Linear Reciprocation Of Rotary Handle Patents (Class 251/96)
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Patent number: 5551124Abstract: A faucet safety handle for use in conjunction with a valve having a rotatable valve stem. The faucet safety handle includes a knob having an aperture therethrough, a clutch mechanism interposed between the knob and the valve stem such that in use the knob rotates freely with respect to the valve stem when the knob is in a first predetermined position and the valve stem rotates in conjunction with the knob when the knob is in a second predetermined position, and a connecting mechanism for functionally securing the knob to the valve stem.Type: GrantFiled: April 26, 1995Date of Patent: September 3, 1996Inventor: Clay M. Zeringue
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Patent number: 5520367Abstract: An anti-syphon valve comprises a base pipe having inlet and outlet legs and a valve seat, disposed at the top of the base pipe within a valve stem post, which can be rotated selectively to block the inlet leg (closed position) or open it (open position). A metering peg extends from the valve stem post into a receptacle in the valve seat. Inlet and outlet passages corresponding to the inlet and outlet legs are disposed above the seat, and a float located at the top of the inlet passage allows fluid flow from the inlet passage into the outlet passage in the open position while blocking fluid flow from the outlet passage to the inlet passage in the closed position. Vent passages are provided above the float to enable communication of the outlet passage to atmosphere in the closed position. A handle is provided on the valve stem post to selectively rotate the latter to place the valve in open or closed position.Type: GrantFiled: September 26, 1994Date of Patent: May 28, 1996Assignee: Environmental System & Solutions, Inc.Inventor: Scott B. Stowers
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Patent number: 5513831Abstract: The present invention entails a safety control knob for actuating a valve stem of a water valve such as typically found in a hot water line. The safety control knob includes a control knob rotatively journaled on a valve stem and movable thereon between an inoperative and an operative position. In the inoperative position the control knob is effective to simply free-wheel around the valve stem without actually turning the valve stem. In an operative position, the control knob assumes a position engaged with a collar or other member that is keyed to the valve stem. In the engaged position, the control knob is operative to turn and actuate the valve stem.Type: GrantFiled: May 17, 1995Date of Patent: May 7, 1996Inventor: Alfred L. Seward
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Patent number: 5492145Abstract: An anti-syphon valve comprises a base pipe having inlet and outlet legs and a valve seat, disposed at the top of the base pipe within a valve stem post, which can be rotated selectively to block the inlet leg (closed position) or open it (open position). A metering peg extends from the valve stem post into a receptacle in the valve seat. Inlet and outlet passages corresponding to the inlet and outlet legs are disposed above the seat, and a float located at the top of the inlet passage allows fluid flow from the inlet passage into the outlet passage in the open position while blocking fluid flow from the outlet passage to the inlet passage in the closed position. Vent passages are provided above the float to enable communication of the outlet passage to atmosphere in the closed position. A handle is provided on the valve stem post to selectively rotate the latter to place the valve in open or closed position.Type: GrantFiled: September 26, 1994Date of Patent: February 20, 1996Assignee: Environmental System & Solutions, Inc.Inventor: Scott B. Stowers
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Patent number: 5490660Abstract: A manual device for a valve has: a movable valve opening member sustained rotatably and disposed in a valve body; an opening and closing of the valve for controlling the opening and closing oi a fluid passage; a notch plate connected with one end of a stem which is pivotably sustaining the valve; a notch plate moving freely in axial direction on the stem and which rotates synchronously with the stem; a manual and oprative knob adhered to the notch plate; a casing adhered to the valve body, so that the casing stores the notch plate and guides the movement of the notch plate freely in the axial direction and guides rotation of the notch plate; a notch means preventing the extra rotation of the notch plate by mutual engagement between the notch plate and the casing; and a notch plate which is constantly pressurized to keep the engagement.Type: GrantFiled: January 17, 1995Date of Patent: February 13, 1996Assignee: Tomoe Technical Research CompanyInventor: Jiro Kamezawa
