Patent US3377786A successfully refreshed from Google Patents.
US3377786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaking mechanism
Assignee: FMC Corp
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Filing: 1963-10-28
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Granted: 1968-04-16
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Edgemond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:06
CPC Classifications
A; A01; A01D; A01D46/00; A01D46/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SHAKING MECHANISM FOR APPLYING SHOCK FORCES TO AN OBJECT HELD THEREBY, SAID MECHANISM COMPRISING A GRIPPING HEAD FOR SECURELY GRIPPING SAID OBJECT, A POWER CYLINDER, A PISTON RECIPROCABLE WITHIN SAID CYLINDER, SAID PISTON BEING CONNECTED WITH SAID GRIPPING HEAD, AND MEANS FOR ALTERNATELY DIRECTING HYDRAULIC FLUID TO OPPOSITE ENDS OF SAID CYLINDER TO RECIPROCATE SAID GRIPPING HEAD, SAID MEANS INCLUDING A PAIR OF HYDRAULIC LINES ARRANGED TO SEPARATELY COMMUNICATE WITH SAID OPPOSITE ENDS OF THE CYLINDER FOR ALTERNATELY FEEDING AND DISCHARGING SAID HYDRAULIC FLUID THEREFROM.
Claim 2
Dependent Claim
86 words
A SHAKING MECHANISM FOR APPLYING SHOCK FORCES TO AN OBJECT HELD THEREBY, SAID MECHANISM COMPRISING A GRIPPING HEAD FOR SECURELY GRIPPING SAID OBJECT, A POWER CYLINDER, A PISTON RECIPROCABLE WITHIN SAID CYLINDER, SAID PISTON BEING CONNECTED WITH SAID GRIPPING HEAD, AND MEANS FOR ALTERNATELY DIRECTING HYDRAULIC FLUID TO OPPOSITE ENDS OF SAID CYLINDER TO RECIPROCATE SAID GRIPPING HEAD, SAID MEANS INCLUDING A PAIR OF HYDRAULIC LINES ARRANGED TO SEPARATELY COMMUNICATE WITH SAID OPPOSITE ENDS OF THE CYLINDER FOR ALTERNATELY FEEDING AND DISCHARGING SAID HYDRAULIC FLUID THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |