US3336948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-pneumatic accumulator
Assignee: Recherches Etudes Production REP SARL
•
Filing: 1965-01-18
•
Granted: 1967-08-22
•
Expires: 1985-01-18
Abstract
No abstract record available.
Inventors
- 👤 Lucien Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:40
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/103; F15B1/24; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/315; F15B2201/3153; F15B2201/32; F15B2201/40; F15B2201/41; F15B2201/413; F15B2201/415; F15B2201/4155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A HYDRO-PNEUMATIC SAFETY ACCUMULATOR COMPRISING A CYLINDER, A PISTON FREELY SLIDABLE IN THE CYLINDER AND FORMING THEREIN, ON THE ONE HAND, A WORKING CHAMBER AND, ON THE OTHER, AN AIRTIGHT ACCUMULATION CHAMBER, AND IN THE SAID AIRTIGHT ACCUMULATION CHAMBER A DEFORMABLE SEALED BELLOWS CONTAINING A GASEOUS FLUID, A CONSTANT VOLUME OF HYDRAULIC FLUID IN SAID ACCUMULATION CHAMBER EXTERNALLY OF SAID BELLOWS SEPARATING THE BELLOWS FROM THE SAID PISTON.
Claim 2
Dependent Claim
68 words
A HYDRO-PNEUMATIC SAFETY ACCUMULATOR COMPRISING A CYLINDER, A PISTON FREELY SLIDABLE IN THE CYLINDER AND FORMING THEREIN, ON THE ONE HAND, A WORKING CHAMBER AND, ON THE OTHER, AN AIRTIGHT ACCUMULATION CHAMBER, AND IN THE SAID AIRTIGHT ACCUMULATION CHAMBER A DEFORMABLE SEALED BELLOWS CONTAINING A GASEOUS FLUID, A CONSTANT VOLUME OF HYDRAULIC FLUID IN SAID ACCUMULATION CHAMBER EXTERNALLY OF SAID BELLOWS SEPARATING THE BELLOWS FROM THE SAID PISTON.
References Cited (Backward Citations)
US2683467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |