Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7219878 | Live loaded packing for valve In accordance with the present invention, there is provided a lie loaded packing assembly for a valve which comprises a valve body defining a passage having a valve stem moveably disposed therein and selectively moveable between open and closed positions. Extending ... | 05/22/2007 |
| 7163024 | Flow control valve and flow control device There are provided a flow control valve and a flow control device suitable for allowing flow control of a fluid with high accuracy. Diaphragms 8 and 9 are mounted to upper and lower openings, respectively, of an air chamber 6. The upper diaphrag... | 01/16/2007 |
| 7124774 | Control valve A control valve for regulating flow of fluids passing through the valve. The control valve includes a body with an inlet, an outlet and a passageway through which the fluid passes from the inlet to the outlet. The control valve also includes a displaceable column pr... | 10/24/2006 |
| 7104805 | Board to board current connection A connector for providing a high current connection between printed circuit boards. The connector comprises a fastener, an electrically conductive spacer, and a nut. The fastener extends through a through-hole in each of the printed circuit boards. The spacer is dis... | 09/12/2006 |
| 6488263 | Valve stem and method of manufacture; improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 12/03/2002 |
| 6250604 | Valve stem and method of manufacturing, improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 06/26/2001 |
| 6247679 | Valve stem and method of manufacture; improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 06/19/2001 |
| 6167902 | Bottom entry cryogenic valve An improved bottom entry cryogenic valve, with single piece cast body, that provides for easy and efficient removal of the valve stem and valve seat components without removing the valve body from the fluid circuit. The valve body forms the housing and ha... | 01/02/2001 |
| 6050541 | Pneumatic valve actuator assembly A pneumatic actuator and method for a gate valve are disclosed which provide for stepped guide connections between upper and lower cylinder plates for a pneumatic cylinder to thereby automatically centralize and locate the relatively heavy pneumatic cylin... | 04/18/2000 |
| 5829473 | Multi purpose valve A hydraulic control valve comprising a housing fitted with an inlet port and an outlet port, a sealing port intermediate the inlet port and the outlet port, dividing the housing into an inlet chamber and an outlet chamber with a diaphragm sealingly dividi... | 11/03/1998 |
| 5775370 | Fluid pressure control valve apparatus A fluid pressure control valve apparatus, including a main body in which an input opening is formed in communication with a master cylinder and an output opening is formed in communication with a wheel cylinder. A stepped bore in the main body communicate... | 07/07/1998 |
| 5743288 | Valve having provision for replacing stem packing while the valve is under pressure A valve, having provision for replacing stem packing while the valve is under pressure, has a valve body with a flow passageway through it, a gate that is vertically positioned to open and close the passageway, a stem extending upwardly from the valve bod... | 04/28/1998 |
| 5732731 | Secondary seal bypass valve for gate valves In combination with a gate valve comprising a valve body having an internal cavity extending between an inlet port and an outlet port, a bonnet mounted to the valve body and having an internal passageway in communication with the cavity, a valve stem rota... | 03/31/1998 |
| 5503180 | Valve having easily replaceable seat A valve has a seat that is replaceable without disassembly of the bonnet from the body or removal of the stem and closure member. The seat is maintained in a fixed position within the body of the valve by a single retainer member that is readily separable... | 04/02/1996 |
| 5456447 | Valve assembly A valve comprises a valve stem 2 surrounded in part by a packing material 3, and compression means arranged to bring the packing material into sealing engagement with the valve stem. The compression means includes a spring assembly comprising resilient sp... | 10/10/1995 |
| 5312087 | Low torque back seating stem for gate valve A gate valve adapted for stem back seating has a stem and bonnet assembly with a rotatable bearing ring to which the stem is releasably fixed during normal gate opening and closing operations. During back seating, the stem is released from the bearing rin... | 05/17/1994 |
| 5146945 | Seal ring retainer and guide ring for valve plug A removably securable guide ring (33) for a valve plug (30) in a control valve. The removably securable guide ring (33) also serves as a retainer for a pressure seal ring. The guide ring (33) includes the surface (40) which, upon the guide ring (33) being... | 09/15/1992 |
| 5107882 | Valve assembly with removable packing A valve assembly includes a self-contained, packing removal means for removing the valve packing. The valve assembly includes a valve stem connected at one end to a valve, a bonnet for mounting the valve stem on a valve body having a valve seat engageable... | 04/28/1992 |
| 4934403 | Readily inspectable and cleanable emergency valve for storage tank An emergency valve assembly for a tank adapted to contain liquid such as for instance hazardous material, with the valve assembly including a valve head for closing the discharge port from the tank in an operative closed position of the valve head, and wi... | 06/19/1990 |
| 4926898 | Safety choke valve The invention relates to a safety chock valve having improved body top. An upper part of the valve body has a tapered wall cavity which receives in a sealed engagement a tapered lower part of the valve bonnet. An internally threaded cap member secures sea... | 05/22/1990 |
| 4867197 | High pressure valve An arrangement for providing access to the seal rings of a seatless high pressure valve includes an aperture in the valve body and a demountable sealed closure for the aperture. The sleeve within the valve body for transmitting the gland force to the seal... | 09/19/1989 |
| 4860784 | Non-rising stem valve assembly and method of replacing a permanent seal The non-rising stem valve assembly includes a valve body having an inlet and an outlet and a bonnet member securely attached to the valve body which defines a tubular passageway. A valve stem extends through this tubular passageway and has a lower valve p... | 08/29/1989 |
| 4773442 | Globe valve having a dismountable seat for rapid maintenance A globe valve comprising: a control rod (70) which is movable in translation along a valve axis (XX'), handle means (90) for controlling movements of said rod in translation, a disk (74) fixed to one end of said rod; a body (12) having an inlet passage (1... | 09/27/1988 |
| 4705062 | Choke and improved needle tip therefor The improved choke includes a body with an internal valve chamber, an inlet and an outlet communicating through the body into the valve chamber, a valve seat surrounding the opening of the outlet into the valve chamber, and a valve member mounted within s... | 11/10/1987 |
| 4640305 | High temperature, zero leakage packing assembly The disclosure is related to a high temperature, zero leakage packing assembly for use in connection with the valve stem of a high pressure control valve. The packing assembly is particularly suitable for use in the control of high temperature, high press... | 02/03/1987 |
| 4633898 | Slide valve with partial-vacuum actuator A slide valve with a partial-vacuum actuator, especially for motor vehicle heating and air conditioning units, comprising a valve housing having a bottom; a slide for opening and closing the valve; a slide chamber for slidably containing the slide; an act... | 01/06/1987 |
| 4630636 | Actuator with nonelastomeric seal A seal assembly containing a plurality of nonelastomeric sealing elements for use in a valve actuator is disclosed. The valve actuator can be incorporated into a fluid transmission conduit at the surface of a producing oil or gas well. A spring member rad... | 12/23/1986 |
| 4513770 | Flow control valve Shaft seals of the lip type with a sealing member bonded to an apertured insert have a tendency to form blisters in the sealing member near the bond. In order to avoid this, and provide a seal suitable for use in hygienic environments, the sealing member ... | 04/30/1985 |
| 4509719 | Valve cover sealing A valve comprises a valve housing with a detachable lid, a spindle passing through the lid and clamping means for clamping the lid to the housing. The clamping force of the clamping means acts mainly in the axial direction of the valve spindle. The lid is... | 04/09/1985 |
| 4503878 | Choke valve A valve having a body with a valve chamber therein, an inlet into the valve chamber, an outlet from the valve chamber and an opening to the valve chamber aligned with the outlet, a bonnet secured to the body covering the opening, and having a tubular proj... | 03/12/1985 |
| 4474203 | Valve with pressure energized back seat sealing means A valve having a back-sealing capability provided by a pressure energizable sealing assembly which becomes operative independently of valve stem movement and valve element position for sealing between the valve casing (10, 22) and the valve stem (21) in t... | 10/02/1984 |
| 4470430 | Drilling choke A drilling choke for controlling flow of drilling fluids from a well comprising: a body having an inlet and outlet and an intermediate cavity therebetween; a seat member coaxially disposed in the body outlet; an operator assembly removably attached to the... | 09/11/1984 |
| 4450856 | Means for releasably securing hand-wheel to valve spindle A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve... | 05/29/1984 |
| 4444220 | High pressure valve An erosion resistant control valve or adjustable choke has a body with a side inlet, an end outlet and a conical valve seat in alignment with the outlet. Downstream from the valve seat are a converging passage having a smaller taper than the valve seat, a... | 04/24/1984 |
| 4408627 | Exhaust brake valve unit The invention provides an automatic exhaust brake valve unit having a hollow body with an exhaust gas passage extending therethrough and a valve closure member movable in the hollow body between a closed position in which it closes the passage, and an ope... | 10/11/1983 |
| 4394872 | Valve assembly for packing removal A valve assembly for packing removal includes a valve body having a bonnet and yoke attached to the body and a chamber extending longitudinally through the bonnet. A stem secured in the yoke extends through the bonnet chamber. Valve packing means are encl... | 07/26/1983 |
| 4363466 | Replacement valve assembly A replacement valve assembly with an adjustable sleeve fitting received in the valve port of a conventional faucet body and sealed by a locking nut and gasket. A valve stem is disposed centrally through the fitting and carries a frictionless washer retain... | 12/14/1982 |
| 4351512 | Valve with yoke and captive gland wrench A clamp yoke valve has a yoke member engaged with the valve body about its bonnet opening, a bonnet sealing the bonnet opening and including a packing cartridge chamber opening outwardly of the valve body and disposed about the valve stem and a packing gl... | 09/28/1982 |
| 4274432 | Valve A valve having a valve stem extending through a bonnet with packing therebetween and a back seat and back seat valve member cooperable to isolate the packing from pressure within the valve body wherein an auxiliary piston is provided to positively hold th... | 06/23/1981 |
| 4230299 | Pressure balanced gate valve having selective actuator systems A pressure balanced gate valve mechanism wherein a closed loop fluid interchange system interconnects the valve actuator stem area of the valve mechanism with the pressure balancing stem area and functions to accomodate volumetric changes to prevent the d... | 10/28/1980 |
