Lever Patents (Class 251/78)
  • Patent number: 8905072
    Abstract: A manual override device for controlling at least one valve in a power system includes a rod having a first end and a second end. An attachment is configured to attach to a spool of the at least one valve and includes a clearance with respect to the first end of the rod so as to allow the attachment to move with the spool, during ordinary operation of the power system, without contacting the rod. A lever is connected to the second end of the rod and is configured to activate the manual override device by moving the rod in a longitudinal direction such that the first end of the rod makes contact with the attachment to move the spool.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: December 9, 2014
    Assignee: Eaton Limited
    Inventors: Michael Stanley Barnes, Evan Kyle Artis, Nachiket Pandurang Honkalse
  • Publication number: 20120001105
    Abstract: A valve control apparatus is provided with a valve, a shaft supporting the valve, an end-gear of an actuator driving the valve. The shaft is press-inserted into the end-gear. A stopper disposed on the shaft regulates a valve operation range. The end-gear can engage with the middle gear of the reduction-gears mechanism even in out of the gear-operation-angle range. When a rotation angle sensor detects a rotation angle of the end-gear in out of the gear-operation-angle range, it is determined that a malfunction occurs in a rotation-force-transmitting path.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Inventors: Hideki Hayashi, Toshiaki Uda
  • Patent number: 7882836
    Abstract: A diaphragm valve is provided, in which there is improved sealing of a closing cover (15) against the valve housing (3). The seal includes a cylindrical sealing washer (25), which is connected to the valve housing (3) in one piece and into which a cylindrical wall section (18) of the closing cover (15) can be inserted with press fit.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: February 8, 2011
    Assignee: Dräger Medical GmbH
    Inventors: Brian Hewitt, Piers Antony James
  • Patent number: 7740226
    Abstract: An electromagnetic actuator is disclosed. The actuator has a coil arrangement which can be excited electrically, and has an armature. The armature is mounted such that it can move axially in the coil arrangement, is composed of soft magnetic material, and is moved in the axial direction when the coil arrangement is excited. A guide sleeve is fixed in the coil arrangement and guides the armature in the axial direction. The guide sleeve is produced from a soft magnetic material.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: June 22, 2010
    Assignees: Robert Bosch GmbH
    Inventors: Markus Engel, Horst Franke
  • Patent number: 7690351
    Abstract: To reduce cost and size of a throttle valve control device, one end 3a of a throttle valve shaft 3 fixedly has a throttle valve lever 5 energized in valve opening direction by a throttle valve lever open spring 8, and rotatably has a drive gear 6 connected to a motor gear 9, a limp opening control lever 15 is fixed at another end 13b of a drum shaft 13 axially supported by a first cover 12, an accelerator drum 14 energized in valve closing direction by a drum close spring 16 is fixed at one end 12a, a first opening directional end face 5a of the throttle valve lever 5 is provided facing a limp opening control end face 15b, and a second opening directional end face 5b of the throttle valve lever 5 is provided facing a drive pin 6a of the drive gear 6.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: April 6, 2010
    Assignee: Keihin Corporation
    Inventor: Yasushi Kondo
  • Patent number: 7032877
    Abstract: An actuator has a drive shaft connected to a valve flap. A toothed quadrant is mounted to be rotatable about the first axis of rotation of the drive shaft. A further quadrant is arranged in parallel with the toothed quadrant and is fixedly connected to the drive shaft. A two-armed lever is mounted between the toothed quadrant and the further quadrant to be rotatable about a second axis of rotation of a pin which is arranged in parallel with the first axis of rotation on the side, which faces the toothed quadrant, of the further quadrant. The toothed quadrant has a cutout and a projection is arranged on the two-armed lever at the end of the second lever arm of said two-armed lever and is directed into the cutout. The further quadrant has a third stop for the second toothed quadrant.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: April 25, 2006
    Assignee: Siemens AG
    Inventor: Joachim von Willich
  • Patent number: 6994318
    Abstract: The faucet spout attachment includes a handle that is moved by a user during use from a rest position into a rear position or forward position from which the handle is spring-biased back to the rest position when released. A cam is actuated by the handle that allows the handle to be moved into a locked position for hands-free operation. The handle is mounted on the lower housing piece of a two-piece housing that is rotatable relative to the upper housing piece to allow for alignment of the handle for proper use.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: February 7, 2006
    Assignee: Component Hardware Group, Inc.
