The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 4371219 | Floating bush and outer bearing structure for mounting a shaft in a body rotatably A bearing structure for supporting a shaft in a body is disclosed in which a floating bush is fitted over the shaft and the bush is supported in a cylindrical bearing which is fitted fixedly in the body. Lubricant is supplied to the outside of the cylindr... | 02/01/1983 |
| 4362343 | Axial bearing The invention relates to an axial bearing comprising a shaft 1 with a disc 2, said disc having grooves 7 and cooperates with a stationary disc 5,6 made from elastomeric material the bearing being based upon the principle that the flank 8 or flanks 8,9 of ... | 12/07/1982 |
| 4218933 | Rack and pinion gear assembly A rack and pinion gear assembly 10 (FIG. 1) includes a resilient bushing which urges the rack into meshing engagement with the pinion. An arcuate inside bearing surface 54 (FIG. 4) of the bushing 18 has a larger radius of curvature than the curved outside... | 08/26/1980 |
| 4212505 | Bearing assemblies A railway bearing housing has a cylindrical bore in which a cylindrical bearing liner is seated to receive a railway vehicle axle, at least one cavity being formed in the lower part of the housing and extending along the length of the housing to contain l... | 07/15/1980 |
| 4189985 | Fabric-lined epoxy resin cylinder with lubricant retaining grooves A woven seamless sleeve including axial yarns forms the inner face of an epoxy resin cylinder for an air operated linear actuator. Under certain conditions, a minute, internal, spiral groove develops in applying the resin. In the operation of the actuator... | 02/26/1980 |
| 4159152 | Means for lubricating the roll neck/sleeve interface of an oil film bearing An oil film bearing for a roll neck in a rolling mill, wherein a sleeve with a tapered bore in mounted on a tapered section of the roll neck for rotation therewith, the sleeve being journalled in a non-rotatable bushing contained in a bearing chock. Durin... | 06/26/1979 |
| 4149761 | Water lubricated stave bearing A water lubricated rubber bearing is disclosed in which a compliment of staves is positioned within a bearing housing having a cylindrical inner bearing housing surface. When unstressed, the stave can be moved within the housing for installation or remova... | 04/17/1979 |
| 4105267 | Bearing provided with oblique oil grooves and/or with a plurality of obliquely arranged rows of semicircular indentations An improved bearing provided with either one or two or more of an oil groove, oil indentation, oil indent pattern and the like formed in the internal surface of a semi-circular cylindrical bearing or semi-circular bearing component. The sum of the lengths... | 08/08/1978 |
| 4090748 | Device for lubricating rear bush in extension housing of automotive transmission The oil grooves which are formed in the bore of a hollow rear bushing that is disposed adjacent to the rear end of an extension housing of an automotive transmission are provided in such a pattern that upon rotation of the output shaft or sleeve journalle... | 05/23/1978 |
| 3993370 | Lubricated bearing structure A bearing structure is provided for use in machinery wherein certain components thereof operate at high rotational speeds. The structure includes a shaft mounted for rotation within a stationary housing member. A pair of bearings, arranged in longitudinal... | 11/23/1976 |
| 3971606 | Water lubricated bearing device Water lubricated bearing devices best adapted to be used in water or sea water are disclosed wherein a composite bearing member comprising an elastic bearing member lined with a thermoplastic resin compound is anchored to the inner wall of a bush fitted i... | 07/27/1976 |
| 3953089 | Press fit bearing A cylindrical bearing formed of an alloy of powdered metal and arranged to be press fitted into a bearing mounting. The bearing includes a body having an axial bore and is provided between the bore and the periphery thereof with a plurality of circumferen... | 04/27/1976 |
| 3947160 | Housing and shaft arrangement The arrangement comprises an intermediate housing for a plural-rotor mainshaft of a rotary engine in which the housing is vertically split transverse to the shaft rotary axis, into two portions. Each housing portion, like the mainshaft itself, is of one-p... | 03/30/1976 |
| 3945695 | Fatigue bushing assembly A bushing for use in high strength materials where fatigue failure is a problem. The bushing is cylindrical and includes a circumferential lubrication groove on its inner surface while fillets and smooth transition surfaces are used to transition between ... | 03/23/1976 |