With Seal Patents (Class 137/384)
  • Patent number: 9217514
    Abstract: A lock-out bracket secures the position of a shaft extending through a pneumatic actuator, the shaft having a first end and a second end, the first end being operative for controlling a valve, the second end being coupled to a limit switch mounted on a limit switch bracket mounted to the actuator. The lock-out bracket includes a substantially flat base plate and a substantially flat lock-out tab substantially perpendicular to the base plate, the base plate defining an opening configured for matingly fitting over, receiving, and engaging the second end of the shaft. The lock-out tab defines a first hole adapted for alignment with a corresponding second hole defined on the limit switch bracket for facilitating the insertion of a lock shackle through the first hole and the second hole to secure the lock-out bracket relative to the actuator and prevent movement of the shaft and valve coupled to the shaft.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: December 22, 2015
    Inventor: Bryce M. Bagby
  • Patent number: 9068670
    Abstract: A valve comprising a valve body having an inlet and an outlet; a valve member moveable in a linear direction with respect to the valve body between a closed condition in which flow between the inlet and the outlet is restricted and an open condition; and an actuator coupled to the valve member such that the valve member is constrained to rotate with the actuator and is movable in the linear direction with respect to the actuator, wherein the valve is configured such that rotation of the actuator causes the valve member to move in the linear direction with respect to both the actuator and the valve body between the closed condition and the open condition.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: June 30, 2015
    Assignee: LEAFIELD MARINE LIMITED
    Inventors: David Louis Dickins, Stephen David Horn
  • Publication number: 20140174560
    Abstract: A rotary seal system is disclosed for an air circulating system. The rotary seal system includes a rotary shell having one or more air circulation chambers. The system includes a plurality of stationary, flexible seal bodies arranged in an angled fashion operatively coupled about opposing circumferential edges of the rotor shell to maintain separation between the one or more air circulation chambers. In one embodiment, a helical ramp disposed in at least one of the plurality of stationary, flexible seal bodies provides internal realignment of the flexible seal bodies.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventor: NATHAN HASTINGS
  • Patent number: 8727311
    Abstract: The invention relates to a vacuum valve for interrupting, releasing or controlling a flowing medium in the interior (3) of the vacuum valve (1). A shaft (6) coupled to a valve drive (5) is routed gas-tight from the atmospheric area (4) to the interior (3) through a valve housing (2) by way of a sealing shaft penetration (20) so that a movement produced by the valve drive (5) can be transferred from the atmospheric area (4) to the interior (3) for the purposes of interrupting, releasing or controlling the flow.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: May 20, 2014
    Assignee: Vat Holding AG
    Inventor: Florian Ehrne
  • Patent number: 8528587
    Abstract: A manifold includes first and second plates secured together at an inner face of each plate. A plurality of chambers and passages are in the inner faces of the plates and at least one port on an outer face of each plate connected to one of the chambers and passages. A crossover element in the inner face of the first plate separates a chamber or passage in the first plate from a chamber or passage in the second plate in the crossover area where the chambers or passages cross.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: September 10, 2013
    Assignee: New York Air Brake Corporation
    Inventors: Bucky J. Bordeau, Eric Wright, John M. Reynolds
  • Publication number: 20120160866
    Abstract: A vacuum loader for providing granular resin material to resin material processing equipment has a loader housing, a vacuum motor, a dust filter, an air blast generator, a dump flap, and a pivoting manually releasable latch for retaining the lateral web and the loader from tilting rotation of the loader about the shaft and supporting the loader when placed in a tilted orientation; the latch being weighted to pivotally return to a web-retaining position when released by an operator.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 28, 2012
    Inventor: Stephen B. MAGUIRE
  • Publication number: 20120145260
    Abstract: A biotip according to an embodiment of the invention moves a reaction mixture along a longitudinal direction under the force of gravity. The biotip includes a chamber formed of a transparent material and filled with a liquid having a smaller specific gravity than the reaction mixture and immiscible with the reaction mixture, and a seal that seals the chamber. The liquid has a volume resistivity of greater than 0 ?·cm and 5×1013 ?·cm or less.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 14, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hiroshi KOEDA
  • Patent number: 7721755
