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| Number | Title | Issue Date |
| 5137084 | Rotating head A rotating head having a bowl assembly and a rotating assembly disposed in a bowl opening formed in the bowl assembly. The rotating assembly comprises and elastomeric member and a rotating bushing. The rotating bushing is connected to an outer peripheral ... | 08/11/1992 |
| 5123451 | Pipeline repair sleeve assembly The assembly comprises a pair of semi-circular steel shells. The inner surface of one shell forms a circular recess. A flat cylindrical annular seal element is seated in and fills the recess. The element is resilient and deformable. It has concentric prot... | 06/23/1992 |
| 5104151 | Coupler apparatus for connecting a conduit to an equipment opening having damaged threads Apparatus for connecting a conduit to an equipment opening having damaged female threads includes a body, an annular packing ring and a packing follower. The packing ring is formed of an extrudable, non-resilient packing material. The body and the packing... | 04/14/1992 |
| 5044670 | Pipe for conveying solid matter A pipe for conveying solid matter, particularly for conveying concrete. The pipe has a cylindrical middle portion and a double-layer welding neck with annular coupling flange at each end of the middle portion. The inner layer is replaceably clamped in the... | 09/03/1991 |
| 5024466 | Wear-prevention structure for pneumatic conveying pipe elbow A structure to replace the outer wall of a pipe elbow to provide wear resistance in pneumatic conveying pipes carrying particulate material, said structure having a chamber with a source of vacuum suction therein disposed on the outer portion of the elbow... | 06/18/1991 |
| 5011196 | Union for fluid conduits, in particular for high purity gas Each end fitting of the union has an end for fixing the fluid line, and a coaxial metallic body terminating in an annular radial polished section where the internal bore of the union issues. A washer made of a deformable synthetic material is pressed on t... | 04/30/1991 |
| 4944535 | Rotary liquid connection mechanism A liquid flow tube extends through an anti-friction bearing so that the tube can rotate around its axis while liquid is flowing through the tube interior space. A dynamic seal is arranged between the outer cylindrical surface of the tube and a stationary ... | 07/31/1990 |
| 4865353 | Abrasion resistant ceramic elbow A pipe elbow for transmission of abrasive materials therethrough defining a square or rectangular cross-sectional shaped flow passageway in the area wherein the direction of flow of said abrasive material is changed, said pipe elbow including an outer cas... | 09/12/1989 |
| 4804207 | Connector pipe segment The connector pipe segment for conductor pipes or conduits for gaseous as well as fluid flow media comprises a pressure-tight outer shell, at least two connector pieces, a plurality of sealing surfaces and a wear-resistant sleeve, advantageously of a sint... | 02/14/1989 |
| 4790542 | Furnace front wall seals A gland seal for addition to a boiler and furnace structure which has pipes (20) passing through a waterwall (12) and seal box (30). The gland seal includes a packing (40) of ceramic rope of square cross-section wrapped on the pipes (20) adjacent the fron... | 12/13/1988 |
| 4733889 | Wear resistant pipe A wear resistant elbow or bend for use in the pneumatic transport of abrasive materials which comprises an elastomeric liner (14) and a rigid outer shell (30). The elastomeric inner liner (14) has inlet and exit portions that are circular in cross section... | 03/29/1988 |
| 4691748 | Improved filler tube tip and centering bell bushing Bottle filling machines are known in which a centering bell is attached to a bushing for vertical movement up and down on a filler tube. Downward movement of the bushing and bell is limited by a shoulder on an enlarged tip portion of the filler tube. The ... | 09/08/1987 |
| 4684155 | Pipe elbow with abrasion resistant composite inner liner and method for forming A pipe elbow having a composite ceramic wear liner which is particularly adapted to resist abrasive wear from particulate material conveyed through the pipe elbow. The composite ceramic wear liner is comprised of four series of polyhedron shaped ceramic w... | 08/04/1987 |
| 4653777 | Articulate bent pipe for transportation of powder and slurry in dry or wet state An articulate bent pipe for transport of powder and slurry is composed of a plurality of sector shaped nodular pipes having a wear resistant pipe lining applied on the interior thereof and packing means positioned between each nodular pipe. The nodular pi... | 03/31/1987 |
| 4606556 | Wear resistant elbow A wear resistant pipe elbow for use in transporting fluent materials such as in a pneumatic conveying system. The elbow includes a wear back or wear resistant surface on the inside of the outer wall of an arcuate channel connecting an inlet leg with an ex... | 08/19/1986 |
| 4487438 | Flexible flange joint coupler A flexible pipe joint coupling apparatus for attaching a pipe to a flange comprises a pipe portion which fits into an alignment ring which is attached in turn to the flange. The alignment ring provides centering and anchoring of the pipe portion. A yielda... | 12/11/1984 |