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Patent number: 5364065Abstract: A push control faucet handle is provided for a sink having a spout which consists of a housing mounted to the sink. A water control valve is connected to bottom of the housing. The water control valve has a first pipe line connected to a water supply and a second pipe line connected to the spout in the sink. A knob rides within the housing and is adjustably coupled to the water control valve. A device is for biasing the knob to a raised position above a top surface of the sink. The knob can be manually rotated to open and close the water control valve to control the flow of water from the water supply to the spout in the sink. A mechanism is for retaining the knob in a lowered position flush with the top surface of the sink, when the knob is pressed down into the housing and for releasing the knob so it will return to the raised position when the knob is pressed again. When the knob is in the lowered position a young child will have difficulty in reaching and operating the knob.Type: GrantFiled: September 9, 1993Date of Patent: November 15, 1994Inventor: Reef L. Tauati
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Patent number: 5332001Abstract: A ball valve coupling includes a pair of identical ball valve units adapted for mounting onto a respective pair of fluid flow conduits, such as fuel hoses in a fuel handling environment. The two ball valve units are releasibly connected in in-line, face-to-face relation by interengageable lock lugs, and further include individual ball valves rotatable between open and closed positions to control fluid flow therethrough. Each ball valve unit includes a safety lock-out key engaged by a lock lug on the other ball valve unit as the coupling is assembled, wherein the lock-out key precludes ball valve rotation to the open position unless the two ball valve units are fully and properly engaged in sealed relation. The lock-out key of each ball valve unit further precludes coupling disassembly unless the ball valve is first returned to the closed position.Type: GrantFiled: August 2, 1993Date of Patent: July 26, 1994Assignee: J. C. Carter Company, Inc.Inventor: Albert W. Brown
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Patent number: 5299597Abstract: A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle extending from the valve body has a mounting means to secure the assembly to the spindle, a handle portion connected to the mounting means and a pivotally mounted locking member. The locking member is pivotable, either by camming surfaces on the handle portion and the locking member or by a key, between a first, locked position in which it engages with a portion of the valve body, and a second, unlocked position in which it is free from the valve body and enables the valve spindle to be rotated by the handle portion.The locking member is provided with a number of apertures which can be aligned with corresponding apertures in the mounting means and the handle portion when the locking member is in its locked position. The apertures are shaped to receive tamper-sensitive tape or wire or the shackle of a padlock, to indicate or prevent unauthorized use of the valve.Type: GrantFiled: September 3, 1991Date of Patent: April 5, 1994Assignee: Fort Vale Engineering LimitedInventors: Edward S. Fort, Alan G. Smithson
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Patent number: 5284178Abstract: An improved butterfly valve for intercepting a conduit where substances flow, especially suitable for the pharmaceutical, alimentary and chemical fields The valve comprises an annular body (1) integral with the conduit and acting as a support for the rotation stem (4) of the butterfly valve dish (3), which is operable at one end by an actuating lever (6) to open or close the internal port of the annular body (1) where a sealing member (2), tightly engaging with the butterfly valve dish (3) in the closed position, is housed. The body (1) comprises means for allowing an extremely quick and easy mounting and dismounting operations for cleaning purposes without affecting the sealing ability, operability and minimum flow resistance when the valve is fully open. The sealing member (2) is shaped to require a low effort while closing the valve as well as assuring the seal even in correspondence of the stem (4) of the butterfly valve dish (3).Type: GrantFiled: January 15, 1993Date of Patent: February 8, 1994Assignee: CO.I.RA. S.R.L.Inventor: Salvatore Lardieri
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Patent number: 5161568Abstract: An improvement in a valve and coupling device for pressure lines utilized in transferring air or water under pressure to provide a safety lockout feature in which the valve control sleeve can be held in open or closed position in a positive manner by an ancillary lock. The improvement comprises a modified control sleeve and clamping jaw dependent on the valve coupling configuration used in relation to the connection requrirement.Type: GrantFiled: August 14, 1991Date of Patent: November 10, 1992Assignee: Keen Manufacturing, Inc.Inventor: Terry K. Turvey
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Patent number: 5076308Abstract: An indicator for measuring the amount of closure of a valve with a valve handle mounted adjacent a valve bearing housing. A pointer for the indicator being mounted between the valve handle and valve bearing housing. To show the amount the valve is open the indicator pointer is firmly attached to the valve drive shaft. A slot is provided in the valve handle so that the relationship of the indicator pointer to the valve bearing housing can be seen, and rotation stubs are included on the valve handle which can abut against the indicator pointer so the valve drive shaft can be turned using the valve handle.Type: GrantFiled: November 19, 1990Date of Patent: December 31, 1991Assignee: Sundstrand CorporationInventor: Mordechai Cohen
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Patent number: 5037066Abstract: The valve comprises a rotating operating wheel (32) acting on a closing element (20) inside the body (10) of the valve. In order to enable the wheel (32) to be operated easily and at the same time to prevent accidental opening, the wheel (32) is connected to the closing element via a ratchet system (34) with sawteeth which are oriented so as to prevent the closing element (20) from opening without prior axial displacement of the wheel (32) counter to the action of a spring (44).Type: GrantFiled: August 23, 1990Date of Patent: August 6, 1991Assignee: Ceodeux S.A.Inventors: Leon Kerger, Paul Kremer
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Patent number: 4969586Abstract: A delivery chute flow control device is disclosed. The device has a body portion which mates with the remainder of the delivery chute. Affixed to one end of the body portion is a rotatable door which is used to control the flow of material. A locking mechanism is provided as a way of securing the door in a fixed position.Type: GrantFiled: June 20, 1989Date of Patent: November 13, 1990Inventor: Michael Ostroski
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Patent number: 4865078Abstract: A manual control valve for a remotely operated munitions magazine sprinkler valve employs a compact body, a pressure input port and first and second output ports to which are secured tubular seat housings, each carrying a valve seat. First and second poppets are slidably mounted in the tubular seat housings and are spring urged to closed position. One or the other of the poppets is pulled open by means of a handle operated rotary cam, which allows both poppets to be closed by spring and water pressure. A modified valve configuration provides a three-way valve.Type: GrantFiled: March 1, 1989Date of Patent: September 12, 1989Assignee: Cla-Val Co.Inventor: Harold W. Ensign
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Patent number: 4844415Abstract: A valve, which is especially suited for use in connection with a urine bag, has a cylindrical valve body, which is displaceably and rotatably mounted in a tubular valve housing having a transverse flow passage defined therein. A projection formed at one end of the valve body may be brought into engagement with a cut-out or notch in the adjacent end of the valve housing. In this position in which the projection engages with the notch, the valve is open, because the transverse bore of the valve body is aligned with the flow passage. The valve may be closed by displacing the valve body in relation to the valve housing so as to bring the projection out of engagement with the notch, and the valve body may be rotated in relation to the valve housing, if desired. The engagement between the projection and the notch ensures that the transverse bore of the valve body extends coaxially with the flow passage in the open position of the valve.Type: GrantFiled: January 19, 1988Date of Patent: July 4, 1989Assignee: Asicomo A/SInventors: Ole S. M. Nielsen, Franz Primdahl
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Patent number: 4821772Abstract: A dual active selector valve is set forth. In the preferred and illustrated embodiment, a flange supporting a manifold body is attached to a pressure vessel. The passage through the flange has a selected diameter and the manifold body opens out to a larger diameter, sufficient to enable two valves to be connected side by side, having inlet passages equal in diameter to about one half the selected diameter. A rotatable conduit member is mounted within the manifold body having a centrally located pin for rotation, the rotatable portion incorporating separate flow passages selectively connecting to one of the two alternately deployed valves, and also supporting a valve closure plate to plug the passageway into the valve not being used.Type: GrantFiled: April 2, 1985Date of Patent: April 18, 1989Assignee: Anderson Greenwood & Co.Inventors: William L. Anderson, Jr., Larry A. Sample
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Patent number: 4819907Abstract: A gas tap for a gas cooker or hob includes a rotary disc valve (20) which controls the flow of gas from a gas rail (1) to a gas burner of the cooker or hob. To simplify the tap construction and facilitate manufacture, an external surface (2) of the gas rail (1) is used to form part of the tap housing and to provide the seating surface for the disc valve (20).Type: GrantFiled: January 25, 1988Date of Patent: April 11, 1989Assignee: New World Domestic Appliances LimitedInventor: Benjamin F. Gostelow
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Patent number: 4762144Abstract: A cover for a valve (10) has a housing (20) mounting internally a component (24), with a collet (28) being located with play through an open end of the component (24). Resiliently deformable jaws (36) of the collet (28) co-operate with a profiled inner wall of the component (24) for opening and closing of the jaws (36) upon axial movement of the collet (28) relative to the component (24). When positioned on a stem (12, 14) of the valve (10), the cover is movable downwardly thereon to operate the valve and is freely rotatable, but on movement upwardly the cover is clamped by closing of the jaws (36) on the stem (12, 14). The housing (20) is formed of a material with a high degree of resistance to vandalism.Type: GrantFiled: February 27, 1987Date of Patent: August 9, 1988Assignee: Ford-Manwaring LimitedInventor: John Ford