    Abstract: A valve assembly to dispense fluid from fluid containers including a member that is rotatably slideable in a tube between open and closed positions. The valve assembly utilizes sealing beads to provide seals so that fluid cannot be dispensed from the assembly when the assembly is in the closed position. The valve assembly also includes a tamper evident indicator to show a user whether or not the valve assembly has been previously actuated. The tamper evident indicator may include a tab that is broken when the valve assembly is first actuated. The tamper evident indicator may also include a skirt that either detaches from a knob or fractures when the valve assembly is first actuated.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: May 25, 2010
    Assignee: DS Smith Plastics Limited
    Inventors: Mark A. Smith, James Richards
  • Publication number: 20100096026
    Abstract: The present invention provides an intake pipe for drinking water taps, including a metal screwed conduit and a plastic inner pipe. The metal screwed conduit has screw threads configured on its periphery, and a through pipe hole inside. The plastic inner pipe is placed in the through pipe hole. On top of the plastic inner pipe, there is an expanded ring to be held tightly against the top end of the metal screwed conduit. The bottom end of the plastic inner pipe extends to the bottom of the metal screwed conduit. An O-ring seal is placed between the metal screwed conduit and the plastic inner pipe. The O-ring seal can be configured between the top end of the metal screwed conduit and the expanded ring of the plastic inner pipe, or between the through pipe hole of the metal screwed conduit and the outside wall of the plastic inner pipe.
    Type: Application
    Filed: October 18, 2008
    Publication date: April 22, 2010
    Inventors: Jui-Chien CHEN, Jui-Ching Chen
  • Patent number: 7588050
    Abstract: A cap permanently indicates the occurrence of tampering with a gas service valve. A substantially square base has intersecting slots differently sized to confine correspondingly sized valve cocks against rotational motion. A dome on the base covers the slots and the valve cock. Two ties of adjustable length secure the base against the valve body. The base, dome and ties are of material which is permanently altered by application of force to disorient the mounted cap sufficiently to permit operation of the valve cock. Removal of excess portions of the ties makes reuse difficult, if not impossible. The dome may be transparent so that the orientation of the valve cock can be observed without removing the cap from the valve. Markings on the dome indicate the orientation of the valve cock when the cap was installed.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: September 15, 2009
    Inventor: Jim L. Russell
  • Patent number: 7007712
    Abstract: A pneumatic tool lock integral to the structure of a pneumatic tool and adapted to replace the existing male nipple component of the pneumatic tool is provided. The pneumatic tool lock includes an outer housing adapted to provide access to inner components of the pneumatic tool lock, the outer housing having a first end for securely mating with the pneumatic tool and a second end for coupling with a fluid source. An inner passageway within the outer housing provides a means for fluid to flow through from the fluid source to the pneumatic tool. A key operated lock mounted on the outer housing is displaceable between a first open position and a second closed position. A needle valve attached to the key operated lock disengageably mates with a channel extending between the inner passageway and the outer housing so as to block and un-block fluid flow into the inner passageway.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: March 7, 2006
    Inventor: Gary Anderson
  • Patent number: 6918402
    Abstract: The present invention provides a flow control apparatus and method. In accordance with the present invention, the flow control apparatus comprises a thermostat that automatically actuates valve to enable water to flow through the valve when the temperature of the air or water is at or near the freezing temperature of water (32° F.). When the temperature of the air or water rises above freezing, the thermostat causes the valve to close, thereby preventing water from flowing through the valve. Therefore, when the apparatus is coupled to an end of a water conduit, such as a water spigot or hose, water is allowed to flow through the conduit when the air or water temperature is at or near freezing to prevent the conduit from bursting due to water freezing and expanding within the conduit.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: July 19, 2005
    Inventor: Bruce Harvey
  • Patent number: 6863083
    Abstract: A valve is disclosed for dispensing a flowable material. The valve has a first chamber (40) at a first pressure wherein said first chamber (40) defines an outlet (28) in communication with said first chamber (40). A second chamber (42) is at a second pressure. The valve has a stop (18) indexed against a third pressure, operating to selectively place the first chamber (40) into communication with the second chamber (42). The stop (18) is operative to connect the second chamber (42) to said first chamber (40) when the first pressure is less than the third pressure.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: March 8, 2005
    Assignee: Baxter International Inc.
