Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5044910 | Vane pump with rotatable drive means for vanes | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-09-03 |
| 5032070 | Rotary machine having axially biased ring for limiting radial vane movement | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-07-16 |
| 5030074 | Rotary machine with dynamic pressure bearing grooves on vane guide ring | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-07-09 |
| 5022842 | Vane pump with rotatable annular ring means to control vane extension | Hiroshi Sakamari, Yukio Horikoshi, Kenji Tanzawa | 1991-06-11 |
| 5011390 | Rotary vane machine having stopper engaging recess in vane means | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-04-30 |
| 5002473 | Vane pump with annular ring and cylindrical slide as vane guide | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-03-26 |
| 4998868 | Vane pump with sliding members on axial vane projections | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-03-12 |
| 4998867 | Rotary machine having axial projections on vanes closer to outer edge | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-03-12 |
| 4997351 | Rotary machine having vanes with embedded reinforcement | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-03-05 |
| 4997353 | Vane pump with dynamic pressure bearing grooves on vane guide ring | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1991-03-05 |
| 4971306 | Seals for cylindrical surfaces | Hirochi Matsumoto, Tetsuya Iguchi | 1990-11-20 |
| 4958995 | Vane pump with annular recesses to control vane extension | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1990-09-25 |
| 4955985 | Vane pump with annular ring for engaging vanes and drive means in which the rotor drives the annular ring | Hiroshi Sakamaki, Yukio Horikoshi, Kenji Tanzawa | 1990-09-11 |
| 4943069 | Shaft seal disposed about a rotatable shaft | — | 1990-07-24 |
| 4917584 | Vane pump with annular aetainer limiting outward radial vane movement | Hiroshi Sakamaki, Yukio Horikoshi | 1990-04-17 |
| 4898526 | Vane pump with axial inlet and peripheral tangential outlet | Hiroshi Sakamaki, Yukio Horikoshi | 1990-02-06 |
| 4292885 | Bellows apparatus | — | 1981-10-06 |
| 4287814 | Bellows apparatus | — | 1981-09-08 |
| 4183289 | Bellows apparatus | — | 1980-01-15 |