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| Number | Title | Issue Date |
| 7458558 | Controlled method and apparatus for releasing pressure Method and apparatus 10 for releasing pressure that may have built up behind a plug 18 in a controlled manner. Environmental and safety regulations mandate that all bleeder valves in a gas and liquid hydrocarbon and chemical service require metal plugs... | 12/02/2008 |
| 7201232 | Washpipeless isolation strings and methods for isolation with object holding service tool An isolation string having an upper packer and an isolation pipe in mechanical communication with the upper packer, the isolation pipe comprises an operable valve and an object activated valve. An object holding service tool is adapted to release an object to activa... | 04/10/2007 |
| 7195033 | Method and system for determining and controlling position of valve Apparatuses and methods for accurately determining the position of a sliding or rotational sleeve valve in real time are disclosed. The apparatus comprises fiber optic cable based sensors which are either linearly or circumferentially arrayed in the housing that sur... | 03/27/2007 |
| 7191843 | Valve apparatus with seal assembly A valve apparatus. The valve apparatus is disposed within a well so that an annulus is formed between an outer portion of the valve and an inner portion of the well. In one preferred embodiment, the valve apparatus comprises an outer mandrel containing an annulus po... | 03/20/2007 |
| 7124824 | Washpipeless isolation strings and methods for isolation An isolation string having: an upper packer; and an isolation pipe in mechanical communication with the upper packer, wherein the isolation pipe comprises a pressure activated valve and an object activated valve. A method having: running-in an isolation string on a ... | 10/24/2006 |
| 7052048 | Through flange A through-flange for attaching a pipe to the curved sidewall of a vessel. A flange portion of the through-flange is contoured to match the curvature of the sidewall and thus can be glued directly to the sidewall. A retaining ring also being contoured to match the si... | 05/30/2006 |
| 7044440 | Outfall valve structure conforming to ergonomics An outfall valve structure conforming to ergonomics is primarily composed of a casing, which is moveably connected with a hollow pipe. The casing is in the form of a short pipe, the exterior wall thereof is provided with a coupler with an opening provided on the bot... | 05/16/2006 |
| 6995352 | Fiber optic based method and system for determining and controlling position of a sliding sleeve valve An apparatus and method for determining the position of a hydraulically actuated sliding sleeve valve in real time is disclosed. The apparatus comprises, in a preferred embodiment, a reference sensor and a position sensor, both of which constitute fiber optic windin... | 02/07/2006 |
| 6979152 | Intake nozzle for vacuum conveyor An intake conduit apparatus comprises an intake conduit adapted at a downstream output end thereof for connection to an intake of a vacuum conveyor, and adapted at an upstream input end thereof to facilitate entry of granular material. Ramps slope inward and downstr... | 12/27/2005 |
| 6973974 | Valves for use in wells A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at... | 12/13/2005 |
| 6951331 | Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve A sleeve valve for fluid flow between a hydrocarbon reservoir and a well includes a first sleeve and a second sleeve which are relatively movable between a first position in which at least one opening in the first sleeve is aligned or misaligned with at least one op... | 10/04/2005 |
| 6941602 | Self adjusting, contouring cushioning system A cushion for seats, wheelchairs, mattresses, etc. is disclosed. The cushion includes fluid-filled cells. Each cell is in fluid communication with adjacent cells via conduits. Constrictures such as check-valves and duckbill valves may be located inside the conduits ... | 09/13/2005 |
| 6854771 | Low pressure fitting Fittings configured as quick-connect couplings or valve assemblies utilize an O-ring to lock a male member within a female member. The O-ring engages a shoulder to both effect a seal and to prevent axial motion of the male member with respect to the female member. I... | 02/15/2005 |
| 6722356 | Gas burner valve assembly The invention relates to a gas valve of the type commonly used to connect a circular or non-planar gas manifold to the burner of a household cooktop. An adapter is provided for converting the gas valve for use with a non-planar profile gas manifold to a planar profi... | 04/20/2004 |
| 6719002 | Pressure testing apparatus for gas service delivery systems A gas delivery system for propane or natural gas includes a gas service line, a pressure regulator connected in the gas service line, and a flow control valve device permanently installed at a predetermined location in the gas service line, e.g., upstream of the reg... | 04/13/2004 |
| 6499717 | System and method of use for a refrigerant quick-connect coupling A method of use and apparatus for a quick connect coupling in a fluid system as disclosed herein. The quick connect coupling includes a female coupling assembly and a male coupling assembly. The female coupling assembly includes a female cone housing nest... | 12/31/2002 |
| 6449981 | Air passage controlling system for air conditioning apparatus An air passage controlling system for selecting an air outlet mode of an air conditioning apparatus includes a driving shaft, an intermediate shaft, a driven shaft and a film door disposed between the shafts. The film door has a door opening through which... | 09/17/2002 |
| 6223766 | Pressure testing apparatus and testing method for propane tank systems A method and assembly (kit) are provided for use by propane tank service personnel to detect escaping gas in propane tank systems. The standard connection between the regulator and tank service valve is replaced with a permanent valve assembly including a... | 05/01/2001 |
| 6089530 | Gate valve A swing gate valve for closing a lateral discharge opening in an elongated conduit includes a swing gate shaped to fit around the exterior of the conduit in an open position adjacent the lateral opening. A pair of pivotable swing arms are connected to the... | 07/18/2000 |
| 6082395 | Fluid flow regulator A fluid flow regulator for regulating flow in tubes of vacuum or blower systems is disclosed. The regulator has a body formed by shaping interconnecting first and second body parts that are movable relative to one another wherein in one position flow is a... | 07/04/2000 |