    Inventors: Hal C. Danby, Mark E. Williamson, Julian F. R. Swan
  • Publication number: 20030015238
    Abstract: A pressure regulator having a first orifice that permits a flow of liquid and maintains a back pressure in the supply line, and a second orifice that provides a second, greater flow of fluid responsive to a pressure increase in the inlet line.
    Type: Application
    Filed: June 18, 2002
    Publication date: January 23, 2003
    Inventor: Thomas B. Martin
  • Patent number: 6422029
    Abstract: A security kit and method for protecting refrigerant systems is provided with a seal member for each service port of an air conditioning system. The kit may also include a validation record for recording identifying indicia from each of the seal members. The seal members are heat shrinkable plastic sleeves adapted to be secured on service ports and heated to shrink around and conform to the service port, substantially interfering with the use of the service port. The seal member is not removable without perceptible alteration. A kit can be provided with seal members for one or more service ports, and a locking ring for further securing the seal member to the service ports, particularly when the service ports have smooth exterior surfaces.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: July 23, 2002
    Inventor: Gregory J. Boitnott
  • Publication number: 20020084591
    Abstract: An axis seal device is provided between a vessel filled with a first gas of a first gas pressure and a rotation axis passing through the vessel. The axis seal device includes first to third dry gas seal sections. The first dry gas seal section is provided such that the rotation axis is rotatable, and has a first space section with a second gas pressure. The second dry gas seal section is provided subsequently to the first dry gas seal section such that the rotation axis is rotatable, and has a second space section with a third gas pressure. The third dry gas seal section is provided subsequently to the second dry gas seal section such that the rotation axis is rotatable, and has a third space section with a fourth gas pressure. The first gas pressure is lower than the second gas pressure, the second gas pressure is higher than the third gas pressure, the third gas pressure is higher than the fourth gas pressure and an atmospheric pressure, and the fourth gas pressure is lower than the atmospheric pressure.
    Type: Application
    Filed: December 31, 2001
    Publication date: July 4, 2002
    Inventors: Itsuo Akazawa, Akira Hiromoto, Takanori Tsutsumi, Kazuhiko Maekawa
  • Patent number: 6164318
    Abstract: A valve locking system for safely and economically locking out control valves. The valve locking system includes a valve locking assembly for preventing manipulation of a valve including a rotating handle. The handle includes at least one aperture extending through the handle. The assembly includes a brace designed for coupling around a neck of the valve such that the brace is prevented from rotating around the neck of the valve. A cable includes a first end loop and a second end loop. The first end loop is coupled to the brace. The second end of the cable is insertable through the aperture in the handle. A locking member for coupling the first end loop to the second end loop such that the cable ties the handle to the brace whereby the handle is prevented from being rotated.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: December 26, 2000
    Inventor: Kenneth Dixon
  • Patent number: 6053005
    Abstract: A security kit and method for protecting refrigerant systems is provided with a seal member for each service port of an air conditioning system. The kit may also include a validation record for recording identifying indicia from each of the seal members. The seal members are heat shrinkable plastic sleeves adapted to be secured on service ports and heated to shrink around and conform to the service port, substantially interfering with the use of the service port. The seal member is not removable without perceptible alteration. A kit can be provided with seal members for one or more service ports.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: April 25, 2000
    Inventor: Gregory J. Boitnott
  • Patent number: 6003714
