Hurst; Ralph
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hurst; Ralph.The latest application filed is for "pressure actuated movable head for a resonant reciprocating compressor balance chamber".
- Hurst; Ralph - Clifton Park NY
| Patent | Date |
|---|---|
| Pressure actuated movable head for a resonant reciprocating compressor balance chamber Grant 4,836,757 - Curwen , et al. June 6, 1 | 1989-06-06 |
| Flat plunger linear electrodynamic machine Grant 4,814,650 - Curwen , et al. March 21, 1 | 1989-03-21 |
| Linear gas compressor Grant 4,721,440 - Hurst January 26, 1 | 1988-01-26 |
| Method of making a laminated stator Grant 4,642,882 - Castiglione , et al. February 17, 1 | 1987-02-17 |
| Involute lamination armature for a linear reciprocating motor Grant 4,210,831 - Hurst July 1, 1 | 1980-07-01 |
| Linear electric motor Grant 4,206,373 - Hurst June 3, 1 | 1980-06-03 |
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