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Patent number: 4691895Abstract: A handle for use in association with a fluid valve is disclosed. The handle includes a base member securely mounted to a spindle of the valve to be actuated. The base member includes at least one slot therein. A drive spindle having at least one hook-like extension fitted thereto is positioned in part within the base member. The hook extension is biased out of contact with the slot by a spring means. In operation, the user must depress the drive spindle thereby inserting the hook extension into the base member slot in order to activate the valve. The handle includes means of locking the drive spindle into an actuating contact with the base member.Type: GrantFiled: July 18, 1986Date of Patent: September 8, 1987Inventor: Jeffrey L. Garff
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Patent number: 4667931Abstract: A cam-actuated valve is provided which includes a valve chamber having a poppet valve therein. A diaphragm separates the exterior of the valve body from fluid contained within the valve chamber. An actuator sleeve is positioned on the body for rotational and longitudinal motion. The vlave sleeve is spring-biased into a closed or "off" position by moving the actuator sleeve against the biased spring and rotating the spring about thirty degrees. The valve is moved to the "open" position. A cam forces a ball to move in a radial direction so as to open the poppet of the valve and thereby allow fluid to flow from an inlet to an outlet through the valve assembly. Locking means are provided whereby the valve is locked in the closed position.Type: GrantFiled: November 1, 1985Date of Patent: May 26, 1987Assignee: Wingaersheek Division of Victor Equipment Co.Inventors: Allen C. Egert, Charles J. Casey, Claudio P. Negro
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Patent number: 4651905Abstract: A dispensing package is described for toothpaste or similar products. The package has a product chamber which is filled with the product and a propellant and has a valve operated nozzle including a reed-type outlet in which operation of a valve button causes the product to flow outwardly through the normally closed reed opening. The nozzle including the reed-type outlet is molded plastic of generally conical form adapted to fit over the product and propellant container.Type: GrantFiled: June 26, 1985Date of Patent: March 24, 1987Assignee: Anchor Hocking CorporationInventor: Thomas H. Hayes
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Patent number: 4629157Abstract: A remote-control apparatus for opening or closing a container is disclosed, which includes a rotary drive mechansim, an operable shaft driven by the drive mechanism, and a drive wheel mounted on the operable shaft, the drive wheel being held on the operable shaft by a collar. The drive wheel has at one end teeth members which engage notches formed in the peripheral edge of a valve wheel of the container. When the drive mechanism is activated, the operable shaft turns the drive wheel, which causes the valve wheel of the container to turn, thereby causing the valve of the container to either open or close.Type: GrantFiled: November 30, 1984Date of Patent: December 16, 1986Assignee: Japan Oxygen Co., Ltd.Inventors: Yuji Tsuchiya, Hiroshi Ando
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Patent number: 4585208Abstract: The invention relates to a thermostatic type valve for a hot water radiator. The valve has an adjustable insert for changing the throttle setting of the valve. An intermediate setting element has a spline connection with the insert to facilitate turning of the insert. An adjusting ring likewise has a spline connection with the setting element and also a spline connection with the valve housing which facilitates securing the intermediate setting element to the housing. The adjusting ring is axially moveable relative to the valve housing by reason of the spline connection therewith to permit disengagement therefrom and allow turning of the setting element and the adjustable throttle setting insert to which it is nonrotatably connected by the first referred to spline connection.Type: GrantFiled: December 30, 1983Date of Patent: April 29, 1986Assignee: Danfoss A/SInventors: Erik E. Andresen, Jorgen Abildtrup
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Patent number: 4549716Abstract: A handle arrangement for a hot water tap or faucet which requires an axial and rotational movement of the handle in order to turn the tap "on" or a rotational movement only, in order to turn the tap "off". When applied to a hot water tap the handle arrangement provides a safety device against rotation by young children as the combination of movements is difficult or impossible for young children to overcome. The arrangement comprises a spindle member 11 which is attached to an existing tap spindle 18 by grub screws 19 and co-operates with a drive member 13 fixed to the handle to provide a ratchet arrangement between a drive member 13 and spindle member 11. The ratchet arrangement allows the tap to be turned off merely by rotation of the handle but does not engage when the tap is rotated in the direction to turn the tap on. A hexagonal protrusion 14 inside the handle co-operates with the handle member 11 to cause rotation of the handle when the handle is depressed axially inwardly.Type: GrantFiled: December 15, 1983Date of Patent: October 29, 1985Inventor: Timothy P. Warren
