Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5044910 | Vane pump with rotatable drive means for vanes | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-09-03 |
| 5033946 | Rotary vane machine with back pressure regulation on vanes | Hiroshi Sakamaki, Kenji Tanzawa | 1991-07-23 |
| 5032070 | Rotary machine having axially biased ring for limiting radial vane movement | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-07-16 |
| 5030074 | Rotary machine with dynamic pressure bearing grooves on vane guide ring | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-07-09 |
| 5022842 | Vane pump with rotatable annular ring means to control vane extension | Hiroshi Sakamari, Takeshi Jinnouchi, Kenji Tanzawa | 1991-06-11 |
| 5011390 | Rotary vane machine having stopper engaging recess in vane means | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-04-30 |
| 5002473 | Vane pump with annular ring and cylindrical slide as vane guide | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-03-26 |
| 4998868 | Vane pump with sliding members on axial vane projections | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-03-12 |
| 4998867 | Rotary machine having axial projections on vanes closer to outer edge | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-03-12 |
| 4997351 | Rotary machine having vanes with embedded reinforcement | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-03-05 |
| 4997353 | Vane pump with dynamic pressure bearing grooves on vane guide ring | Hiroshi Sakamaki, Takeshi Jinnouchi, Kenji Tanzawa | 1991-03-05 |
| 4958995 | Vane pump with annular recesses to control vane extension | Hiroshi Sakamaki, Takeshi Jinnouchi, 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, Takeshi Jinnouchi, Kenji Tanzawa | 1990-09-11 |
| 4917584 | Vane pump with annular aetainer limiting outward radial vane movement | Hiroshi Sakamaki, Takeshi Jinnouchi | 1990-04-17 |
| 4898526 | Vane pump with axial inlet and peripheral tangential outlet | Hiroshi Sakamaki, Takeshi Jinnouchi | 1990-02-06 |
| 4799867 | Vane pump with brittle vanes and rough finished housing surface | Hiroshi Sakamaki, Kenji Tanzawa | 1989-01-24 |
| 4681519 | Rotor for rotary fluid pump | Hiroshi Sakamaki, Susumu Sugishita | 1987-07-21 |
| 4657493 | Rotary-sleeve supporting apparatus in rotary compressor | Hiroshi Sakamaki, Kikuji Yanagihashi | 1987-04-14 |
| 4657495 | Rotor-shaft bearing apparatus for rotary compressors | Hiroshi Sakamaki, Susumu Sugishita | 1987-04-14 |
| 4649612 | Method of manufacturing a rotor for rotary fluid pumps | Hiroshi Sakamaki, Susumu Sugishita, Hiroshi Okamura, Kenji Shimizu | 1987-03-17 |
| 4648818 | Rotary sleeve bearing apparatus for a rotary compressor | Hiroshi Sakamaki, Susumu Sugishita, Kikuji Yanagihashi | 1987-03-10 |
| 4648819 | Vane-type rotary compressor with rotary sleeve | Hiroshi Sakamaki, Susumu Sugishita | 1987-03-10 |
| 4620837 | Vane-type rotary compressor having a sleeve for rotation with vanes | Hiroshi Sakamaki, Kikuji Yanagihashi | 1986-11-04 |
| 4605695 | Heat- and abrasion-resistant coating material | Hiroshi Sakamaki, Kikuji Yanagihashi | 1986-08-12 |
| 4601647 | Hollow rotor for movable vane pumps and the like and method of making the same | Hiroshi Sakamaki, Susumu Sugishita | 1986-07-22 |