    Abstract: A compressed gas cylinder safety cap and valve seal retainer comprising a cap having a floor, a wall and a stem, the wall extending perpendicularly from and circumferentially around the floor, the stem extending perpendicularly from the floor at the central axis of the floor; a second strap connected at its proximal end to the cap, the second strap having a pair of bendable areas, a tear tab and perforations, a second strap angled portion attached at its proximal end to the second strap and at its distal end to a clasp tab, the clasp tab having a double ridged portion extending perpendicularly away from the clasp tab, the double ridged portion having a first set of ridges and a second set of ridges offset from the first set of ridges; a first strap, the first strap being connected at its proximal end to the cap, the first strap having at its distal end a clasp receptacle, the clasp receptacle having a hollow interior, the hollow interior having mounted therein on an interior surface a series of ridges and on
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: December 21, 1999
    Inventor: Henry Buermann
  • Patent number: 5533891
    Abstract: An automatic locking pressure regulator or valve for a fuel tank. The regulator or valve includes locking means which prevent loosening of the regulator or valve from a standard fuel cylinder valve outlet connection. In a preferred embodiment of the present invention, the locking mechanism is coupled to the base of the regulator or valve, and protrudes into the threads on the standard fitting on the fuel cylinder to prevent one-way rotation of the pressure regulator or valve.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 9, 1996
    Assignee: Uniweld Products, Inc.
    Inventors: David S. Pearl, II, Frank G. Smith
  • Patent number: 5241982
    Abstract: A tamper-evident cap structure cooperates with a one-way, anti-disconnect strap so that the cap can be screwed onto or secured to the service port of an air-conditioning system, and the anti-disconnect strap can be then looped around both the cap and the refrigerant flow pipe supporting the service port. The anti-disconnect strap can form a permanent part of the cap, or it can be removably secured to the cap; in either case unauthorized entry is indicated by the need to break or sever the strap. Also provided with the anti-disconnect strap is an identity tag upon which the identity of the service organization and date of service can be recorded when a new cap-and-strap assembly is used.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: September 7, 1993
    Inventor: David W. Taylor
  • Patent number: 5203477
    Abstract: The invention relates to a closure unit for a container suited to filling and dispensing a beverage stored under a pressuring gas. The closure unit comprises a bush from which is disposed a tubular element mounting two concentric valves and a siphon tube which extends into the container. The bush is locked into place in the neck of the container by a threaded locking sleeve which sandwiches a deformable ring between it and the bush. The ring and locking sleeve have respective intermeshing saw toothed profiles which allow locking to occur. This prohibits gas flow from the container between the neck and the bush. Upon unlocking, the profile in the ring becomes fractured thereby depressuring the container.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: April 20, 1993
    Assignee: Yin Seng Lim
    Inventor: Sin W. Lo
  • Patent number: 4935041
    Abstract: An apparatus for the collection of volatiles includes a housing that forms an environmental chamber. Dishes of test sample are placed in this chamber which is closed with a transparent cover. A gasket assures an airtight seal between the cover and the housing. The housing is supported on a stand that allows the angular orientation of the housing to be adjusted relative to the path of the sun. A jacket is also formed in the housing about the environment chamber. A heat exchange fluid is circulated through this jacket to maintain the environmental chamber and, thus, the test sample within a desired temperature range. Volatiles emitted by the test sample are collected by circulating air through the environmental chamber. This air which passes across the test sample dishes serves to sweep up the volatiles which are then delivered to a collection trap for qualitative and quantitative analysis.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: June 19, 1990
    Assignee: Pharmacology & Toxicology Research Lab.