    Inventor: David J. Burke
  • Tap
    Patent number: 6722624
    Abstract: A tap for a urine drainage system, having a body, a lever and a barrel with a through bore which is mounted in the body for rotation between a position for through flow of liquid and a position which obturates fluid flow. The lever is mounted directly on the body for reversible rotation therearound, the arrangement being such that, on rotation of the lever, the barrel is movable between the two positions.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: April 20, 2004
    Assignee: Coloplast A/S
    Inventors: Jeremy Watson, Richard John Hunter
  • Patent number: 6648296
    Abstract: A hand-operated valve with a locking mechanism is disclosed. This valve includes: a valve main body including a valve body, a valve seat, and a screw mechanism which is actuated to bring the valve body into contact/noncontact with the valve seat; a locking mechanism for preventing actuation of the screw mechanism during a time when the valve body is in contact with the valve seat to close the valve; an operating member connected to the valve main body, for actuating the screw mechanism for contact/noncontact operation of the valve body with respect to the valve seat to thereby close/open the valve; and a play providing mechanism interposed in a connection between the operating member and the valve main body, for preventing the actuation of the screw mechanism during a predetermined stage of operation of the operating member.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: November 18, 2003
    Assignee: CKD Corporation
    Inventors: Katsunori Hirose, Takashi Yajima
  • Patent number: 6568653
    Abstract: A method and apparatus for supplying air to a ported rotary kiln involves the use of butterfly valves and a mechanical valve actuation system for introducing air into the kiln at axially and circumferentially spaced locations along the kiln length. The valve actuation system selectively and sequentially opens and closes the butterfly valves such that port air is introduced into the interior of the rotary kiln. The valve actuation system of the present invention is incorporated with a butterfly valve having a valve housing with an air passageway and including an air inlet and an air outlet, a valve disc rotatable within the housing to open and close the passageway, and a valve stem defining an axis of rotation and connected to the valve member for rotation therewith. The valve actuation system includes an assembly mounted on the valve stem to rotate the valve member between its open and closed positions.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: May 27, 2003
    Assignee: Metso Minerals Industries, Inc.
    Inventor: James D. Foresman
  • Patent number: 5771916
    Abstract: This invention relates to a conduit that is at least partially encased within a containment housing. The containment housing provides structure for containment of fluids from a leaking or totally failed conduit and for automatically shutting off the flow of fluid through the leaking conduit. More particularly, the apparatus comprises at least one conduit that is at least partially received within a containment housing. A valve is attached to the conduit so that it is in fluid flow relationship with the conduit. The valve is biased toward a closed position, but is held in the open position by a release located within the containment chamber, defined as the space between the exterior of the conduit and the interior of the containment housing. When a predetermined fluid leaks from the conduit into the containment chamber the block expands and thereby operatively engages the release so that the valve moves to the closed position blocking the flow of fluid through the conduit.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: June 30, 1998
    Inventors: John G. Armenia, Alfred L. Calciano
  • Patent number: 5725104
    Abstract: An improved dump valve construction for a high density cellulosic pulp cleaner. The cleaner comprises an upper separating chamber and a lower reject chamber which communicates with the lower end of the separating chamber. Cellulosic pulp is pumped tangentially into the upper end of the separation chamber and is swirled within the separation chamber to cause the high density contaminants to fall into the reject chamber while the pulp is discharged through an outlet in the upper end of the separation chamber. The opening between the lower end of the separation chamber and the reject chamber can be opened and closed by a sliding upper valve while the lower end of the reject chamber is formed with an outlet and the flow through the outlet is controlled by a dump valve having a curved or spherical outer surface which seats on an annular valve seat bordering the outlet.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: March 10, 1998
    Inventor: Gerald O. Walraven
  • Patent number: 5667193
