Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7341258 | Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element A seal assembly seals first and second operational surfaces spaced apart by a gap. The first surface includes a seal groove having a base surface and first and second side surfaces. A sealing element in the seal groove has a foot portion extending parallel to the ba... | 03/11/2008 |
| 7121554 | High-pressure sealing In a high-pressure cylinder with an axial plunger, a seal assembly for scaling the gap between the cylinder wall and the plunger. The assembly is disposed in an annual recess in the wall having an open end and a bottom opposite thereto, and comprises a plunger-seali... | 10/17/2006 |
| 7108058 | Packing assembly for rotary drilling swivels and pumps having rotating shafts A packing assembly for use with a rotary drilling swivel having a cylindrical wash pipe comprising a housing assembly including a packing gland forming a sealing assembly chamber around the wash pipe, the packing gland including an injection port in open communicati... | 09/19/2006 |
| 6921081 | Annular seal According to the invention a seal—arranged between a radially inwardly facing outer boundary surface of an annular sealing gap and a radially outwardly facing inner boundary surface of the sealing gap—is characterized by a sealing ring having a sealing surface w... | 07/26/2005 |
| 6640823 | Fitting A fitting including a housing (2), a rotatable body (4) which is situated in the housing and which may advantageously be constructed in the form of a conical plug, a bushing (18) provided in the housing to floatingly mount and seal the rotatable body (4),... | 11/04/2003 |
| 6485809 | Low stress to seal gasket A multilayer, unitary gasket including at least one inner layer of expanded PTFE disposed between a first substantially air impermeable outer layer and a second substantially air impermeable outer layer, and a substantially air impermeable region bridging... | 11/26/2002 |
| 6267383 | V-shaped seal with anti-extrusion section A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti... | 07/31/2001 |
| 6076831 | Switch fitting A switch fitting, in particular a cock, ball cock, flap or likewise, with a switch rod for a switch member, which is rotatably and slightly tiltably guided in a switch shaft bore of a fitting housing and which has a sealing surface which is formed on a co... | 06/20/2000 |
| 6062570 | Stem sealing system for broad temperature ranges A stem seal having first and second wiping members circumjacent a stem is disposed within a bore. A lubricant-bearing ring is disposed about the stem within the bore between the wiping members, under compression therefrom. Projections from the wiping memb... | 05/16/2000 |
| 6007070 | Pressure actuated packing assembly A pressure actuated packing assembly for use in sealing the annular area of fluid flow devices to provide and maintain an effective, long-term seal therein. The pressure actuated packing assembly is designed for use in chemically hostile environments, and... | 12/28/1999 |
| 5845909 | Stuffing box with improved packing rings and method A stuffing box 10, 60 designed for sealing engagement with a rod member R includes a plurality of stacked packing rings 32, 110, 150, 210, and a gland member 42, 64 axially moveable relative to the stuffing box body 12, 62 for varying the compressive forc... | 12/08/1998 |
| 5788216 | Valve with perfluoroelastomer packing Valves having a stem packing of alternating layers of perfluoroelastomer and high temperature polymer provide outstanding sealing performance against corrosive fluids and high temperatures.... | 08/04/1998 |
| 5538256 | Method for producing a packing arrangement for a hydraulically operated apparatus and a packing arrangement The invention relates to a new method for producing a packing arrangement for a hydraulically operated apparatus. The method comprises the following steps: (a) producing a preshaped plastic piece of seal material; (b) compressing said preshaped piece at r... | 07/23/1996 |
| 5507502 | Packing life extender ring A packing life extender ring assembly which includes a first annular ring and a second annular ring concentrically encircling the first ring, both rings having tapered surfaces matingly engaging one another. The first and second rings are both made of a c... | 04/16/1996 |
| 5364111 | Sealing arrangement Proposed is a sealing arrangement for shafts with very small diameters, with an essentially U-shaped lip seal (6) subjected to the force of an axially acting helical compression spring (9). The two sealing lips (6.1 and 6.2) of the lip seal (6) are by thr... | 11/15/1994 |
| 5292137 | Rotary shaft sealing method and device A dry-face sealing method for preventing leakage around a rotary shaft uses an annular rigid seal having a smooth sealing surface and an annular resilient seal having a projecting sealing edge aligned coaxially therewith. The annular resilient seal has a ... | 03/08/1994 |
| 5062648 | Seal for rotating torque tube with seal valve A device for establishing a fluid-tight seal around a rotatable drive shaft has a housing which is formed with a straight bore through which the drive shaft is positioned. The bore has a narrow portion, a wide portion and a tapered portion between the nar... | 11/05/1991 |
| 4893781 | Stem packing assembly for frequent cycling valve A new packing arrangement is provided for improved sealing and limiting potential for extrusion of one packing member relative to another. The stem packing arrangement is disclosed with particular reference to a ball valve assembly having a body housing a... | 01/16/1990 |
| 4811958 | Sealed shafts moveable in vacuum chambers by exercising control from outside A sealed shaft for use in an evacuated chamber in which the shaft can be moved by control from outside the chamber while maintaining the seal around the shaft.... | 03/14/1989 |
| 4657264 | Fluid seal assembly with segmented sub-assembly A pair of beveled-face load rings between which is confined a seal ring sub assembly formed of segmented, polytetrafluoroethylene seals. The seals too have beveled faces which slidably engage the beveled faces of the load rings and, thereby, are prevented... | 04/14/1987 |
| 4558874 | Valve stem packing assembly A valve body has a stem passage rotatably receiving a valve stem. A packing surrounds the stem in the passage and a packing nut threaded on the stem applies axial force to radially expand the packing into sealing engagement with the stem and passage wall.... | 12/17/1985 |
| 4410189 | Resilient seal ring assembly with spring means applying force to wedge member A ring seal (11) adapted for installation in an annular recess (13) between a housing (15) and a rotating or reciprocating shaft (17). The seal (11) consists of a resilient ring cup member (19) having a ring wedge member (21) inserted in the center recess... | 10/18/1983 |
| 4406468 | Seal assembly This invention is a seal assembly for sealing fluid needles, spindles and other movable cylindrical objects where a fluid tight seal is needed between the fluid and non-fluid sides of the movable cylindrical object. The seal includes a packing member with... | 09/27/1983 |
| 4185807 | Plastic valve An all-plastic valve including a molded plastic housing, a molded plastic retaining nut, and a molded plastic valve stem.... | 01/29/1980 |
| 4103942 | Seal for submersible pipe swivel A submersible large diameter pipe swivel is provided with seal means which is designed and adapted to allow small radial and axial relative movements (wobble) between the pipe and the swivel joint, while maintaining full integrity of the seal and which, b... | 08/01/1978 |
