Patent US3319724A successfully refreshed from Google Patents.
US3319724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demolition device
Assignee: Individual
•
Filing: 1965-02-17
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Granted: 1967-05-16
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Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Wesley B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:30
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
93 words
AN IMPACT IMPARTING DEVICE COMPRISING: AN ELONGATED HOLLOW HOUSING; AN IMPACT MEMBER MOUNTED IN THE HOUSING AND EXTENDABLE OUTWARDLY THEREOF; THE IMPACT MEMBER INCLUDING A SHAFT AND A STRIKING HEAD; 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; THE SHAFT BEING OF ELONGATED HOLLOW CONSTRUCTION; A WEIGHT HAVING UPPER AND LOWER ENDS, SLIDABLY MOUNTED IN THE SHAFT; SPRINGS ARRANGED ON OPPOSITE ENDS OF THE WEIGHT; AND RELEASE MEANS TO PERMIT MOVEMENT OF THE IMPACT MEMBER.
Claim 2
Dependent Claim
93 words
AN IMPACT IMPARTING DEVICE COMPRISING: AN ELONGATED HOLLOW HOUSING; AN IMPACT MEMBER MOUNTED IN THE HOUSING AND EXTENDABLE OUTWARDLY THEREOF; THE IMPACT MEMBER INCLUDING A SHAFT AND A STRIKING HEAD; 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; THE SHAFT BEING OF ELONGATED HOLLOW CONSTRUCTION; A WEIGHT HAVING UPPER AND LOWER ENDS, SLIDABLY MOUNTED IN THE SHAFT; SPRINGS ARRANGED ON OPPOSITE ENDS OF THE WEIGHT; AND RELEASE MEANS TO PERMIT MOVEMENT OF THE IMPACT MEMBER.
References Cited (Backward Citations)
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Cited
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US2017470A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |