Adjustable Leverage Patents (Class 251/234)
  • Patent number: 10520107
    Abstract: A number of variations may include a product comprising: a linkage system comprising: a first and second lever; a first interconnecting component and second interconnecting component operably connected to the first and second levers; a link bar having a first end with a first opening for receiving the first or second interconnecting component, and providing a clearance between the first opening and the first or second interconnecting component and; a second end with a second opening for receiving the first or second interconnecting component and providing a clearance between the second opening and the first or second interconnecting component; and a biasing device having a first and second end for engagement with the first and second interconnecting components and at least one section to allow for increasing or decreasing its length.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: December 31, 2019
    Assignee: BorgWarner Inc.
    Inventor: Petr Malik
  • Patent number: 8813504
    Abstract: A protocol for assembling a fuel shut off pin valve assembly for a gas turbine engine. The protocol outlines a specific sequence of events in order to ensure failsafe incorporation of a fuel shut off valve assembly within the low pressure turbine area and specifically within the engine casing of the gas turbine.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 26, 2014
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Guy Lefebvre, Claude Giardetti
  • Publication number: 20140225019
    Abstract: An automatically restorable handle apparatus includes a mounting seat formed with at least one slide slot, a handle unit and a lever that connects the mounting seat and the handle unit. The handle unit includes at least one handle member and a movable spindle that is movably inserted into the slide slot. The handle member has a sleeve tube, and a guide rod inserted telescopically into the sleeve tube. The guide rod has an outer end section that is connected to and rotatable about the movable spindle. The movable spindle is slidable within the slide slot and between a first position, where the guide rod retracts into the sleeve tube, and a second position, where the guide rod extends out of the sleeve tube.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicant: ZIPSON STEEL INDUSTRIAL CO., LTD.
    Inventor: Chih-Chien Yin
  • Patent number: 7997459
    Abstract: A metering valve is provided for a pressurised container containing a pharmaceutical formulation. The valve has a stem with a central flange and a hollow open end with a side port. The stem slides in a body having larger and smaller diameter portions, and being closed off by a seal against which the flange rests in an inoperative position. A second seal is located around the stem on the opposite side of the flange and trapped by a spring which urges the stem into its inoperative position. When the stem is depressed, the inner seal forms a sliding seal with the smaller diameter portion of the body to define a metering chamber filled with the pharmaceutical formulation. Continued depression opens the side hole to allow the contents of the metering chamber to be dispensed.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: August 16, 2011
    Assignee: Consort Medical PLC
    Inventor: Richard J. Warby
  • Patent number: 7255326
    Abstract: A single-and-continual shot changeover device for a nailing gun includes a trigger shaft positioned in an interior of a trigger body, a trigger inner member pivotally connected with an intermediate fitting stage of the trigger shaft, which also has two slide shaft stages at two sides of the fitting stage for two springs and two press buttons to fitting around respectively. The two press buttons are elastically pushed to shift outward to engage one of two—an upper and a lower—grooves of the two sidewalls of the trigger body. When the two press buttons are pressed inward, the trigger inner member can be shifted up and down to let the press buttons secured at either of the two limit grooves by means of the trigger shaft. Then the trigger inner member is controlled to separate or not from the safety connect rod for changing firing a single shot or continual shot.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: August 14, 2007
    Assignee: Bentley Fastening Tools Co., Ltd.