    Abstract: A safety shut-off device is disclosed. The device is adapted for use with a gas welding apparatus, the apparatus having a torch handle and a supply of a pressurized combustion reagent. The safety shut-off device has a valving assembly that is adapted to be positioned between the torch handle and the supply of pressurized combustion reagent. The valving assembly is actuatable between a first state and a second state. In the first state, the torch handle is operatively connected to the supply of pressurized combustion reagent. In the second state, the handle is operatively disconnected from the supply of pressurized combustion reagent. The valving assembly is biased towards the second state and actuatable from the first state to the second state substantially instantaneously. The safety shut-off device also has an actuating mechanism. At least a portion of the actuating mechanism is adapted to be positioned on the handle for being grasped by the user of the gas welding apparatus when the user grasps the handle.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: September 16, 1997
    Inventor: Edward R. Chrzanowski
  • Patent number: 5601114
    Abstract: A valve assembly is provided for use in conjunction with a fuel tank having a fill neck and a vent conduit. The fill neck defines a passageway having one end open to the fuel tank and the second end adapted to receive fuel. Similarly, the vent conduit also has one end open to the fuel tank while the other end forms a second vent opening for allowing vapors to escape from the fuel tank during a filling operation. A fuel valve is fluidly positioned in series with the fill neck passageway and, similarly, a vent valve is fluidly positioned in series with the vent conduit. Both the fuel valve and vent valve are movable in unison between an open and a closed position so that, in the open position, fuel flow can occur through the fill neck and, simultaneously, fuel fumes are exhausted through the vent conduit.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: February 11, 1997
    Assignee: Pilot Industries, Inc.
    Inventor: Sean P. Hummel
  • Patent number: 5496010
    Abstract: A urine drainage tap is provided which includes an elongated passage having a barrel disposed therein and a control member located in the barrel which is moveable in relation to the barrel for defining an open and closed position. The lever arm is connected to the control member to permit movement of the control member. In an important aspect of this invention, the lever arm is moveable so as to extend along the passage in substantially opposite longitudinal directions relative to the passage when the control member is in the open and closed positions so as to avoid the tendency for the patient to inadvertently open or close the control member by leaning on the lever arm.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: March 5, 1996
    Assignee: Simpla Plastics Limited
    Inventor: Graham J. Collyer
  • Patent number: 5482085
    Abstract: A fluid control valve includes a spring biased pilot pressure sub-assembly for adjustably setting an initial step pressure. The sub-assembly includes a spring seat and an axially movable spool. The spool includes a body portion having a threaded outer surface. A pair of lock nuts are threaded on the threaded body portion. A pilot spring reacts between the lock nuts and the spring seat. The magnitude of the initial step pressure is dependent upon the magnitude of the force exerted by this pilot spring. The magnitude of this force can be adjusted by changing the position of the lock nuts relative to the spring seat. Because they are threaded onto the spool, rotation of the lock nuts causes axial movement relative thereto. Thus, the position of the lock nuts on the spool can be adjusted simply by rotating them relative to the spool.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: January 9, 1996
    Assignee: Dana Corporation
    Inventor: Jeffrey B. Wasson
  • Patent number: 5076539
    Abstract: A bottom outlet valve for a tank on a vehicle, especially for a railway tank car. The valve comprises a valve body including a valve seat, a valve stem spring biased toward the closed position against the seat and an operator assembly for mechanically opening and closing the valve stem. The operator assembly may be removed from the valve body in an improved facile manner by means of bolts all located exterior of the operator housing. A lost motion linkage allows the stem to seat under spring pressure even though the stem seals have become worn. The assembly has been uniquely designed to permit easier and safer installation and maintenance of the valve due in part to an improved stem cage assembly.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: December 31, 1991
    Assignee: ACF Industries, Incorporated
    Inventor: Jan D. Holt
  • Patent number: 5069249
    Abstract: A sanitary fitting contains a closing component (9) which can be moved to vary the quantity of water flowing. A movement brake (23, 24) is provided to prevent excessively fast closing speeds. A spring component (35) is provided in the transmission path (16, 20, 21) between the handle which the user holds and the closing component (9). Through this spring component it is possible for the movement of the handle to be decoupled from the movement of the closing component (9) under the effect of the brake (23, 24) so that very fast movements of the handle are not followed and that, instead, the closing component moves with a time delay and below a permitted maximum speed (FIG. 3).