| 4479743 | Wear resistant insert for particulate material flow ducts A wear resistant body mountable at a directional change point within a particulate material duct. A plurality of successively spaced cavities are formed in the body to trap and collect particulates flowing across the body such that the collected particula... | 10/30/1984 |
| 4461498 | Coupling members for pipeline assemblies According to the present invention, a coupling member assembly is provided which is of multiple-part construction, and which includes an inexpensive and readily replaceable conduit member formed from an abrasion resistant material, the conduit member bein... | 07/24/1984 |
| 4448218 | Apparatus for sealing leaks An apparatus for patching leaks in pipes, hoses, containers and the like has a rectangularly shaped inflatable pad comprising top and bottom layers with the top layer constructed of inelastic material and the bottom layer of very elastic material connecte... | 05/15/1984 |
| 4413765 | Method and apparatus for in situ repair of a worn pipe section A method and apparatus for in-place repair of a section of pipe unduly worn along a portion of its circumference by friction of material fed therethrough. The method includes the steps of marking the ends of the worn pipe section by circumferential lines,... | 11/08/1983 |
| 4413844 | Swivel connector between a floating or semi-submerged structure and a riser or flow line A hydrocarbon loading buoy has a connection element rotatable in a bearing supported by the buoy. When a riser pipe or conduit is connected to the connection element the pipe and element can rotate or swivel relative to the buoy. A lock mechanism on the b... | 11/08/1983 |
| 4304310 | Drilling head A drilling head comprises a tubular body adapted for connection above a well head and having a removable side outlet with a replaceable wear bushing. An assembly removably secured in the head includes a stator and rotor with bearing means and rotating sea... | 12/08/1981 |
| 4299416 | Swivel with removable packing gland A swivel for a reverse rotary drilling machine is described which is adapted to be positioned between a rotatable Kelly bar and a circulating fluid hose which extends laterally from the upper end of the swivel. The swivel comprises a packing body which is... | 11/10/1981 |
| 4258944 | Split slip nut and seal assembly for plumbing trap For a plumbing trap, such as under a sink or other similar installations, a split slip nut and seal assembly for joining two tubular members such as pipes or tubes one within the other; wherein a split seal is inserted between the tubes laterally and then... | 03/31/1981 |
| 4251170 | Abrasion resistant bend and method for small pipelines An abrasion resistant bend or elbow like construction for small pipelines of relatively small, i.e., 2 to 8 inch, inside diameter is formed of soft, ductile metal, normally mild steel. The outside bend portion most subject to abrasive attack is prefitted ... | 02/17/1981 |
| 4218080 | Repairable composite seal ring A seal assembly for a conduit connection including a first and a second conduit part, each having an axially extending flow passage and an end surface radially intersecting the flow passage. Each of the conduit parts includes an internal sealing cavity ad... | 08/19/1980 |
| 4161331 | Spherical irrigation pipe coupling with replaceable seal In accordance with the present invention, irrigation pipe couplings for movable irrigation systems may include a spherical coupling structure that allows articulation of sections of the irrigation pipe during operation of the irrigation system. A sealing ... | 07/17/1979 |
| 4130300 | Composite abrasion resistant pipe elbow A composite pipe elbow adapted to resist abrasive wear wherein the outside bend portion most subject to abrasive attack is comprised of a plurality of ceramic wear blocks with the remaining portion of the elbow being composed of steel and preferably a hea... | 12/19/1978 |
| 4022498 | Fluid loading arm swivel joint A marine loading arm equipped with an improved pipe swivel joint at the outer end of the arm's triple-swivel coupling assembly that functions to connect the outer end of the arm to the manifold flange of a marine tanker. The weight and axial dimension of ... | 05/10/1977 |
| 3977730 | Junction elements for pneumatic conveyor pipes Junction elements for pneumatic conveyor systems for use in, for example, power stations include a pair of intersecting arms and an impact plate at the outside of the junction between the arms. The impact plate is reinforced by a reinforcing plate which i... | 08/31/1976 |
| 3958817 | Double tapered pipe coupling The specification discloses a sleeve type coupling for providing a limited flexible connection between two sections of pipe, particularly large diameter pipe such as shore dredge pipe. The coupling has an overall length in the range of 11/2 to 2 times the... | 05/25/1976 |
| 3945446 | Stabilizer for drill strings Stabilizer apparatus for a drill string or other running string, including a body structure forming part of a rotary drill string and a stabilizer positioned on an end portion of said body structure, the stabilizer comprising a stabilizer sleeve having a ... | 03/23/1976 |
| 3931933 | Method of and apparatus for the pouring of fast foaming reactants A method and apparatus for the pouring of fast foaming reactants which essentially comprises the use of a disposable nozzle liner and a nozzle assembly adapted for use with such a disposable liner. The invention encompasses air flushing the nozzle assembl... | 01/13/1976 |
