Bizarre Patents
A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5279365 | Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms An improved rotary blowout preventer having a rotary housing rotably mounted within an outer housing and carrying an annular packer assembly hydraulically actuated by fluid circulated through the outer housing by hydraulic pumps. An annular adapter is det... | 01/18/1994 |
| 5271630 | Conduit seal An improved conduit seal is provided for the upper connector assembly (10) of a TLP where the upper end of a tether (14) is pivotally secured within the tether conduit (38) of a floating platform (12). The conduit seal includes an annular elastomeric seal... | 12/21/1993 |
| 5184681 | Telescoping riser joint and improved packer therefor An improved riser telescoping joint including a riser mandrel, an annular resilient packer carried by the riser mandrel, a telescoping mandrel positioned within and movable with respect to said riser mandrel, a line connected to the riser mandrel for deli... | 02/09/1993 |
| 5058903 | Drill rod seal For use with a raise drill or other earth or rock drills. A seal assembly comprises a housing for the sealing engagement with the walls at the top of the shaft, a flexible, generally cylindrical seal for engagement with a drill rod and an inflatable bladd... | 10/22/1991 |
| 4971148 | Flow diverter There are disclosed several embodiments of a flow diverter each of which includes a housing installed beneath the floor of a drilling rig on the upper end of a conductor pipe through which a well is to be drilled, a thrust plate sealably supported within ... | 11/20/1990 |
| 4358085 | Keying means for segmented end ring blowout preventer An improvement in blowout preventer apparatus of the type having a radially compressible annular packing mounted within a housing chamber, the housing having axially aligned upper and lower conical bores communicating with an inner bore of the annular pac... | 11/09/1982 |
| 4276945 | Mud return line connector apparatus The preferred and illustrated embodiment is a connector adapted to be joined above a blowout preventer and below the rotary table of a drilling rig. It collects the annular flow of returned drilling mud and directs mud to an incorporated, radially directe... | 07/07/1981 |
| 4206929 | Blow out preventer In oil and gas well pumping apparatus, a polish rod reciprocates through a stuffing box and connects to a submersible pump through a tubing string or the like. When servicing, it is desirable to close off the gas or oil pressure from below and hydraulic f... | 06/10/1980 |
| 4178112 | Plat-gard leg closure A diaphragm for closing the bore of a tubular piling guide member and/or supporting leg member of a marine platform or similar structure, the diaphragm comprising reinforced elastic material bonded to a plurality of reinforcing members in the periphery of... | 12/11/1979 |