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: December 3, 1991
    Assignee: Hansa Metallwerke AG
    Inventors: Ulrich K. Ostertag, Reinhard F. Ostertag
  • Patent number: 5024416
    Abstract: The problem of providing a very compact and simple actuator system (10) for a rotary valve (40) operated by a rotatable shaft (44) and effecting a specific valve program to select a desired flow rate through the valve (40) is provided by an actuator member (12) movable in a linear path (A) transverse to the axis of the shaft. The actuator member (12) is linearly movable through a stroke range to effect changing the angular settings of the shaft (44) to move the valve (40) from an open position to a closed position and back to an open position in response to a single unidirectional stroke of the actuator member (12). A pair of link arms (26a, 26b) operatively connect the actuator member (12) and the shaft (40) for transmitting linear movement of the actuator member to angular movement of the shaft. The link arms are pivotally connected to each other at adjacent ends (28).
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: June 18, 1991
    Assignee: Sundstrand Corporation
    Inventor: Mordechai Cohen
  • Patent number: 4911402
    Abstract: A material handling valve includes a housing having a vertical passageway therethrough and a seating surface extending around the lower end of the passageway. A support arm within the passageway has one end supported on the housing for pivotal movement about a horizontal first axis and has a tipping part at its opposite end. A valve member disposed below the housing is pivotally supported on the support arm. The valve member has on an upper side thereof a sheet of resilient material, and pivotal movement of the support arm moves it between positions in which the resilient sheet is respectively engaging and spaced from the seating surface to respectively obstruct and permit material flow. An actuating arm is pivotally supported about a second axis parallel to the first axis near an upper end of the housing, and a linkage arrangement operatively couples the actuating arm and support arm so that movement of the actuating arm effects pivotal movement of the support arm and valve member.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: March 27, 1990
    Assignee: Harborlite Corp.
    Inventors: William G. Blunt, Eugene C. McGlashen
  • Patent number: 4875449
    Abstract: In order to prevent troublesome load change shocks in an internal combustion engine for a vehicle, the power control element thereof consists of an adjustment lever operationally positioned between two spring stops. The first spring stop provides elastic transmission of accelerator pedal commands from a fuel control cable and the second spring stop, which comprises a stronger spring, is effective only after the adjustment lever moves through a preset free path and engages a support fixed on the housing. As a result, during a fuel control cable motion defined by the first spring stop, the adjustment lever is not moved, whereas thereafter, during a further fuel control cable motion, the adjustment lever is moved since the force of the spring associated with the second stop is overcome.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: October 24, 1989
    Assignee: Volkswagen AG
    Inventors: Karl-Martin Kramer, Richard Dorenkamp
  • Patent number: 4852852
    Abstract: A 2-port, 2-directional hydraulic valve is disposed alongside a pulse generator in a casing, the actuating force of the pulse generator being transmitted to a push rod of the valve for actuating the latter via a two-armed lever mounted like the beam of a balance. A threaded bore in one lever arm receives a bush which is adjustable in the direction of actuation and contains a spring-loaded pressure member. A set screw can be used to pre-stress the spring and thus exactly adjust the transmitted actuating force, while the adjustable bush is used for pre-setting the actuating travel.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: August 1, 1989
    Assignee: Hermann Henscheidt Maschinenfabrik GmbH & Co.
    Inventors: Karl Krieger, deceased, Werner Reinelt, Wolfgang Kobow
  • Patent number: 4721281
    Abstract: An actuating device is proposed which is used to adjust a throttle valve disposed in the intake tube of an internal combustion engine. The actuating device includes a gas pedal adapted to engage an actuating lever, which is supported rotatably relative to a throttle valve shaft, so as to pivot counter to the force of a restoring spring. Connected to the actuating lever is a follow-up drawing spring, which is secured with one end to an intermediate lever provided with a cam disk having a curved camming surface which surface a lever arm is supported so as to operate a damper element. The intermediate lever is rotatably supported with respect to the throttle valve shaft and with a coupling stop engages a throttle valve lever, which is connected to the throttle valve shaft such that relative rotation between them is prevented. The throttle valve lever is drawn against the coupling stop by means of an uncoupling spring disposed between the intermediate lever and the throttle valve lever.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: January 26, 1988
    Assignee: Robert Bosch GmbH
    Inventors: Alfred Kratt, Hermann Nusser, Gunther Plapp, Helmut Schwarz
  • Patent number: 4671484
    Abstract: A gas valve having a cantilevered bi-metal arm subject to electrically energized heating regulates fluid flow between a fluid inlet and fluid outlet. A poppet is preloaded for seating with a valve seat and further includes a disc member to inhibit valve teasing. Projecting fingers from the arm operatively engage the disc member to provide consistent, repetitive movement between the poppet, arm, and valve seat so that the valve is uniformly opened and closed under various operating parameters.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: June 9, 1987
    Assignee: Eaton Corporation
    Inventors: Frank H. Bergquist, Donald W. Cox
  • Patent number: 4598895
    Abstract: A valve having a body with an inlet duct, an outlet duct and a plug rotatably disposed in the body. The plug has a port to provide for fluid communication between the inlet and outlet ducts and is movable between an open position wherein the port at least partially registers with both the inlet and outlet ducts to pass fluid through the valve to a closed position wherein no part of the port registers with the ducts, thereby preventing fluid from passing through the valve. The valve has a pressurizable seal between the body and plug, when the plug is at both the open and closed positions. To actuate the seal, a closed hydraulic system is provided. A regulator piston is urged against the pressure of the hydraulic system with a preselected force to regulate the hydraulic pressure. The valve also includes a mechanism to compensate for hydraulic fluid thermal expansion.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: July 8, 1986
    Assignee: Precision Technologies
    Inventors: Carl O. DeWald, Jack H. Pollock
  • Patent number: 4508314
    Abstract: A gas valve of the type having a movable resilient poppet attached to the free end of an electrically heated cantilever bi-metal arm. The poppet is preloaded by the arm to the closed position against a valve seat by the bi-metal arm and is lifted by warping the bi-metal arm with a predetermined electrical current. The poppet has a necked position received through an aperture near the free end of the arm. An annular bead ring is formed on the poppet and surrounds the neck. The annular bead is resiliently contacted by the surface of the arm in the preloaded condition.
    Type: Grant
    Filed: January 18, 1984
    Date of Patent: April 2, 1985
    Assignee: Eaton Corporation
    Inventor: Wilbur F. Hemme
  • Patent number: 4497467
    Abstract: A rotary plug valve has hydraulically actuated seals for sealing between a valve body and a rotatable valve plug. The valve plug is rotated to open or close the valve. A valve handle for turning the plug can be rotatably uncoupled from the valve plug when the valve is closed and turned relative to the plug toward an overtravel position to actuate a hydraulic piston to pressurize the seals. A second piston regulates pressure to the seals and prevents overpressurization.