    Inventors: Lowell J. Lawrence, Abbe L. Kesterson, Steven B. Jackson, Luis O. Ruzo, Terry L. Johnson
  • Patent number: 4889160
    Abstract: A two-way tamper-proof vent arrangement especially constructed for food grade receptacles and tanks is disclosed. The vent arrangement includes inner and outer stainless steel inverted cup members which are nested together and are concentrically mounted on a bracket over a tubular vent opening in the receptacle or tank. The outer cup member has a lower circumferential edge which bears on the surface of the receptacle or tank surrounding the vent opening so that tubes or other instruments cannot gain access to the vent opening. The inner cup member has a lower circumferential edge spaced from the surface of the receptacle surrounding the vent opening. The outer cup member is provided with a plurality of small openings to permit the inflow and outflow of venting air along a labyrinth path formed by the inner and outer cup members between the exterior of the outer cup member and the vent opening.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: December 26, 1989
    Inventor: Johnny S. Sheets
  • Patent number: 4860786
    Abstract: The combination of a fluid conductive pipe line and an in-line valve adapted to open and close the fluid passage in said line, said valve having an external handle operatively connected to open and close the valve, said handle having an enlarged free end forming a foot pedal and being positioned such that the handle can be pivotally rotated to close said valve by foot or other pressure on said foot pedal.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: August 29, 1989
    Inventor: Stephen L. Pollard
  • Patent number: 4818469
    Abstract: The seal for turning valve bodies, in particular for valves in radioactive lants, is composed of a molded element of flexible graphite which is coated with a thin, flexible tantalum layer. The tantalum enclosure surrounds the graphite molded element, preferably all around. The tantalum layer is sufficiently thin so that it remains flexible.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: April 4, 1989
    Assignee: Deutsche Gesellschaft fur Wiederaufarbeitung von Kernbrennstoffen mbH
    Inventor: Helmuth Supik
  • Patent number: 4705064
    Abstract: A safety seal for an operating lever utilizing a cap which is capable of covering at least one end of the lever pin extending to one side of the lever. The cap is connected to the other side of the lever pin by a tether. The cap and tether are reuseable as a seal.
    Type: Grant
    Filed: August 12, 1986
    Date of Patent: November 10, 1987
    Inventor: Freddy Self
  • Patent number: 4684492
    Abstract: A repair fixture for water-cooled nuclear reactors including an openable reactor pressure vessel having a wall, and conduits passing through the pressure vessel wall for flooding the pressure vessel, includes a sealing box disposed in the opened, flooded pressure vessel, a device connected to the sealing box for pressing the sealing box liquid-tightly against the pressure vessel wall enclosing at least some of the conduits, and a device connected to the sealing box for evacuating the conduits enclosed by the sealing box.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: August 4, 1987
    Assignee: Kraftwerk Union Aktiengesellschaft
    Inventors: Rainer Kunz, Jakob Stauner, Robert Weber
  • Patent number: 4503880
    Abstract: A lockout device for a consumer gas supply includes a swivel pipe having an intermediate angulated section having a swivel connector at one end and a threaded connection at the opposite end. The swivel pipe is connected to the gas meter. An expandable plug unit includes a rubber plug with hardened washers abutting the opposite ends. A nut is fixedly attached to one washer and an expanding bolt of a hardened metal extends through washers and plugs with a threaded connection to the nut. The head has a screw driver slot which permits rotating the bolt only to expand the plug. The washers and bolt are formed of a case hardened steel so as to require special shop drill to destroy plug unit for removal and reopening the swivel pipe.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: March 12, 1985
    Assignee: Wisconsin Gas Company
    Inventor: Sherman W. Hochman
  • Patent number: 4331616
    Abstract: An adjusting screw of a carburetor comprising a threaded portion, an enlarged head portion and a reduced diameter portion located therebetween. A thin hollow cylindrical wall is formed on a link lever of the carburetor. After the adjusting screw is screwed into the threaded hole of the hollow cylindrical wall, the reduced diameter portion of the adjusting screw is cut. Then, the top portion of the hollow cylindrical wall is bent inward for irremovably fixing the adjusting screw onto the link lever.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: May 25, 1982
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Aisan Industry Co., Ltd.
