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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7971909 | Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the field piping method A pipe joint and a method of joining pipes using the pipe joint prevent loss of a sleeve, enhance workability in the pipe joining operation, and ensure sealing performance. The pipe joint may be utilized in a refrigerant device, a heat pump hot water supply device, ... | 07/05/2011 |
| 7954856 | Flareless pipe coupling structure, flareless pipe coupling method, and on-site pipe coupling method A guide tapered surface 17 of a pipe coupling port 16 has a small diameter portion 17a guiding to a distal end portion 3a of a bite type sleeve 3 to bite into a coupling pipe 5 and a large diameter portion 1... | 06/07/2011 |
| 7740283 | Tube fitting with separable tube gripping device A tube fitting for a tube end has a female member that cooperates with a male member. A tube gripping device in the form of a gripping ring or ferrule is retained with the female member. Upon a partial pull-up, the tube gripping device separates from the female memb... | 06/22/2010 |
| 7677602 | Tube fitting A tube fitting for a tube end has a first coupling member and a second coupling member joined with the first coupling member. A tube gripping device is disposed between the first coupling member and the second coupling member such that assembly of the first coupling... | 03/16/2010 |
| 7455324 | Pipe joint A pipe joint provided with a joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a clamp ring having a slit to fasten the end portion of the pipe inserted to the insertion cylinder portion by elastic fastening f... | 11/25/2008 |
| 7407196 | Tube fitting with separable tube gripping device A tube fitting for a tube end has a female threaded member that cooperates with a male threaded member. The female member includes a tube gripping device in the form of a gripping ring or ferrule that is attached to the female member by a frangible web. Upon a parti... | 08/05/2008 |
| 7390029 | Quick connector A quick connector has a housing, a retainer for locking a tube at a correct position for complete connection in the housing and a restraining ring for restraining the retainer from being pressed into the housing to its locking position unless the tube is inserted in... | 06/24/2008 |
| 7363974 | Gravel packing a well A technique that is usable with a subterranean well includes communicating a slurry through a shunt flow path and operating a control device to isolate slurry from being communicated to an ancillary flow path. The system may include a shunt tube and a diverter. The ... | 04/29/2008 |
| 7350828 | Tube fitting with sealant A tube fitting (50) that uses two basic components, namely a fitting body (54) and a fitting nut (52). The nut (52) and body (54) are adapted to be threadably coupled together by relative rotation therebetween. The nut (52) ... | 04/01/2008 |
| 7350825 | Wall-mounted elbow duct A wall-mounted elbow duct and particularly to a wall-mounted elbow duct to connect a wall-mounted water discharge pipe to a hand-held shower head mainly includes an elbow duct which houses a reverse checking mechanism and a coupler and a coupling cap. By means of th... | 04/01/2008 |
| 7350580 | Subsea pass thru switching system A coupling switches control fluid from a tubing hanger to a downhole completion of a subsea well. The coupling, located between a tubing hanging running tool and a downhole completion, includes a coupling body and a tubing hanger. A hydraulic poppet switches control... | 04/01/2008 |
| 7350243 | Closet flange with knockout A closet flange includes a body having a lower body portion containing a bore and an upper body portion containing an inlet opening in fluid communication with the bore. Within the body is a knockout for closing off the bore. The knockout has a frangible connection ... | 04/01/2008 |
| 7347455 | Riser protector A piping riser protector for protectively covering the end portion of a riser assembly that includes a larger diameter central pipe and a plurality of smaller diameter peripheral pipes connected by a flange includes a polymeric body that protectively covers inner an... | 03/25/2008 |
| 7322378 | Semiconductor apparatuses and pipe supports thereof A semiconductor apparatus with a modified pipe support. The apparatus comprises an outer pipe, an inner pipe, and a pipe support. The support comprises a seat and a support ring. The seat comprises a tubular portion for supporting an outer pipe at a top end. The sup... | 01/29/2008 |
| 7316425 | Quick connector A quick connector includes a female portion with a staggered bore whereof one cross-section with large diameter can receive an outer flange of a male portion of the connector beyond a lock, the lock including a ring having an orifice for allowing through the flange ... | 01/08/2008 |
| 7308943 | Well operations system A wellhead has, instead of a conventional Christmas tree, a spool tree in which a tubing hanger is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the producti... | 12/18/2007 |
| 7302972 | Thermo-insulated flexible tubing A water supply line includes a cylindrical and ductile outer tube that has a centrally aligned axis. An inner tube is concentrically spaced about the axis of the outer tube and has a length coextensively sized therewith. The inner tube is equidistantly spaced inward... | 12/04/2007 |
| 7303553 | Device for connecting a cannula made of a flexible material with a tube A device for connecting or disconnecting cannula to or from a tube. The connection is uncomplicted, quick, safe and provides reproducible conditions in a surgical procedure for connecting to a blood pump that assists the heart or replaces the heart. A nipple (4 | 12/04/2007 |
| 7293299 | Tank flush system A Recreational Vehicle tank flush system is provided in which the existing vent pipe to the blackwater tank is modified by attaching an introduction tee which provides a hookup to a source of flushing water and to a hose and sprayer which may be hung just inside the... | 11/13/2007 |
| 7290805 | Pipe clip A pipe clip includes upper and lower clip members that are pivoted at one end and form upper and lower slots with a locking bar fixed in the lower slot. The upper and lower clip members form upper and lower grooves for receiving and thus engaging flanges of pipe sec... | 11/06/2007 |
| 7275594 | Stab guide A tool string stab guide for axially aligning first tool string components with second tool string components is disclosed. The stab guide has a body with an axial length along a longitudinal axis with a first and a second section. The first section of the body adap... | 10/02/2007 |