| 5885152 | Automotive ventilation housing with self supporting film valve having a convex semi-cylindrical shape A film valve designed to replace a semi cylindrical, solid rotary valve, which rolls the film against or away from the perimeter seal of an HVAC outlet opening without relative rubbing. Spring biased take up rollers journaled on V shaped, resilient wire s... | 03/23/1999 |
| 5826658 | Riser fill-up valve A fill-up valve is provided for a riser having a longitudinal axis that is connected at one end to a subsea wellhead and at the other end to a platform of an offshore oil or gas well. The fill-up valve is formed from a gate valve that mounts to an exterio... | 10/27/1998 |
| 5806830 | Plastic take-off collar for supply duct A molded plastic take-off collar for joining main and branch ducts in forced air heating, cooling, exhaust and ventilation systems having a tubular member with a first end perpendicular flange, and a second end having gripping beads and a stopping edge fo... | 09/15/1998 |
| 5687951 | Drain valve A new and improved drain valve for use with plastic fluid flow components, such as pipes, conduits, fittings, joints and the like is provided. The drain valves include a thermoplastic housing which is directly attached by welding or heat-fusion bonding to... | 11/18/1997 |
| 5531243 | Irrigation standpipe flow diverter and method for making same A flow diverter 10 for mounting on the flange 53 of an irrigation standpipe valve 52 comprising a hollow cylindrical body 12, having a side opening 14, an anchor strap 16 formed integrally with the body 12 below the side opening 14, and a cap 18 mounted t... | 07/02/1996 |
| 5370360 | Bellmouth duct fitting This is a unitary bellmouth duct fitting having a tubular body portion and a bellmouth portion; the tubular body portion has a circumferential terminal edge from which the bellmouth portion or flange radially and integrally extends and the bellmouth porti... | 12/06/1994 |
| 5326071 | Drain plug and method for removing fluid from a tank using a drain plug A drain plug comprising a housing including a body portion, a head portion and a first passage extending through the head portion and into the body portion; a valve seat disposed in the first passage; a movable valve closure member disposed in the first p... | 07/05/1994 |
| 5318273 | Gate assembly for irrigation pipes A gate for irrigation pipes adapted to be moved between open and closed positions over an opening in the pipe. The gate includes a carrier plate having a sealing boot around its periphery which will engage with the interior of the pipe. A slide member eng... | 06/07/1994 |
| 5291920 | Apparatus for measurement and control, respectively, of temperature and/or pressure A combined control and regulating valve (1) having a housing (2) with an inlet (3) and an outlet (4) as well as a partition (5) between said inlet and outlet and having a seat (6) designed for an interaction with a main valve body (7), which is adjustable... | 03/08/1994 |
| 5277221 | Gas feed valve for domestic applications and the like The space necessary for the installation of gas feed valves for domestic applications and the like of the type wherein gas feed valves take gas from a main gas feed duct and deliver it to gas using units is minimized by arranging the valves within the mai... | 01/11/1994 |
| 5263683 | Sliding sleeve valve A sliding sleeve valve for downhole use. A tubular main body has a radial flow port there-through and a primary annular seal carried adjacent its inner diameter and spaced longitudinally from the flow port in a first direction. A sleeve is carried co-axia... | 11/23/1993 |
| 5242827 | Apparatus for the automatic, continuous cleaning of the pipe of the solar receptor of a photobioreactor An apparatus for the automatic, continuous cleaning of the pipe of a solar receptor of a photobioreactor also having a carbonator associated with the solar receptor. The solar receptor and the carbonator both being traversed in series in a closed loop by ... | 09/07/1993 |
| 5144699 | Plumbing drainage system A plumbing drainage system has a plumbing stack with a clean-out hole formed therein. A drainage device for controlled drainage of the plumbing stack includes a device for connecting the drainage device to a plumbing stack at the clean-out hole formed in ... | 09/08/1992 |
| 5084189 | Method and apparatus for separating fluids having different specific gravities An axial flow-type pump for separating immiscible fluids having different specific gravities and a discharge manifold fluid connected to the fluid pump for drawing of the fluid having the heavier specific gravity. The fluid pump employs a rotatable impell... | 01/28/1992 |
| 4946077 | In-line air-bleed valve for hand-operated grease guns An attachment for bleeding trapped air from hand-operated grease guns consists of an in-line valve for disposition between the gun and its output tube. The valve features an in-line fitting on which is threaded a hand-operated nut. When the nut is backed-... | 08/07/1990 |
| 4921677 | Sliding valve for vent of liquid collecting compartment There is disclosed a liquid-collecting compartment that is vented to allow air to escape. The compartment is improved in that a closure member is provided constructed so as to be slidable onto and off of the vent aperture with a force that is between abou... | 05/01/1990 |
| 4890640 | Drainage valve A drainage valve for use in pressure systems where pressure surges occur for draining an underground water system when the water pressure in the underground water system is off and for sealing the drainage valve against drainage when the water pressure is... | 01/02/1990 |
| 4718636 | Branch coupling on flexible hose Purge branch coupling for a main flexible hose, reinforced or not, sheathed or unsheathed, of the type having the shape of a tubular insert which is intended to co-operate with a closure piece of its proximal extremity and which is integral with the main ... | 01/12/1988 |
| 4678367 | Riser assembly for a sub-surface irrigation and drainage system A riser assembly for a sub-surface irrigation and drainage system is disclosed having a molded, housing defining a generally rectangular, elongated cavity. A divider within the housing divides the cavity into an upstream chamber and a downstream chamber. ... | 07/07/1987 |
| 4671314 | Flow line sampler valve apparatus A homogeneous fluid sampling valve mounted into a high pressure or low pressure flow line or the like wherein homogeneous fluid is flowing therein, preferably the body of the valve mounted perpendicular to the flow with a small portion of the valve body e... | 06/09/1987 |