    Inventors: Yuzo Kato, Mikitoshi Kako, Kunio Kadowaki
  • Patent number: 4317784
    Abstract: An adjust screw device for use with a carburetor of an internal combustion engine having stops for restricting the range within which the automobile user can readjust the idle R.P.M. by adjusting the adjust screw at the carburetor. The adjust screw device is composed majorly of a first adjust screw having a large adjustable range and a second adjust screw for fine adjustment, the physical position of the second adjust screw being changed by the adjustment of the first adjust screw. After initial adjustment of the first adjust screw by the manufacturer, further adjustment of the screw is completely blocked and the second adjust screw is then adjustable by the user only over a predetermined range.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: March 2, 1982
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Aisan Kogyo Kabushiki Kaisha
    Inventors: Yuzo Kato, Hidenori Tateno, Mikitoshi Kako
  • Patent number: 4308220
    Abstract: A construction for protecting a member, such as an adjusting screw or fixing bolt, fitted to a base, from being tampered with, including a wall formed generally in the shape of a hollow tube, attached by one of its ends to the base, and surrounding the member to be protected, and a plug inserted into the other end of the wall so as to be wedged into it, with a slot being formed in the wall, extending along the axial direction of the wall from the end of the wall remote from the base, to a slot bottom at an axial position between the free end of the wall and the base, the slot bottom being closer to the base than is the part of the plug which is closest to the base, so that a gap is left between the bottom of the slot and the bottom wall of the plug for a removing tool to be inserted to lever the plug out of the end of the wall.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: December 29, 1981
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventor: Hidenori Tateno
  • Patent number: 4292994
    Abstract: Electro-mechanical, milk transfer systems which interlock the dairy farmer's milk holding tank agitator and the pump for drawing milk from the tank into a milk transport vehicle to preclude energization of the pump until the agitator has operated for a minimum, predetermined time; tamper proof circumvention-preventing devices to preclude by-pass of the interlock systems during milk transfer to the transport vehicle; and milk sample-taking units for automatically taking one or more samples of the milk being pumped into the transport vehicle.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: October 6, 1981
    Inventors: Julius T. Johnson, Robert R. Johnson
  • Patent number: 4246929
    Abstract: A fuel metering apparatus, for supplying metered fuel to an associated combustion engine, has an idle fuel metering and supply system comprising adjustable valving means which, in turn, comprises a discharge orifice means and cooperating valving member which is adjustably selectively positioned with respect to such orifice means in order to thereby establish a desired metered rate of fuel flow through the thusly determined effective flow area of the orifice means for a particular pressure differential thereacross; the adjustable valving member is generally contained within a cooperating body member or portion and access to the valving member, subsequent to it being selectively positioned, is prevented by closure members placed in position after the said selective positioning of said valving member.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: January 27, 1981
    Assignee: Colt Industries Operating Corp
    Inventor: Russell J. Wakeman
  • Patent number: 4239710
    Abstract: A device for checking random adjustment of the adjustable parts of a carburetor comprising a locked cover or covers mounted over the adjusting screw heads on the adjustable parts so that the cover or covers can not be removed without breaking it. Thus, the device is intended to inhibit the user or "layman" from improperly adjusting the adjustable parts of the carburetor. Provision of the cover or covers is also helpful in preventing the screws from becoming loose under vibration or other external forces.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 16, 1980
    Assignee: Aisan Industry Co., Ltd.
    Inventor: Motoki Sato
  • Patent number: 4234524
    Abstract: A mixture adjusting screw in a carburetor for regulating the fuel efflux during engine idling is provided in which the end needle portion of the screw is located in the idle port of the carburetor and a spring is loaded around the rod portion of the screw to hold the screw in position after adjustment so as to maintain its proper adjustment. The screw head is covered by a plug and it is specifically shaped to inhibit easy access of the user to the screw for adjustment purposes. The air and fuel mixture formed in the low-load fuel system in the carburetor is well stirred due to the presence of the spring which is exposed to a fuel passage and is formed into an emulsion flow, allowing stabilized rotation of the engine during idling and high performance thereof in normal running.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: November 18, 1980
    Assignee: Aisan Industry Co., Ltd.
