US3605916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic hammer
Assignee: Individual
•
Filing: 1969-11-18
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Granted: 1971-09-20
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Expires: 1989-11-18
Abstract
Abstract A HYDRAULIC HAMMER FOR ROCK BREAKING HAS A CYLINDER ACCOMMODATING A PISTON WHICH IS CONNECTED TO THE WORKING MEMBER AND PERFORMS THE WORKING STROKE UNDER THE ACTION OF COMPRESSED GAS, AND THE REVERSE STROKE UNDER THE ACTION OF PRESSURIZED FLUID, MEANS BEING PROVIDED IN THE HAMMER PERMITTING THE PISTON TO DEFLECT TOGETHER WITH THE WORKING MEMBER, FROM THE CYLINDER AXIS UNDER THE EFFECT OF LATERAL FORCES ARISING AS A RESULT OF THE IMPACT, PRODUCED BY THE WORKING MEMBER AGAINST AN UNEVER ROCK SURFACE. DAMPING ARRANGEMENTS ARE PROVIDED TO DAMP THE RESIDUAL ENERGY OF THE WORKING MEMBER DURING THE IMPACT.
Inventors
- 👤 Bogdan Vyachesla Voitsekhovsky
- 👤 Faina Fedorovn Voitsekhovskaya
- 👤 Timofei Fedorovich Gorbachev
- 👤 Grigory Yankelevich Shoikhet
- 👤 Vladimir Alexandrovic Girinsky
- 👤 Vladimir Fedorovich Krylov
- 👤 Alexandr Ivanovich Buteev
- 👤 Dmitry Timofeevich Gorbachev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:48
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/06; B25D9/12; B25D17/00; B25D17/08; Y; Y10; Y10S; Y10S173/00; Y10S173/04
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |