Patent US3358779A successfully refreshed from Google Patents.
US3358779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demolition device
Assignee: Individual
•
Filing: 1967-02-10
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Granted: 1967-12-19
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Expires: 1987-02-10
Abstract
No abstract record available.
Inventors
- 👤 Wesley B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:18
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/32; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124; E02F3/96; E02F3/966
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN IMPACT IMPARTING DEVICE COMPRISING: AN ELONGATED HOLLOW HOUSING; THE HOUSING INCLUDING OPPOSITE ENDS; AN IMPACT MEMBER INCLUDING A SHAFT AND A STRIKING HEAD; FIXED COLLAR MEANS ON THE IMPACT MEMBER; A SLIDABLE COLLAR ON THE IMPACT MEMBER; A SPRING MEANS IN THE HOUSING ADAPTED TO BIAS THE IMPACT MEMBER IN ONE DIRECTION; MEANS TO LOAD THE IMPACT MEMBER IN OPPOSITION TO THE SPRING BIAS, SAID MEANS INCLUDING A HYDRAULIC CYLINDER WITH AN EXTENDABLE PORTION, AND LINKAGE MEANS CONNECTING THE EXTENDABLE PORTION OF THE HYDRAULIC CYLINDER WITH THE IMPACT MEMBER; CATCH MEANS MOUNTED ON ONE SIDE OF THE HOUSING TO ENGAGE THE IMPACT MEMBER IN ITS LOADED POSITION; THE LINKAGE MEANS BEING SECURED TO THE SLIDABLE COLLAR FOR MOVEMENT OF THE SLIDABLE COLLAR AGAINST THE SPRING BIAS; AND
Claim 2
Dependent Claim
128 words
AN IMPACT IMPARTING DEVICE COMPRISING: AN ELONGATED HOLLOW HOUSING; THE HOUSING INCLUDING OPPOSITE ENDS; AN IMPACT MEMBER INCLUDING A SHAFT AND A STRIKING HEAD; FIXED COLLAR MEANS ON THE IMPACT MEMBER; A SLIDABLE COLLAR ON THE IMPACT MEMBER; A SPRING MEANS IN THE HOUSING ADAPTED TO BIAS THE IMPACT MEMBER IN ONE DIRECTION; MEANS TO LOAD THE IMPACT MEMBER IN OPPOSITION TO THE SPRING BIAS, SAID MEANS INCLUDING A HYDRAULIC CYLINDER WITH AN EXTENDABLE PORTION, AND LINKAGE MEANS CONNECTING THE EXTENDABLE PORTION OF THE HYDRAULIC CYLINDER WITH THE IMPACT MEMBER; CATCH MEANS MOUNTED ON ONE SIDE OF THE HOUSING TO ENGAGE THE IMPACT MEMBER IN ITS LOADED POSITION; THE LINKAGE MEANS BEING SECURED TO THE SLIDABLE COLLAR FOR MOVEMENT OF THE SLIDABLE COLLAR AGAINST THE SPRING BIAS; AND
References Cited (Backward Citations)
US1731985A
Cited
US2517980A
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US2559478A
Cited
US2721491A
Cited
US3074155A
Cited
US3244241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |