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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7661884 | Roller apparatus A roller apparatus includes a rotating roller, a bushing frictionally supporting the rotating roller, a frame having a bushing hole into which a bushing is inserted and supporting the bushing, and a grounding member interposed between the bushing and the frame and g... | 02/16/2010 |
| 6679045 | Flexibly coupled dual shell bearing housing A bearing housing includes inner and outer shells through which a rotor shaft may extend. A service tube is fixedly joined to the inner shell and extends through a service aperture in the outer shell. A flexible coupling sealingly joins the service tube t... | 01/20/2004 |
| 6390683 | Heat insulation sleeve and bearing device for fixing roller A heat insulation sleeve and a bearing device using the heat insulation sleeve capable of reducing generation of periodical or sudden noises generated in the periphery of a fixing device are described. A flange of the heat insulation sleeve does not break... | 05/21/2002 |
| 6170990 | Trunnion bushing Corrosion is avoided in variable stator vanes through the use of an outer trunnion bushing that eliminates the galvanic corrosion potential of conventional bushings. The bushing has a plurality of layers arranged concentrically so as to include an innermo... | 01/09/2001 |
| 6109794 | Rolling contact bearing provided with a seal and an electrostatic current discharge device A rolling contact bearing is described with a sealing device suitable to discharge the electrostatic currents which accumulate in a autovehicle; the sealing device (13, 32) has at least one sealing element (17, 37, 43) made of elastic conductive material ... | 08/29/2000 |
| 5445457 | Electrically insulated self adjusting bearing A self adjusting bearing includes a load bearing having a cylindrical bore for carrying a rotating shaft. The load bearing is mounted for pivoting about an axis which is transverse to and intersects a longitudinal axis of the bore. The load bearing is sup... | 08/29/1995 |
| 5430590 | Spindle system for a disk drive A spindle system is comprised or a journal and thrust air bearing. The journal bearing; has two sets of opposing groove areas. The thrust air bearing has two sets of spiral grooves. The thrust air bearing is gimballed to compensate for misaligment. A bias... | 07/04/1995 |
| 5415478 | Annular bearing compartment The present invention relates to a bearing compartment for a turbomachine such as a gas turbine engine. The compartment includes a bearing compartment, to which is attached, on its front and rear sides, covers that allow for the passage of air through the... | 05/16/1995 |
| 5395171 | Polymer bearing housing A one-piece body portion injection molded of polysulfone or similar polymer has mounting portions for securing the bearing housing to a support surface and a transverse bore having a spherically concave annular bearing seat for tiltably supporting a conve... | 03/07/1995 |
| 5328272 | Spindle system for a disk drive A spindle system is comprised of a journal and thrust air bearing. The journal bearing has two sets of opposing groove areas. The thrust air bearing has two sets of spiral grooves. The thrust air bearing is gimballed to compensate for misalignment. A bias... | 07/12/1994 |
| 5321329 | Permanent magnet shaft bearing A permanent magnet shaft bearing includes a shaft bearing bushing and a flange bearing bushing which are magnetized to saturation. The outer surface of the shaft bearing bushing is magnetized to have the same polarity as the inner surface of the flange be... | 06/14/1994 |
| 5069559 | Bearing with selectable electrical conductivity A spherical bearing with selectable electrical conductivity includes a bearing body having a spherical supporting surface, a layer of electrically insulating material and a housing having a concave spherical seating surface which form a ball joint having ... | 12/03/1991 |
| 5062503 | Ablative brake bushing for axle thermal protection The ablative bushing (40, 140, 240) is disposed between a torque tube pedestal (18) and an axle (30) of an aircraft. The ablative bushing (40, 140) encircles an axle bushing (26) located around the axle (30), so as to be disposed between the torque tube p... | 11/05/1991 |
| 5040954 | In-tank type motor-operated pump In an in-tank type motor-operated pump having a brush motor (1), a bearing (15) for rotatably holding a rotor shaft (5) is covered with a heat resistant insulating material (25) and is mounted in a bracket (22) in which brushes (4) are slidably held, ther... | 08/20/1991 |
| 4964015 | Electrically conductive chair support with sliding bushing A chair for conducting the electrostatic charge of an occupant to the floor on which the chair rests, with the chair seat carried on a support unit which permits rotation of the seat and adjustment of the height of the seat above the floor. The support un... | 10/16/1990 |
| 4896975 | Ceramic air bearing shaft A ceramic shaft machinery element having an incorporated cooled bearing runner surface providing superior support for the ceramic shaft.... | 01/30/1990 |
| 4717870 | Slasher moisture monitoring system An improved fabric moisture monitoring system and method particularly adapted for use on a slasher unit comprises utilizing the delivery roller associated with the conventional slasher unit to facilitate moisture monitoring. Both ends of the delivery roll... | 01/05/1988 |
| 4715732 | Bearing assemblies for motors An air cooled bearing assembly for the armature shaft of an electric motor comprises a heat sink with an axial bore and spaced outwardly extending fins along its external surface. The fins are of a greater depth over part of their length and the junction ... | 12/29/1987 |
| 4702526 | Hub assembly A hub assembly for a drivable wheel of a motor vehicle, with a hub member 10, a bearing assembly with an outer race 20 and an inner race 21, and a constant velocity universal joint with an outer member 16 and inner member 17, wherein torque is transmitted... | 10/27/1987 |
| 4410285 | Ceramic and metal article and method of making it An article comprising a component of ceramic material and a metal component has a metal felt located between opposed faces of the two components, the metal felt being permanently joined to both the ceramic face and the metal face to join the two component... | 10/18/1983 |