    Type: Grant
    Filed: September 15, 1982
    Date of Patent: February 5, 1985
    Inventors: Carl O. DeWald, Jack H. Pollock
  • Patent number: 4334648
    Abstract: An air conditioning system including an air flow limiter and indicator comprising, in combination: a chamber (24) extending from an inlet (21) to an outlet (22) for flow therebetween of conditioned air at greater than ambient pressure; a damper (63) in the chamber actuable to variably restrict the flow; apparatus outside the chamber, including an inflatable member (66) having inlet (70) and venting (42) openings, for actuating the damper in accordance with the state of inflation of the member; condition-responsive apparatus, including a fluid amplifier (72) supplying fluid from the chamber to the inlet opening, for causing inflation and deflation of the inflatable member; apparatus including a vane (32) in the conduit for responding to the rate of flow of the fluid in the conduit; apparatus (41, 57) normally closing the venting opening; and apparatus (43, 45, 55) operable by the vane as the rate of flow exceeds a predetermined value for unclosing the venting opening, to enable deflation of the inflatable mean
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: June 15, 1982
    Assignee: McQuay-Perfex Inc.
    Inventors: Randy L. Buth, Robert A. Essig
  • Patent number: 4312373
    Abstract: An internal valve for the bottom loading of fuel tanks consists of a differential area piston acting within a chamber which is vented by a pair of pilot valves responsive to fluid level, to provide full open, throttled and closed positions of the valve automatically in response to inlet fluid pressure. Soft closure of the inlet valve which is formed of the piston head and a seat in the valve housing, is provided by metered fluid flow through an orifice between a sized aperture in the piston head and a restrictor sleeve carried on a tank vent actuator bar extending through the aperture and through the valve housing. A lost motion connection between the piston head and actuator bar allows limited relative movement for controlling the metering orifice and combined movement for coincident opening of the tank vent in response either to inlet fluid pressure or manual actuation.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: January 26, 1982
    Assignee: Parker-Hannifin Corporation
    Inventors: Basil B. Tilling, Henry A. Swindler
  • Patent number: 4255985
    Abstract: A three-bale load is accumulated on the trailer as bales issue from the rear of the baler, whereupon the accumulated bales may be dumped all at the same location or singly as may be desired. Successive bales issuing from the baler arrive at a central platform from which they are alternately distributed to laterally disposed side platforms in an automated procedure. Once a side platform receives its bale, lockout mechanism prevents the transfer device from presenting the side platform with another bale until such time as the previous bale has been dumped. Once a bale has been dumped from a platform, the transfer device is automatically actuated, if indeed the next bale is ready to be transferred, for loading of the next bale onto the awaiting side platform.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: March 17, 1981
    Assignee: Hesston Corporation
    Inventors: Thomas G. Schrag, Amos G. Hill, Howard R. Lohrentz
  • Patent number: 4226814
    Abstract: An automotive type carburetor has a rotatable lever connected to the choke valve and to an actuating link having a pin-slot type connection to an engine vacuum controlled servo, a fast idle cam is connected to the choke lever by a lost motion pin and slot connection and to a second actuating link also connected to the servo by a pin-slot type connection, the servo pin-slot connections to the links are such that when the engine is started with the choke valve closed and the fast idle cam on its high cam step, vacuum applied to the servo during a first stage movement rotates the choke lever to open the choke valve and subsequently during a second stage movement both the choke lever is rotated further and the fast idle cam is rotated off its fast idle step position, to reduce the opening of the throttle valve while opening further the choke valve, the first stage movement of the servo moving a diaphragm and plunger until the plunger blocks a main vacuum feed line to the diaphragm, the second stage movement movin
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: October 7, 1980
    Assignee: Ford Motor Company
    Inventor: John Dirda
  • Patent number: 4224959
    Abstract: A clamp usable in the mounting of a lever-actuated valve unit on a fitting, and in the operation of a lever on such unit when the unit is so mounted, where mounting is accomplishable through the rotation of a nut in the fitting relative to the valve unit, and lever actuation is accomplishable through the use of an actuator placed in a selected position adjacent the lever. The clamp includes a portion adapted for clamping onto the nut in the fitting, and an extension portion designed for use in rotating the clamp, with the latter clamped onto the nut. The extension portion is adapted for supporting the actuator, with the unit so mounted, in its selected position adjacent the lever.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: September 30, 1980
    Assignee: Custom Systems Associates, Inc.