    Inventor: Hisaharu Arai
  • Patent number: 4234523
    Abstract: An adjustment prevention mechanism comprises a stationary covering member disposed opposite to a head of an adjusting screw for adjusting fuel flowing in a slow speed fuel passage in idling of an engine, and a cap-shaped plug. The stationary covering member is secured to something within an engine room, for example a suction pipe of the engine, and has a hole through which the adjusting screw is adjusted. The cap-shaped plug is inserted rigidly in the hole to blockage the hole after the adjusting screw was adjusted, so that the adjusting screw can not be readjusted by usual users after the engine is transferred to the users.
    Type: Grant
    Filed: January 11, 1979
    Date of Patent: November 18, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Keiichi Onuki, Tohru Nakagawa, Shigeyuki Kenma
  • Patent number: 4120918
    Abstract: A fuel metering apparatus, for supplying metered fuel to an associated combustion engine, has an idle fuel metering and supply system comprising adjustable valving means which, in turn, comprises a discharge orifice means and cooperating valving member which is adjustably selectively positioned with respect to such orifice means in order to thereby establish a desired metered rate of fuel flow through the thusly determined effective flow area of the orifice means for a particular pressure differential thereacross; the adjustable valving member is generally contained within a cooperating body member or portion and access to the valving member, subsequent to it being selectively positioned, is prevented by closure members placed in position after the said selective positioning of said valving member.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: October 17, 1978
    Assignee: Colt Industries Operating Corp.
    Inventor: Daryl O. Codling
  • Patent number: 4024740
    Abstract: Locking hood assembly for mounting on a gas service head valve of the lubricated plug type to prevent unauthorized opening of the valve. Locking hood assembly comprises a generally cylindrical main body or hood which covers the valve stem and stop collar when it is mounted on the valve thus preventing valve operation, the hood being attached to the valve using the removable buttonhead grease fitting which is conventionally an element of the valve itself. Assembly further comprises a cover cap which conceals the grease fitting after the hood is mounted on the valve; and a barrel lock which locks the cover cap to the main body or hood. The main body further has an enlarged, generally oval-shaped, peripherally extending skirt portion which fits over the oval-shaped gland seal cover plate of the valve when the hood is in place and prevents access to the gland seal cover bolts and to the normal spacing between the gland seal cover and the valve housing.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: May 24, 1977
    Inventor: Bernard A. Di Giovanni
  • Patent number: 3980099
    Abstract: A valve guard to prevent deliberate tampering with or accidental movement of a rotatable valve handle comprising a connecting member for connection to the valve body and a locking member pivotally connected to the connecting member for movement toward and away from the valve handle. The locking member includes first abutment means engageable with the valve handle in an open-valve position to lock the valve handle in the open-valve position and second abutment means engageable with the valve handle in a closed-valve position to lock the valve handle in the closed-valve position.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: September 14, 1976
    Assignee: Custom Iron & Specialties, Inc.
    Inventor: Gurney V. Youngblood
  • Patent number: RE31027
    Abstract: Locking hood assembly for mounting on a gas service head valve of the lubricated plug type to prevent unauthorized opening of the valve. Locking hood assembly comprises a generally cylindrical main body or hood which covers the valve stem and stop collar when it is mounted on the valve thus preventing valve operation, the hood being attached to the valve using the removable buttonhead grease fitting which is conventionally an element of the valve itself. Assembly further comprises a cover cap which conceals the grease fitting after the hood is mounted on the valve; and a barrel lock which locks the cover cap to the main body or hood. The main body further has an enlarged, generally oval-shaped, peripherally extending skirt portion which fits over the oval-shaped gland seal cover plate of the valve when the hood is in place and prevents access to the gland seal cover bolts and to the normal spacing between the gland seal cover and the valve housing.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 14, 1982
    Inventor: Bernard A. Di Giovanni