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Patent number: 4436116Abstract: A four-way valve for use in a railroad air brake system has a housing with an internal chamber and a plurality of ports in communication with the chamber. Two of the ports are adapted for connection to a railroad car brake pipe with an intermediate port being adapted for connection to the railroad car air brake system. A valve member is movable within the chamber between a plurality of positions, there being a position to close each port and a neutral position in which all ports are in communication with the chamber. The improvement is specifically directed to a seal member carried by the valve member and spring means which urge the seal member outwardly of the valve member and toward the described ports. Each port has seal means which include a floating seal ring within each port, with each floating seal ring being positioned for sealing contact with the valve member seal member.Type: GrantFiled: August 24, 1981Date of Patent: March 13, 1984Assignee: Sloan Valve CompanyInventor: Henry R. Billeter
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Patent number: 4284099Abstract: A frost-proof fire hydrant of the type wherein the valve is biased to its closed position by the fluid pressure in the shoe. The fire hydrant includes improved means disposed in the bonnet and cooperating with the valve stem for maintaining the valve in the closed position in the event of decreased water pressure in the shoe.Type: GrantFiled: April 30, 1979Date of Patent: August 18, 1981Inventor: Sultan A. Rifat
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Patent number: 4232748Abstract: A pneumatically operated stone-working tool has a tool drive, a spraying device for spraying the work area with a liquid and a control assembly for opening and closing the pneumatic line. The control assembly includes a valve plunger rotatably and linearly displaceably received in a chamber which is in the path of a pneumatic line feeding the tool drive and a liquid line feeding the spraying device. The plunger has a first linear position in which it maintains the pneumatic line closed regardless of the angular position of the plunger and a second linear position in which it maintains the pneumatic line open solely when the plunger is manually rotated into an "open" angular position. A force-exerting arrangement continuously urges the plunger towards its first linear position. The plunger has a work face so oriented that it is continuously exposed to a pressure of the liquid in that part of the chamber which is in communication with the liquid line.Type: GrantFiled: May 7, 1979Date of Patent: November 11, 1980Assignee: SIG Schweizerische Industrie-GesellschaftInventor: Hans Thoma
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Patent number: 4209163Abstract: A dump valve assembly for opening and fluid-tightly sealing the drain outlet of a waste tank, the assembly comprisng a rotatable elongated shaft having a handle at its upper end and a first or lower compression plate adjustably secured to its lower end. Disposed concentrically about the shaft are a first and second tubular member, the former having a length less than that of the shaft, and the latter having a length less than that of the first tubular member. Fixedly secured to the lower end of the first tubular member is a second or upper compression plate spaced from the lower plate. Sandwiched and pre-loaded between the upper and lower compression plates is a valve plug made of an expandable material. The shaft is provided with a double-thrust ball bearing which abuttingly engages the upper end of the first tubular member to permit independent rotation of the shaft relative to the former member.Type: GrantFiled: January 12, 1978Date of Patent: June 24, 1980Inventor: Robert A. Nordskog
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Patent number: 4177835Abstract: Manifold assembly having a plastic body with intersect flow passages and valve members for controlling communication between the passageways. Stops limit the movement of the valve members between predetermined positions, and the valve members can be removed from the body and reinstalled in reversed position to provide fixed communication between certain of the passageways. Externally threaded nipples are provided for connecting the assembly to external fixtures, and resilient sleeves are inserted between the valve members and the body to form fluid tight seals.Type: GrantFiled: September 29, 1976Date of Patent: December 11, 1979Inventor: Hyman W. Paley
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Patent number: 4157786Abstract: A thermostatic gas valve includes a thermostatic valve for regulating the temperature of a burner and a manually operable valve for regulating the flame height. The operation of the manual and thermostatic valves is controlled by a stem. The valve includes a shaft coupled to the stem that is axially movable from an off position to a first position. In the first position the shaft is rotated to rotate the manual valve. The shaft may then be axially moved to a second position and rotated to rotate the thermostatic valve to the desired position. The shaft is locked in a first non-rotatable position and prevented from being axially moved by a locking element.Type: GrantFiled: May 31, 1977Date of Patent: June 12, 1979Assignee: Harper-Wyman CompanyInventor: Frank H. Bergquist