    Inventor: James L. Fling
  • Patent number: 4182488
    Abstract: A pressure regulator has a diaphragm controlled valve and a temperature responsive means for adjusting the loading on the diaphragm to provide a pressure control from a maximum pressure to a minimum pressure in a modulating manner as the temperature changes. The temperature responsive means operates a lever for varying the spring loading on the diaphragm which is accomplished by a resilient biased pin and a C-shaped spring so that when the pin is lifted by the lever to reduce the force on the C spring, the C spring provides for a broadening of the force on the diaphragm and thus widening the modulation range of pressure for a given range in temperature.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: January 8, 1980
    Assignee: Honeywell Inc.
    Inventor: Hendrikus Berkhof
  • Patent number: 4158367
    Abstract: A valve actuator, for example a mechanism for imparting motion to a blast furnace evacuation valve, includes a force generator which is coupled to the valve member by a displacement mechanism including a pivotal lever and a pivot arm. The pivotal lever has a pair of angularly related arms with the free end of one arm being coupled to the force generator and the free end of the second arm being coupled to a point on the pivot arm intermediate the ends thereof by a connecting rod or rods. The pivot arm is connected to the valve member and the connecting rod or rods are articulated to both the pivot arm and to the second lever arm which may be telescoping.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: June 19, 1979
    Assignee: S.A. des Anciens Etablissements Paul Wurth
    Inventor: Pierre H. Mailliet
  • Patent number: 4017221
    Abstract: A hydraulic fluid circuit comprises an engine-driven pump for communicating pressurized fluid through a combined unloading and relief valve and to an implement control circuit of a construction vehicle. Actuating means are provided for selectively opening the valve during engine start-up to reduce fluid pressure in the valve and implement control circuit to a first predetermined level. An override means is operatively connected to the actuating means for preventing the valve from opening when the fluid pressure exceeds a second predetermined and operating level which is higher than the first predetermined level.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: April 12, 1977
    Assignee: Caterpillar Tractor Co.
    Inventor: Joseph E. Dezelan
  • Patent number: 3944135
    Abstract: A condition responsive valve construction having a housing provided with a valve seat. A pair of metallic balls are secured together in abutting relation and are movable toward and away from the valve seat so that one of the balls acts to open and close the valve seat. A lever is movably mounted in the housing and acts between the balls to cause movement thereof upon certain movement of the lever caused by a condition responsive means sensing different conditions. Spring means are provided for tending to hold the balls in the valve seat closed position thereof and in a certain valve seat open position thereof so that the lever can have lost motion travel between the balls for creating a differential in the conditions required to open and close the valve seat.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: March 16, 1976
    Assignee: Robertshaw Controls Company
    Inventor: Fred Kalinovski
  • Patent number: 3942757
    Abstract: A spring biased poppet valve has the exposed end of its poppet plunger engaging the underside of a lever, and the poppet and lever are biased upwardly so that a tit on the upperside of the lever engages a cam surface defined on a cam member loosely mounted on a generally horizontal rock shaft. The shaft can be moved through an angular range of displacements as part of a normal control system, which system receives fluid operating pressure through the open poppet valve. An adjustable stop screw mounted to the shaft is so oriented that the cam member is positively moved about the axis of the shaft when the shaft has reached a predetermined angular displacement, whereby further movement of the shaft permits the spring loaded poppet valve to close.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: March 9, 1976
    Assignee: United Technologies Corporation
    Inventors: Kenneth B. Hansen, Robert K. Olson