US3625006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage hydraulic booster
Assignee: VITAS THOMAS 158 LAKEFIELD COURT RACINE WI 53402-3103
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Filing: 1969-10-08
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Granted: 1971-12-07
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Expires: 1989-10-08
Abstract
Abstract AN AIR ACTUATED TWO-STAGE HYDRAULIC BOOSTER INCLUDING AN AIR ACTUATED PISTON AND CYLINDER ASSEMBLY AND A LOW PRESSURE HYDRAULIC PISTON AND CYLINDER ASSEMBLY ACTUATED BY THE AIR ACTUATED ASSEMBLY, A HIGH PRESSURE PISTON AND CYLINDER ASSEMBLY INCORPORATED WITHIN THE OW PRESSURE HYDRAULIC ASSEMBLY AND A PRESSURE RESPONSIVE RELIE VALVE TO RELEASE THE PRESSURE IN THE LOW PRESSURE ASSEMBLY TO PROVIDE A SINGLE SHOT OF HIGH PRESSURE FLUID FROM THE HIGH PRESSURE ASSEMBLY.
Inventors
- 👤 Thomas J Schoenleben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
F; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |