprises a lock means for preventing the opening of the radiator cap when the temperature of the coolant in the radiator is higher than a predetermined value. The lock means is provided between the radiator cap and an inner surface of the fluid supply opening. The lock means comprises a lock portion provided on an inner surface of the fluid supply opening and a lock member fixedly secured to the radiator cap. The lock member is formed of a shape memory alloy.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: October 10, 1989
    Assignees: Akebono Brake Industry Co., Ltd., Akebono Research and Development Centre Ltd.
    Inventor: Takashi Sakai
  • Patent number: 4836406
    Abstract: A closure for a pressurized container, such as a coolant radiator, provides overflow protection by means of a tube connecting the highest point of the container with the filler neck. The end of the tube in the filler neck is closed by a cap having a high pressure relief valve. The closure cap also contains a low pressure relief valve connected to the tube which, together with the high pressure relief valve, maintains a pressure balance in the container without substantial change in the amount of fluid therein. Both valves are connected directly to a bleed line to atmosphere or a reservoir. The tube and filler neck together serve to regulate the pressure in the container and to provide a maximum fluid level within the container.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: June 6, 1989
    Assignee: Deere & Company
    Inventor: Friedrich Benning
  • Patent number: 4773474
    Abstract: A snap on fillerneck for a tank 52, 76 on a heat exchanger includes a hollow body 10 having an interior sealing surface 20 intermediate its ends 12, 14 which is adapted to be engaged by a seal 22 on a pressure cap 24 and which faces axially toward one end 12 of the body 10. An exterior flange 28 is located on the end 12 of the body 10 and has a pressure cap retaining surfaces 30, 32 for retaining the pressure cap 24 thereon. Resilient fingers 36 extend from the other end 14 of the body 10 and have integral, generally radially movable retaining surfaces 38 for retaining abutment with an end 58, 58' in a mounting element 50, 50'. The body 10 includes an exterior sealing surface 44 intermediate the ends 12, 14 thereof for cooperation with a seal 46 to seal the interface of the body 10 and the mounting elements 50, 50'.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: September 27, 1988
    Assignee: Modine Manufacturing Company
    Inventor: Kevin E. Stay
  • Patent number: 4762244
    Abstract: A radiator overflow container for receiving liquid at pressures above atmospheric, including a plastic body portion and a cylindrical or tubular metallic orifice. The metallic orifice has first and second axial ends, and inner and outer surfaces which define an opening which extends between the first and second axial ends. The metallic orifice has the first axial end embedded in the plastic body portion with a plastic-to-metal interface which includes an annular plastic portion which extends into the opening to define an annular, plastic sealing surface. A radiator cap, engageable with the second axial end of the metallic orifice, includes a depending portion which extends into sealing engagement with the annular, plastic sealing surface, to place the plastic-to-metal interface outside the higher-than-atmospheric pressure operating enviroment of the radiator overflow container.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: August 9, 1988
    Assignee: Thermo King Corporation
    Inventor: David B. Ziegler
  • Patent number: 4739824
    Abstract: A hermetically sealed low pressure, low temperature cooling system for internal combustion engines which include a thermostat that operates at a predetermined temperature, typically 195.degree. F. Thermostatic control of engine operation temperature is maintained at or in relatively close proximity to this predetermined temperature thereby eliminating overheating and corrosive deterioration of the cooling system. Free coolant flow between the radiator and a small expansion reservoir is maintained at all times with the expansion reservoir positioned at the elevation of an outlet near the top of the radiator or slightly above this elevation. The system is provided with a transparent viewing cap for the radiator so that the level of liquid coolant can be observed at all times.
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: April 26, 1988
    Assignee: Susan E. Lund
    Inventor: David E. Howcroft
  • Patent number: 4726488
    Abstract: A cap with valve where a seal member is disposed in a fluid flow path of a cap body and urged against a prescribed seal portion. The seal member is of disk-like form or ring form, and provided with lip elements projecting throughout whole circumference of periphery and with recesses formed throughout whole circumference at rear side of the lip elements and having constant length in the radial direction. The seal member is assembled and held to the support plate from rear side of the lip elements and disposed in the cap body so that the lip elements are urged against the prescribed seal portion through biasing means. The cap with valve is provided at opposite surface on rear side of the lip elements in the support plate with an arc-shaped projection fitted corresponding to whole circumference of bottom portion in the radial direction of the seal member at the recesses.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: February 23, 1988
    Assignee: Toyoda Gosei Co., Ltd.
    Inventor: Joji Kasugai
  • Patent number: 4679424
    Abstract: A pressure tester cap is provided and consists of an air valve sleeve which further houses a conventional SCHRADER.RTM. type air valve, and is incorporated within a pressurized radiator cap which when mounted on a neck of a radiator of a motor vehicle, permits the cooling system to be charged with compressed air from an external source, so as to ascertain if there are any leaks in the radiator system.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: July 14, 1987
    Inventor: Iosif Tubman
  • Patent number: 4634017
    Abstract: A radiator flushing apparatus (10) comprising a modified radiator cap unit (11), a hose coupling unit (12), and a pressure relief unit (13) for establishing a normally fluid tight connection between a pressurized water hose (50) and an automobile radiator (100) for the purpose of flushing contaminants out of the radiator (100).
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: January 6, 1987
    Inventor: Greg S. Kilayko
  • Patent number: 4588102
    Abstract: A cap with valve of the invention comprises a cap body having a fluid flow path with a stepped portion, a first spring shoe plate having a locking plate, a first spring, a support plate having a plurality of locking legs to be engaged with the locking hole of the first spring shoe plate and fixing a seal member, a second spring shoe plate having a locking hole, a second spring, and a valve plate having a plurality of locking legs to be engaged with the locking hole of the second spring shoe plate. At the assembling state of parts, group of the first spring shoe plate, the first spring and the support plate fixing the seal member and group of the second spring shoe plate, the second spring and the valve plate are previously assembled through the locking holes and the locking legs respectively and engaged through the spring shoe plates to the cap body fluid flow path, and then engagement of the locking legs with the locking holes in respective groups is released and the parts are arranged.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: May 13, 1986
    Assignee: Toyoda Gosei Co., Ltd.
    Inventor: Joji Kasugai
  • Patent number: 4540103
    Abstract: A cap is provided with a valve adapted to release negative pressure in the interior of a storage tank. Upon assembly of this negative pressure release valve, while a coil spring bears against the underside of a retainer plate, the retainer plate with a valve body fixedly mounted thereon is first assembled temporarily in a spring retainer plate upon which legs are in engagement with a hole. With this arrangement, a valve unit is formed. Next, the valve unit is positioned at the central portion of a body portion and the peripheral edge portion of the spring retainer plate is fitted in a retainer section of the body portion so as to disengage the legs from the hole in the spring retainer plate. In this state, the valve body retained on the retainer plate is pressed against the underside of a valve hole by the coil spring and thus, is regularly positioned.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: September 10, 1985
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Joji Kasugai, Akihiro Nakagami
  • Patent number: 4511056
    Abstract: A closure assembly particularly useful as a radiator cap for the radiator filler tube of a motor vehicle including bayonet connectors for removably fastening the assembly to a filler tube is formed with a vacuum valve and an excess pressure or relief valve formed on an inner cap assembly of the closure assembly, with the inner cap assembly being formed with a pair of telescopically slidable parts and with a compression spring which is preferably constructed as a cup spring in order to press one of the telescopic parts relative to the other to effect sealing engagement with the seat of the filler tube, the force of the cup spring being greater than the closing force of a load spring which is provided for the excess pressure or relief valve.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: April 16, 1985
    Assignee: Reutter Metallwarenfabrik GmbH
    Inventor: Heinrich Reutter
  • Patent number: 4498599
    Abstract: A sealing and valving assembly includes an upper carrier and a lower carrier sized to be received within the filler neck of the radiator of a pressurized liquid cooling system. The upper carrier, an inverted generally cup-like member, carries an atmospheric seal for closing the open end of the filler neck. The atmospheric seal may seal against the inner side wall or the free end of the filler neck. Both types of atmospheric seals may be incorporated in a single embodiment. A pressure seal, carried by the lower carrier, is normally urged against a seat proximate the fixed end of the filler neck by a cylindrical spring bearing against the upper and lower carriers. Preferably, the lower end of the spring is congruent with the pressure valve seat. The upper carrier is secured by swivel connection to a cap which is detachably securable to the free end of the filler neck. The upper carrier may also be detachably connected to the cap.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: February 12, 1985
    Inventor: Walter C. Avrea
  • Patent number: 4497419
    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.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: February 5, 1985
    Assignee: Stant Inc.