    Inventor: Brian Wang
  • Patent number: 6871833
    Abstract: The present invention includes a disc drive shocker having a fast valve which can be moved from a full on position to a full off position within a desired interval of time to impart a shock to a disc drive. The valve is connected to a valve actuator which moves the valve spool within the valve housing. The valve actuator is connected to the valve spool though a lever. The lever is pivotable about a fulcrum. The pivot point of the fulcrum is adjusted, away from center, such that the end of the lever connected to the valve spool moves more quickly than the end of the lever connected to the valve actuator.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: March 29, 2005
    Assignee: Seagate Technology LLC
    Inventors: Mark A. Zeh, Jacob D. Levine
  • Patent number: 6832636
    Abstract: A lever for use with a fuel nozzle having a trigger disposed intermediate a hand piece and a hand guard, the trigger being laterally displaceable toward the hand piece so as to actuate a fuel flow. The lever includes an elongate member having a handle on one end and a fulcrum located adjacent an opposite end. The fulcrum is adapted to engage the hand guard. The lever also includes a bearing configured to engage the trigger such that, in use, the handle is rotatable about the fulcrum so as to displace the trigger toward the hand piece.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: December 21, 2004
    Inventor: Graeme Harrison
  • Patent number: 6550435
    Abstract: A valve timing system for an internal combustion engine having a roller finger follower assembly including a lash adjustment mechanism. The roller finger follower assembly includes a base arm and a roller carriage that may be assembled to each other in a range of positions. The roller carriage supports a camshaft contact roller that may be moved by an adjustment mechanism to cause the camshaft contact roller to be contacted by the lobe of a camshaft in a range of angular relationships. The roller finger follower assembly includes a lash pin having a central section that is contoured to provide a secondary lash adjustment.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: April 22, 2003
    Assignee: Ford Global Technologies, LLC
    Inventor: Michael Wayne Zubeck
  • Patent number: 6439538
    Abstract: A pressure variable valve apparatus includes a mover constituted to be embedded in the body and movable linearly in B direction in a main body to change pressure for releasing closure of a valve flow path by a valve element, a fixed magnetic marker provided unmovably to the main body and a variable magnetic marker integrally formed with the mover. Meanwhile, a set pressure detecting apparatus includes a magnetic sensor and a supporter for supporting from outside of the body the magnetic sensor scannably in direction for moving the variable magnetic marker to provide detected output in accordance with positions of the fixed magnetic marker and the movable magnetic marker of the valve apparatus from the magnetic sensor.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 27, 2002
    Assignee: Seiko Instruments Inc.
    Inventor: Takashi Ito
  • Patent number: 6391019
    Abstract: A valve apparatus of a valve system includes a long-sized elastic member a base end portion of which is fixed and a front end portion of which is brought into contact with a valve element and a movable member capable of moving in B1 and B2 directions actually linearly along a longitudinal direction B of the elastic member between both end portions of the elastic member and having a fulcrum portion for flexing the elastic member in C direction between the both end portions of the elastic member. The movable member is constituted by a slider linearly moved in accordance with a mover of a linear step motor element or rotation of a rotor of a rotary type step motor element.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: May 21, 2002
    Assignee: Seiko Instruments Inc.
    Inventor: Takashi Ito
  • Patent number: 6086038
    Abstract: Apparatus primarily for use in seating and unseating a valve by turning the valve stem between a fully opened and fully closed position. In one form of the invention, a lever arm attached to the valve stem is connected at one corner of a triangular shaped crank arm by a link. A second corner of the crank arm is rotatably mounted on a fixed shaft and the third corner is connected to an actuator. The shaft, the link and a pivot point on the distal end of the lever arm and are all brought into alignment along a common axis when the valve is in a fully closed position. Moving the actuator in the opposite direction breaks the alignment between the link and the crank arm and pulls the lever arm toward a valve opening position.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: July 11, 2000
    Assignee: Young & Franklin, Inc.
    Inventor: Weijian Ma
  • Patent number: 5772181
    Abstract: An adjustable pivot valve assembly (10) for use in a fluid flow system (S). A valve body (12) has a fluid flow path therethrough and includes an inlet (14), an outlet (16), and a valve orifice (18) formed intermediate the inlet and outlet. A valve seat (28) is mounted for movement relative to the orifice to open and close the fluid path. The valve seat is attached to a valve stem (30). A solenoid assembly (50) is supplied an input from a sensor/control unit (S) to effect movement of the valve seat. What would otherwise be a linear movement of the valve stem and valve seat is translated into movement of a plunger (78) interconnected with the valve stem to produce a movement which is orthogonal to a longitudinal axis of the valve stem. This translated movement causes the valve seat to pivotally move about the orifice to effect an opening of the orifice for fluid to flow between the inlet and outlet.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: June 30, 1998
    Assignee: Emerson Electric Co.
