SKF Kugellagerfabriken GmbH
196Patents
0Active
196Granted
39Portfolio score
Filing activity: Sep 27, 1974 → Aug 16, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4589860A | Gear and method for making the same | Emerging Cross-Sectional Technologies | 115 | Expired |
| US4399898A | Device for releasably securing a shaft in a hub | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4194752A | Skateboard | Human Necessities | 35 | Expired |
| US4316175A | Method for the advance indication of damage to wheel bearings | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4610646A | Roller, especially a tension roller for a belt drive | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4219240A | Wheel for roller skates or the like | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US4440401A | Seal assembly for bearing cups slidable in axial direction in bore | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4080014A | Slide articulation bearing assembly | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4484376A | Blocking device for rovings on spinning machine draw frames | Textiles; Paper | 24 | Expired |
| US4236767A | Device for sealing and mounting a rolling-element bearing | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4512672A | Front seal for bearing cups | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4311348A | Linear motion ball bearings | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4138167A | Rolling bearing including lengthwise convex race rails | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4120544A | Self-pressurizing radial friction bearing | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4476614A | Method of adjusting a two row rolling bearing having adjustable prestress in the axial direction | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4443210A | Tension roller for belt drives | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4489992A | Self-aligning bearing | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4574448A | Apparatus for fastening machine element to a shaft | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4558502A | Process and apparatus for assembling universal joints | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4544168A | Seal between rotating concentric elements | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4451215A | Rotary piston apparatus | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4432741A | Joint means for transmitting a moment of rotation in both directions | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4516962A | Tension roller for drive belts | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4372628A | Bearing assembly | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4457740A | Pin for tension rollers | Mechanical Engineering; Lighting; Heating | 16 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.