Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7036824 | Device for the float mounting a sealed housing A device for float mounting a sealed housing around a rotating, deflecting shaft. A sealed housing is connected to a static part in such a way that it can yield radially as well as rotate around a shaft axis at least to a small extent. ... | 05/02/2006 |
| 6860484 | Rotor seal with folding strip A rotor seal, especially for turbo engines, is described. The sealing elements are folded from a pleated band and are connected to each other even when the rotor seal is in the assembled state. The barrier effect of the inventive rotor seal is thus increased in rela... | 03/01/2005 |
| 6776419 | Seal for a reciprocating plunger A seal for a reciprocating plunger is formed of a hard polyimide plastic, rather than the relatively soft elastomers of earlier seals. The present seal has a conical section, with the tapered face fitting closely within the mating conical face of a hard metal retain... | 08/17/2004 |
| 6672593 | Variable pressure washer A variable pressure washer has two interlocking channel rings separated by a channel and retained by a captive set of fasteners. Within the channel between the rings are multiple rows of springs having at least two different spring moduli. The washer is p... | 01/06/2004 |
| 6254103 | Seal A seal comprises a support member having an outer periphery of substantially circular form, and a resilient seal member mounted upon the support member, the seal member, when occupying a relaxed condition, having an outer periphery of generally circular f... | 07/03/2001 |
| 6082740 | Bolted-ring seal casing for hydrogen cooled generators A seal ring assembly for a generator includes an upper seal casing having a first radially inwardly directed channel for supporting at least one seal segment therein, the upper seal casing having a removable cap forming one side of the inwardly directed c... | 07/04/2000 |
| 5769428 | Device for sealing a hood that protects a tumbling barrel A device for oil-impermeably sealing a stationary hood (6) off from a rotating, tumbling barrel, containing at least one stationary packing cord (7) which is forced against a race (8) by a pre-stressed and compressed gasket (9). The race is part of the ba... | 06/23/1998 |
| 5277489 | Portable batch mixing apparatus for cementitious construction materials A portable system for on-site batch mixing of cementitious materials, such as mortar and grout, includes a batch mixing machine for metering and mixing cement, sand and water, a cement storage silo sized to hold at least one commercial delivery truckload ... | 01/11/1994 |
| 4893656 | Diverter valve A diverter valve includes a valve body formed with a pair of openings. Inlet ends of a pair of discharge tubes are respectively carried by and extend through these openings. An elongated elastomeric strp then may be wound about each tube extended end to f... | 01/16/1990 |
| 4875691 | Radial seal A radial seal for use in connection with a cylindrical rotatable member passing through a stationary member which includes a circular floating shoe mounted to the stationary member and surrounding the rotatable member in order to accommodate axial, latera... | 10/24/1989 |
| 4750746 | Device for attaching a seal member to a shaft A device for attaching a seal to a shaft wherein the seal is mounted on a hoop which, in turn, is mounted on the end of a shaft. A second, resilient hoop member is interposed between the seal and a flange on the shaft to exert a compressive force on the s... | 06/14/1988 |
| 4554748 | Multi-segment seal ring for rotary equipment A multi-segment seal ring for rotary equipment of the type involving a relatively large-diameter rotary cylinder supported with its axis horizontal by one or more fixed housings, seals being employed between the cylinder and at least one of the housings. ... | 11/26/1985 |
| 4534571 | Circumferential sealing assembly A circumferential sealing assembly for use with a generally cylindrical, rotatable liquid metal reaction vessel and a hood which is provided to collect hot gases from the reaction vessel. The sealing assembly comprises a cable and a cable housing. The cab... | 08/13/1985 |
| 4502702 | Segmented seal for rotary equipment A seal assembly for effecting a seal between a stationary housing and a rotatable cylinder includes a plurality of arcuate segments radially disposed about the outer circumference of the cylinder. Each segment has an axial sealing surface defining a radiu... | 03/05/1985 |
| 4200345 | Large-diameter dust guard for a locomotive axle bearing The axial gap between the rotatable hub of a locomotive wheel and the relatively stationary thrust flange of an adjacent axle bearing is covered by a dust guard comprising an annular band of elastomeric material firmly secured to the circumference of the ... | 04/29/1980 |
| 4025079 | Traction motor suspension bearing lubrication A traction motor suspension bearing assembly includes a member which engages an axle surface to restrict lubricant losses.... | 05/24/1977 |
| 3934813 | Concrete pump valve A valve for a concrete pump having a front valve closing portion which in the closed position prevents flow through a T-pipe section, a supporting structure secured to the T-pipe section and an annular sealing band carried by the supporting structure and ... | 01/27/1976 |