    Inventor: Walter D. Robertson, III
  • Patent number: 5560389
    Abstract: A pressure reducing valve device includes an adjusting spring for changing its length by a first screw member and a valve stem rotatable by a second screw member so as to control a spring ratio, and a load sensing reducing valve movable on a bracket so as to align a piston with the valve stem by a third screw member whereby the pressure reducing valve device controls a fluctuating width of dynamic characteristics so as to match with an ideal braking line of any of an empty, loaded and surplus loaded vehicle.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: October 1, 1996
    Assignee: Hyundai Motor Company, Ltd.
    Inventor: Cham-Gil Choi
  • Patent number: 5549138
    Abstract: A changeover valve system is provided that is adapted to be secured at one end to a riser from a pressurized piping system and at its opposite end to at least two pressure relieving devices. The changeover valve system includes a body and at least two elbows secured to the body to which are attached at least one of the pressure relieving devices. A partially spherical changeover member is provided within the body having at least one inlet port adapted to communicate with the riser and at least one and preferably two outlet ports adapted to alternately communicate with either of the pressure relieving devices. Transport means are provided for effecting rotation of the changeover member within the body to cause the changeover member to travel from one position wherein an outlet port is in communication with one of the pressure relieving devices to a second position wherein an outlet port is in communication with the other pressure relieving device.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: August 27, 1996
    Assignee: Crosby Valve & Gage Company
    Inventor: Harry E. Eminger
  • Patent number: 5525301
    Abstract: An apparatus for inoculating a sample to or withdrawing a sample from a vessel or conduit includes a body with an internal sample cavity, a valve operating rod movable to open and close an orifice to the sample cavity a coupler to attach the body to a port of the vessel or conduit. A manual and/or automatic device can be provided for moving the valve operating rod to open and close the orifice. The manual device includes a trigger actuator. A portion of the sample cavity is formed by an endcap which includes the orifice. The sample cavity has an inner wall and outer wall with a space therebetween. The space can thermally insulate the sample cavity from the ambient environment as well as the interior of the vessel or conduit. The valve operating rod has a diaphragm attached to one end. A blunt sealing tip of the diaphragm seals the orifice when the valve operating rod moves to close the orifice.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: June 11, 1996
    Assignees: NL Technologies, Ltd., University of Maryland at College Park
    Inventors: Douglas A. Newberg, Vjekoslav Pavlin
  • Patent number: 5040769
    Abstract: A linkage attachment device is used in cold weather in combination with f and water dispensing nozzles having triggers for opening and closing valves for dispensing liquids and for stopping the flow of liquid, without manual contact by the user with such nozzles. Means are provided for preventing the unintended opening of the valves and for limiting the degree to which the valves can be opened by actuating the linkage attachment device.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: August 20, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Gerald F. Wilber, James D. Lundin, John A. Christians
  • Patent number: 4573661
    Abstract: A multiple schedule valve including a valve seat and a valve member movable with respect thereto. A lever in the form of a bell crank is connected to the valve member and is movable on a pivot. A first actuator is connected to the lever to pivot the same to thereby move the valve member relative to the seat. A second actuator is connected to the pivot and is operable to shift the pivot axis thereof.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: March 4, 1986
    Assignee: Sundstrand Corporation
    Inventor: David N. Chapman
  • Patent number: 4431369
    Abstract: A governor control linkage assembly to be connected between the governor and a valve to be controlled by the governor such as the inlet valve for a steam turbine upstream from a venturi type safety trip valve therein in one preferred form with Woodward T.G.-10 governors has a main lever arm connected at one end to the governor for actuation thereof and to the opposite end to a pivot arm on a fulcrum assembly which permits the pivot arm to be moved by a manually operable threaded assembly connected thereto so as to move the inlet valve from open to closed position and from closed to open position when the turbine is shut down to aid in the restarting thereof. In another preferred form with Woodward P.G.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: February 14, 1984
    Assignee: Edison International
    Inventor: George M. Lucas
  • Patent number: 4348917
