Class 137/315.02 - Blow out preventer or choke valve device (e.g., oil well flow controlling device, etc.)

Subclass of Class 137 - Fluid handling
Definition: Subject matter comprising a plurality of relatively movable
No. of patents: 22
Last issue date: 05/15/2012

Number	Title	Issue Date
8176933	Annular BOP packing unit A packing unit for a blowout preventer includes an elastomeric, annular body configured to be disposed about a longitudinal axis of the blowout preventer and configured to be displaced radially inward towards the longitudinal axis upon actuation of the blowout preve...	05/15/2012
7331562	Blowout preventer with breech assembly A blowout preventer which, in certain aspects, has a main body with a main top, a main bottom, and a main bore therethrough from the main top to the main bottom, at least one breech assembly secured to the main body, ram apparatus movable within the breech assembly ...	02/19/2008
7025140	Large particulate removal system A choke for removing large diameter particulate matter from an oil or natural gas well includes a housing having a chamber with an integral solids receptacle. The chamber is in communication with a flow stream outlet and a flow stream inlet. The flow stream inlet is...	04/11/2006
6557577	Threaded union safety device and method A union assembly useful in a fluid flowstream includes a body portion, a pressure indicating device and a removable cover. The body portion includes a bore, an access opening and pressure indicating device cavity in fluid communication, and a first plural...	05/06/2003
6446664	Erosion resistant wear sleeve for high pressure valves A throttling choke valve having a wear sleeve lining the interior surface of the cylindrical passage downstream of the valve sealing mechanism. A preferred embodiment of the wear sleeve has a removable retainer ring that fits between the wear sleeve and t...	09/10/2002
6276386	Charging device for hydraulic systems There is described herein an apparatus for charging a fluid line through a coupler such as a penetrator. The apparatus comprises a body formed from a sidewall defining a bore positioned along the longitudinal axis and extending therethrough. The first end...	08/21/2001
5645098	Low profile and lightweight high pressure blowout preventer A lightweight blowout preventer having a low profile is disclosed. Each of the rams have a sealing ring to be positioned thereabout to seal leaks from occurring between its bonnet and the ram body, thereby permitting the use of only about four connecting ...	07/08/1997
5638855	Low profile and lightweight high pressure blowout preventer A lightweight blowout preventer having a low profile is disclosed. Each of the rams have a sealing ring to be positioned thereabout to seal leaks from occurring between its bonnet and the ram body, thereby permitting the use of only about four connecting ...	06/17/1997
5509435	Non-leaking valve Disclosed is a valve having (A) a valve body with an aperture therethrough, a threaded tap crossing the aperture and opening to only one side of the valve body, (B) a tap screw having a head of larger diameter adopted to screw into the threaded tap, where...	04/23/1996
5241980	Oil field choke apparatus An improved choke valve apparatus for use in controlling oil well flow for example includes an improved interlock system for warning of a pressurized condition within the valve prior to removal of the valve wing nut member. The safety bleeder plug assembl...	09/07/1993
5065787	Choke valve safety device A choke valve safety device to prevent unthreading of the choke bonnet nut until internal pressure has been vented, comprising a U-shaped bracket that fits over a tool-engaging portion of the nut, and a bracket support securable to the choke body only in ...	11/19/1991
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
4738275	Cartridge puller for hot and cold water mixing valve A quick, lightweight cartridge puller for hot and cold water mixing valves operates to provide an increased mechanical force advantage while applying opposed relative forces between a valve cartridge and its value housing to avoid stressing wall and decor...	04/19/1988
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
4699350	Valve and a process for removing a closure member of the valve A valve, for example for use as a pipeline stop valve or a blow-out preventer, comprises a body with a central passage and opposed aligned guideways extending outwards from the passage. A closure member is provided in each guideway, each of which guideway...	10/13/1987
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
4503879	Plug mechanism for wellhead tool An improved plug mechanism for use with a wellhead tool for removing and replacing valves on an operating wellhead under pressure including an elongated housing with a fluid coupling on one end for connecting to the outlet end of a wellhead valve and a pl...	03/12/1985
4504037	Ram blowout preventer securing and retracting apparatus Bonnet securing and retracting apparatus for a ram blowout preventer is disclosed. The ram blowout preventer bonnet is retained by two bonnet studs and nuts and by bonnet bolts. Bearings in the bonnet are provided to slide on bonnet studs. To retract the ...	03/12/1985
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
4442892	Apparatus for stabbing and threading a safety valve into a well pipe In accordance with an illustrative embodiment of the present invention, an apparatus for stabbing and threading a safety valve into a well pipe to prevent upward flow comprises a tubular canister rotably mounted on a carriage assembly that is slidably mou...	04/17/1984
4337788	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...	07/06/1982
4133342	Method of replacing seals in a well ram type blow out preventer This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill head, for example on the sea bed. The method comprises re...	01/09/1979

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Class 137/315.02 - Blow out preventer or choke valve device (e.g., oil well flow controlling device, etc.)