    Inventor: Henry M. Reitzel
  • Patent number: 4489883
    Abstract: A temperature regulated dual pressure radiator cap for an engine coolant system is disclosed having a temperature actuated valve that operates to normally open a large pressure responsive valve area to the coolant pressure below a predetermined coolant temperature and close communication therewith thereabove while then exposing the coolant pressure to a small pressure responsive valve area whereby the coolant pressure required for blow off is higher at coolant temperatures above such temperature.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: December 25, 1984
    Assignee: General Motors Corporation
    Inventor: Jeffrey A. Anderson
  • Patent number: 4476995
    Abstract: A breather cap having a foam filter element and means to permit vapors from the crankcase, manifold or the like to which the cap is attached to pass freely in and out of the cap and between the cap and atmosphere. The invention cap includes a twist-in mounting feature, and an improved assembly method.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: October 16, 1984
    Assignee: American Industries
    Inventors: Ralph R. Bellino, Charles W. McVey
  • Patent number: 4416391
    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.
    Type: Grant
    Filed: August 13, 1982
    Date of Patent: November 22, 1983
    Assignee: Compagnie des Produits Industriels de l'Ouest
    Inventor: Jean-Michel Sarrazin
  • Patent number: 4271976
    Abstract: A radiator cap is provided with safety venting character for use with a coolant recovery system. The cap is provided with lever means which compel safety venting of excess pressure in the radiator before the cap can be removed, the venting being effected automatically through a selectively movable valve that is moved to an open position by actuation of the lever means. The cap serves as part of a coolant recovery system, with the selectively movable valve also serving as the valve that automatically opens to permit siphoning of coolant back into the radiator during the cool-down portion of the coolant's heating and cooling cycle.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: June 9, 1981
    Assignee: E. Edelmann & Co.
    Inventor: Timothy Detwiler
  • Patent number: 4241845
    Abstract: Automobile radiator cap assembly particularly suited to automobiles with coolant recovery systems in which coolant is blown through a venting duct in radiator filler neck. The cap assembly comprises a cap to fit over the upper end of the filler neck, a spring loaded primary element to seal against a ledge at the bottom of the filler neck, and a secondary sealing element having a cylindrical skirt portion extending internally within the filler neck and an annular flange portion projecting between the rim of the filler neck and the cap. A circumferential bead on the skirt engages the wall of the filler neck to provide a circumferential seal within the filler neck above the vent passage and the annular flange is clamped against the rim of the filler neck to provide a further seal.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: December 30, 1980
    Assignee: A.S. Daly Nominees Pty. Ltd.
    Inventors: Andrew S. Daly, Peter R. May, George E. Braines
  • Patent number: 4185751
    Abstract: A radiator cap for a vehicle cooling system of a basically closed type includes a first valve which is open when the interior of the radiator is at atmospheric pressure, and remains open until fluid flow out of the radiator closes it. A second, or overpressure, valve in the radiator cap functions to vent the radiator only if potentially damaging excessive pressure exists within the radiator. The normal operating pressure range of the radiator is between the closing pressure of the first valve and the opening pressure of the second valve. When a low vacuum exists within the radiator, the first valve opens, permitting a metered flow of liquid coolant from a coolant recovery bottle back into the cooling system radiator. When a high vacuum is present within the radiator, the first valve opens further to permit higher flow rates of coolant back into the radiator.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: January 29, 1980
    Assignee: Stant Manufacturing Company, Inc.
    Inventors: Phillip L. Moore, John H. Evans
  • Patent number: 4173292
    Abstract: A valved closure for a pressure vessel having an upstanding filling neck with a side opening and a retaining flange, a cap-like adaptor in sealing engagement with the neck and removably retained in interfitting relation with the flange, and open insert in sealing relation within the adaptor and extending spacedly into the neck to sealingly engage the vessel top wall and combine with the neck to define an annular chamber, a rotary valve element seated on the insert and resiliently urged toward sealing engagement therewith, and one-way inlet and outlet valves for passing fluid at predetermined pressures in one direction from the vessel outwardly through the neck side passageway and in the other direction through the neck side passageway into the vessel.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: November 6, 1979
    Inventors: Joseph J. Malacheski, Richard J. Zenda
  • Patent number: RE36927
    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.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: October 31, 2000
    Assignee: Stant Manufacturing Inc.
    Inventors: Jeffery Griffin, Robert S. Harris