    Abstract: The disclosure is of a control mechanism including a rockshaft carried by a support and itself having fixed thereto an upstanding rocker element. A cam is disposed alongside the rocker element, having a lower end formed with an opening that loosely embraces the rockshaft so as to enable relative movement of the cam within at least the limits of the opening. Lost-motion means interconnects the rocker element and cam for rocking of the two in unison about the rockshaft axis while permitting the aforesaid limited movement. Adjusting means is provided between the cam and rocker element for achieving adjustment of the cam relative to the rocker element while retaining the floatability or relative movement of the cam.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: September 14, 1982
    Assignee: Deere & Company
    Inventors: Frank H. Gardner, Carl E. Kittle
  • Patent number: 4319714
    Abstract: A device for setting the closed position of a valve of the type comprising a lever having a ramp acting on a thrust member of a slidable assembly. Adjustment is effected by adjustment means comprising a cam device interposed between the thrust member and the ramp on the lever. The cam device is disposed eccentrically of its journals and it is displaced angularly from the exterior by inserting a screwdriver or the like through a hole in the body. Ratchet teeth are provided on the cam device and cooperate with pawls for retaining the desired position of the cam device when it is attained.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: March 16, 1982
    Assignee: Societe Anonyme Francaise Du Ferodo
    Inventors: Jean-Louis Moulene, Jean-Francois Bouvot
  • Patent number: 4258868
    Abstract: A ladle for the pouring of a heated molten material such as iron or the like includes a ladle body defining a chamber for holding a heated molten material. There is a bottom pour opening in the chamber and a stopper rod is movable between open and closed positions relative to the pour opening to control the flow of molten material therethrough. An arm is pivotally supported on the side of the ladle and in turn is pivotally connected to the stopper rod. An air cylinder is attached to the arm for causing movement thereof to thereby effect movement of the stopper rod between the described open and closed positions. There is an adjustable rod positioned between the air cylinder causing movement of the pivotal arm and the point of pivotal attachment of the arm to the ladle to thereby control the length of travel of the stopper rod and thus the degree to which the pour opening is exposed by the stopper rod.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: March 31, 1981
    Assignee: Moline Corporation
    Inventor: Leo I. Drysh
  • Patent number: 4180243
    Abstract: An automatic and manual linear reversion control mechanism for a hydraulic servo actuator assembly is disclosed for linearly transferring control between an automatic (fly by wire) control mechanism and a manual control mechanism. A command select mechanism includes two axially aligned pins mounted on a rigid command selector bar, with the first pins slidably mounted in a slot in a control bar of the manual control mechanism and the second pin slidably mounted in a slot in the control bar of the automatic control mechanism so that movement of the command selector bar to displace the two axially aligned pins in their associated slots provides a linear transfer of control of the hydraulic assembly between the manual control and the automatic control.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: December 25, 1979
    Assignee: Textron Inc.
    Inventors: William W. Hsu, Robert McPherson
  • Patent number: 3987813
    Abstract: An actuator is described for a float-type valve, in which a screw and nut assembly is used to preset the position wherein the float arm engages the valve operator.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: October 26, 1976
    Assignee: Plasson Maagan Michael Industries Limited
    Inventor: Moshe Leczycki
  • Patent number: 3973577
    Abstract: A fluid control valve has a port means across which a control element, mounted on a lever, is slidable. An input control arm rotates a cam which imparts linearly-related angular movement to a further lever. A roller is engaged between the two levers and is movable to vary the distances from the pivotal axes of the levers to their points of engagement with the roller. These distances are different on each lever. Movement of the roller thus varies the linear relationship between movement of the input arm and the control element.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: August 10, 1976
    Assignee: Joseph Lucas (Industries) Limited
    Inventor: Joseph Louis Bloom
  • Patent number: 3938935
    Abstract: A control unit for a gas-fired appliance comprises a service tap that acts also as a flame failure device. The flame failure device controls gas flow to a gas governor which is an integral part of the unit and associated with the gas governor is a low gas pressure cut-off. The unit also incorporates a modulating gas flow control valve operatively coupled to a thermostat which, in the case of a gas-fired water heater, is responsive to water temperature in the heater. When used with a water heater, the unit also includes a further thermostat set to terminate gas flow in the event that a predetermined maximum water temperature is exceeded.
    Type: Grant
    Filed: November 19, 1973
    Date of Patent: February 17, 1976
    Assignee: Radiation Limited
    Inventor: Harald Engelbert