| 7252308 | Connector device for the sterile connection of tubes A connector for forming a sterile connection between two tubes, comprising first and second parts which comprise connectable conduits and which can mate, first and second covers which can be removed from the so-mated parts to expose connectable ends of the first and... | 08/07/2007 |
| 7252150 | Downhole tool A downhole tool including a selectively releasable joint, a downhole drilling assembly including the downhole tool, and a corresponding method. In one embodiment of the invention, a downhole drilling assembly includes a downhole tool having a first body and a second... | 08/07/2007 |
| 7252310 | Pipe coupling with tongue and groove sealing sleeve A coupler for use in joining two pipes in a butt joint. The coupler includes a band clamp and a split sealing sleeve disposed inside the band clamp for encircling the abutted ends of the pipes. The split sealing sleeve has a tongue-and-groove sealing joint at the co... | 08/07/2007 |
| 7247006 | Method and apparatus for sealing an ultrahigh-pressure fluid system An ultrahigh-pressure fluid system, such as an ultrahigh-pressure fluid pump, includes an improved dynamic seal assembly that can withstand pressures above 40,000 psi, and more preferably, pressures up to and beyond 87,000 psi. The dynamic sealing assembly includes ... | 07/24/2007 |
| 7246826 | Pipe lap joint with improved sealing slot for increased circumferential closure A pipe lap joint for use with vehicle exhaust systems which includes an inside pipe end telescopically inserted into an outside pipe end with the pipe ends secured together by a band clamp. The outside pipe end includes a sealing zone having a collapsible sealing sl... | 07/24/2007 |
| 7243962 | One piece locking belt A locking belt is used with a container having an annular end portion defining a top opening and a removable cover overlying the opening. The locking belt comprises a split circular ring, generally U-shaped in cross section, having first and second ends and includin... | 07/17/2007 |
| 7243728 | Sliding sleeve devices and methods using O-ring seals as shear members Devices and methods for releasably securing components of a device having a sliding sleeve arrangement to prevent premature actuation due to vibration. In a currently preferred embodiment, standard elastomeric O-rings are used as shear members. The O-ring shear memb... | 07/17/2007 |
| 7234732 | Pipe coupling for joining pipes of varying diameters A pipe coupling for joining a first pipe to pipes of varying diameters includes first and second hollow fittings which are secured together in end-to-end relationship by a crimping process to rigidly hold the fitting members together to form a continuous fluid passa... | 06/26/2007 |
| 7231983 | Split locking ring for wellhead components The present invention is directed to a split locking ring for wellhead components. In one illustrative embodiment, the device comprises a first internally threaded wellhead component, a second wellhead component, at least a portion of which is positioned within an o... | 06/19/2007 |
| 7207606 | Mechanical pipe joint, gasket, and method for restraining pipe spigots in mechanical pipe joint bell sockets A mechanical pipe joint, restraining gasket, and method for restraining pipe spigots within adjacent bell sockets. The restraining gasket is composed of two axially-separate components: a sealing portion and a restraining portion made of a plurality of arcuate locki... | 04/24/2007 |
| 7207383 | Multiple entrance shunt The present invention provides for multiple pathways by which fluid can enter one or more alternate pathway conduits. Entrance tubes can be arranged such that their spacing prevents all of them from being simultaneously obstructed, covered, or otherwise blocked.... | 04/24/2007 |
| 7205037 | Tubulation tubing of display panel Tubulation tubing of a display panel includes a flange at one end and a ring-shape adhesive member placed on a display panel to align a vent hole of the display with an opening of the tubulation tubing and the flange of the tubulation tubing is bonded to the display... | 04/17/2007 |
| 7198101 | Downhole release joint A downhole apparatus permitting separation of one part of downhole equipment from another part thereof includes a first part connected to a second part by a connecting member which limits axial and rotational movement of the first and second parts and has first and ... | 04/03/2007 |
| 7185922 | Anti-rotation device and anti-rotation structure for a pipe and a connector Anti-rotation device for a pipe and a connector has a pipe connecting portion and a connector connecting portion constructed integrally on the pipe connecting portion. The anti-rotation device is mounted on the pipe and the connector while the pipe connecting portio... | 03/06/2007 |
| 7186099 | Inclined scroll machine having a special oil sump A scroll-type compressor is provided in an inclined or inverted position with an oil sump disposed adjacent to a gas inlet of the scroll wraps to allow droplets of oil to be entrained in the gas being compressed so that the oil droplets in the gas can cool the scrol... | 03/06/2007 |
| 7185921 | Hose fitment for disposable food container A hose fitment for the connection of disposable food containers to dispensing lines of food dispenser. This hose fitment is adapted to securely establish fluid connection between a hose and a food or beverage dispensing line. This fitment includes a body member havi... | 03/06/2007 |
| 7174964 | Wellhead with radially expanded tubulars A wellhead is formed by extruding a plurality of tubular liners off of a mandrel into contact with an outer casing. The first tubular liner and mandrel are positioned within the wellbore with the tubular liner in an overlapping relationship with the outer casing. At... | 02/13/2007 |
| 7156126 | Pipe insert and pipe assembly formed therewith A synthetic resin pipe insert for insertion in an existing pipe or for use in the manufacture of new pipe to form a multi-channel pipe. The insert has a curved cross sectional configuration which defines a segment of a circle with a convexly curved radially outer wa... | 01/02/2007 |
| 7152674 | Disconnect devices A disconnect device for use as part of a tubing string downhole in an oil or gas well and which comprises a tubular body, at least one slip held within the tubular body, and a sleeve housed within the tubular body to hold the at least one slip in coupling engagement... | 12/26/2006 |