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Patent number: 4137945Abstract: A gas tap comprising: a body portion, a housing, metering means and a control device, wherein said body portion includes an inlet port in gas communication with an inlet chamber and an outlet port, said metering means being adapted to be in gas communication with said inlet chamber and being operable, responsive to movement of said control device, to govern the amount and rate of gas flow from said inlet chamber to said outlet port.Type: GrantFiled: May 25, 1977Date of Patent: February 6, 1979Assignee: W. A. Deutsher Pty. Ltd.Inventor: Ronald G. Cutts
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Patent number: 4109673Abstract: A combination gladhand and shutoff cock includes a dust cover attached to the shutoff cock operating handle and closing the gladhand body air outlet when the shutoff cock is in a closed position. There is a latch effective between the shutoff cock handle and the gladhand body holding the shutoff cock in a closed position and a further latch between the shutoff cock handle and the gladhand holding the handle in an open position.Type: GrantFiled: August 23, 1976Date of Patent: August 29, 1978Assignee: Sloan Valve CompanyInventors: Charles Horowitz, Frederic Lissau
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Patent number: 4078763Abstract: This invention relates to a shut-off valve type oil extractor that can be screwed into an oil pan in a vehicle engine or the like, and more particularly it relates to an oil extractor of the said type which is characterized particularly in that it is locked in a shut-off state so that it won't be inadvertently opened by mechanical vibration caused during running of the vehicle.Type: GrantFiled: August 4, 1976Date of Patent: March 14, 1978Inventor: Naoyuki Yamamoto
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Patent number: 4029291Abstract: In a locking-type gas valve having a plug rotatable by a stem having a portion which is pushed axially inwardly against a spring bias to disengage a projection thereon from a locking recess in a cap on the valve body, improved structure wherein the cap comprises a single flat plate having a slot therethrough forming the locking recess, the slot being adjacent a screw which secures the cap on the valve body and the screw having a washer which overlies the slot and retains the projection within the cap against the spring bias acting on the stem.Type: GrantFiled: April 2, 1976Date of Patent: June 14, 1977Assignee: Lincoln Brass Works, Inc.Inventor: Everett W. Carlson
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Patent number: 3955793Abstract: A valve stem system is described for use in submerged oil and/or gas production systems designed to improve the reliability of subsea valves. A remotely rotatable pressure cap is threadedly engagable onto and removable from a valve bonnet which is mounted on a valve. The valve bonnet surrounds one section of the valve stem of the valve and forms a metal-to-metal seal with the cap when the cap is threadedly made up on the valve bonnet. Another section of the valve stem extends into the cap. A spline is arranged on that section of the valve stem. A spline clutch is arranged on the interior of the cap and is engagable with the spline of the valve stem to cause, when engaged, rotation of the valve stem upon rotation of the cap. A coil spring is arranged within the cap to push or urge the spline clutch into engagement with the valve stem spline when the cap is removed from the valve bonnet. Bearings arranged between the valve bonnet and the valve stem permit rotation of the valve stem relative to the valve bonnet.Type: GrantFiled: June 21, 1974Date of Patent: May 11, 1976Assignee: Exxon Production Research CompanyInventors: Joseph A. Burkhardt, Thomas W. Childers
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Patent number: 3930634Abstract: Safety device for controlling a valve. For application to a valve for controlling fluid flow, there is provided a normally inoperative device which the operator must consciously and deliberately render operative before the valve can be changed from one setting to another. In the illustrated embodiment, a valve activating device is held in inoperative position by suitable resilient means. To render same operative, the operator pushes the operating device against such resilient means into engagement with a desired portion of the valve for effecting the desired operation. As shown, such operating means automatically disengages only in one selected position of the valve, such as the "off" position, but remains engaged while the valve is in the other position, such as the "on" position. It is, however, possible by a simple modification to render same automatically disengageable as the valve attains either position.Type: GrantFiled: June 20, 1974Date of Patent: January 6, 1976Assignee: General Gas Light CompanyInventor: Stanley M. Loveless