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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 |
| 7374257 | Machine track roller assembly A track-type work machine is provided, including a roller frame and a track extending about the roller frame. A track roller is mounted along the roller frame and rotatable against the track. The track roller is rotatably supported by a bearing that includes a shaft... | 05/20/2008 |
| 7261488 | Ball socket ring seal A ball socket ring seal for use with a ball joint assembly eliminates the need for a boot or bellows to protect the ball joint against the environment. The ball socket ring seal of the invention is positioned between the ball and the socket at the point of contact b... | 08/28/2007 |
| 7235016 | Universal joint lubrication A universal joint has a ball retainer having a retainer body made of a structurally rigid material and a relatively soft elastomeric seal bonded to the body at an axial end in a recess so as to wipe lubricant back on the ball that is retained by the body. Cavity pla... | 06/26/2007 |
| 6974108 | Lower bearing for aircraft landing gear An improved split bearing for use with an aircraft landing gear assembly is disclosed. The split bearing includes first and second semi-cylindrical sleeve components adapted for installation in surrounding relation with the piston tube of a hydraulically actuated la... | 12/13/2005 |
| 6626575 | Spherical plain bearing with spread lock dual sealing means An improved seal configuration for use primarily with a spherical plain bearing wherein the sealing member includes a base with two outwardly extending lips, one extending in an inner direction and one extending in an outer direction. Both of the lips eng... | 09/30/2003 |
| 6502993 | Sealing system for a spherical bearing A sealing system of a spherical bearing is constituted in such a manner that annular seal grooves are provided on an inner spherical surface of an outer race with a given space from an edge of the spherical surface, seals are fit in the seal grooves and a... | 01/07/2003 |
| 6390700 | Absolute location low wear bearing for an imaging apparatus A bearing for an imaging apparatus includes a first bearing flank including a first bearing surface having a shape in cross-section defined by a first arc having a first radius extending from a first surface axis. The bearing further includes a second bea... | 05/21/2002 |
| 5993065 | Universal slider bushing A universal slider bushing includes an inner body within an outer body. The inner body has a convex spherical segment. The outer body has a concave spherical segment or socket supporting the convex spherical segment for universal movement. The inner body ... | 11/30/1999 |
| 5964325 | S-cam brake bushing cartridge An improved bushing assembly for the inboard end of a brake cam shaft is provided with a bushing which establishes a grease flow pathway within the bushing assembly. Grease enters a cavity formed from a pair of housing halves which contain the bushing thr... | 10/12/1999 |
| 5242228 | Spherical slide bearing A spherical slide bearing having dust covers fixed by outer sealing collar portions interposed between a housing and a bearing or bearings. The interposed outer sealing collar portions of the dust covers are retained by flange portions of the housing and ... | 09/07/1993 |
| 5238310 | Bearing assemblies There is provided in combination a shaft and a bearing assembly on the shaft comprising a bush having a cylindrical bore in which the shaft is received and a part-spherical outer periphery, and opposed housing members secured, or adapted to be secured, to... | 08/24/1993 |
| 4911564 | Protective bearing guard A bearing guard is adapted for use in connection with a machine such as a chipping/shredding/grinding machine for lawn and garden use. The bearing guard is used in connection with self-aligning bearings which support the ends of a rotatable shaft provided... | 03/27/1990 |
| 4836694 | Bearing seal Seal for bearings having inner and outer rings comprising a sealing ring mounted in a cylindrical recess in one of the bearing rings and defining a radial clearance between the axially oriented shank of a retaining ring having an L-shaped cross section an... | 06/06/1989 |
| 4826331 | Protective bearings guard A bearing guard is adapted for use in connection with a machine such as a chipping/shredding/grinding machine for lawn and garden use. The bearing guard is used in connection with self-aligning bearings which support the ends of a rotatable shaft provided... | 05/02/1989 |
| 4768889 | Sealed bearing assemblies A seal assembly for sealing between a pair of bearing rings wherein one of the rings has an annular groove for the seal comprising elastic annular ring member having at least one circumferential projection and at least one sealing disk and a retainer memb... | 09/06/1988 |
| 4659240 | Bearing protector A bearing protector attached to a shaft abuts against the inner race of a bearing mounted to a housing. The body of the protector extends over substantially all of the outer race. The protector does not contact the outer race due to a running clearance. S... | 04/21/1987 |
| 4649853 | Siren A siren comprises a compressed air supply which is deflected by stationary deflectors to exit radially through stator ports. A rotor with spaced ports rotates between the stator and deflector thereby opening and closing the stator ports. Stationary vanes ... | 03/17/1987 |
| 4483569 | Sealed ball and socket joints capable of disassembly Sealed ball and socket joints having a spherical member capable of swiveling relative to a socket member. A bearing ring disposed with or without clearance in a housing has a concave spherical surface portion in swiveling engagement with the ball member, ... | 11/20/1984 |
| 4447094 | Prelubricated sealed bearings A sealed bearing prepacked with lubricant, and provided with a sealing shell press-fitted over the bearing outer member or housing. The sealing shell has a radially disposed end flange holding the terminal flange of a bellows seal made of elastomeric mate... | 05/08/1984 |
| 4190302 | Sealed lined bearings A resilient seal material is compressibly held against the side of a lined bearing at the juncture between the inner and outer race of the bearing with a formed ring fastened to the side of the outer race. The formed ring extends outward with the inner di... | 02/26/1980 |
| 4130324 | Seal means for a self-aligning bearing The invention contemplates elastomeric-seal application to the so-called plain-spherical variety of self-aligning bearing wherein the outer ring is the product of a swaging operation which causes it to conform its cylindrical bore to a spherical surface a... | 12/19/1978 |
| 4109976 | Self-aligning bushing A self-aligning bushing is described which includes an inner spherical ball or ring with an outer socket or ring thereon, seals being provided engaged in sockets in an inner face of the outer ring and in sockets in an outer face of the inner ball or ring,... | 08/29/1978 |
| 4080013 | Sealed self-aligning spherical bushing A self-aligning spherical bushing whose spherical mating surfaces are protected by a seal of unique construction which keeps out water, dust, dirt, etc. but freely permits the bearing to have a wide range of movement.... | 03/21/1978 |
