US3107083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact hammer
Assignee: Individual
•
Filing: 1960-07-01
•
Granted: 1963-10-15
•
Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Charles W Pewthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D11/102; B25D11/106; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024; Y10T74/18056; Y10T74/18296; Y10T74/18304
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A HYDRAULIC IMPACT HAMMER COMPRISING, A HOUSING, A ROTARY HYDRAULIC MOTOR MOUNTED ON THE HOUSING, THE OUTPUT SHAFT OF WHICH EXTENDS AXIALLY INTO THE HOUSING, AN IMPACT SHAFT MOUNTED AXIALLY IN THE HOUSING FOR BOTH ROTATION AND LIMITED AXIAL MOVEMENT RELATIVE THERETO, A DRIVING CONNECTION CONNECTING THE OUTPUT SHAFT TO THE IMPACT SHAFT, A CAM FORMED ON THE IMPACT SHAFT, A CAM CYLINDER FIXED TO THE HOUSING, SAID IMPACT SHAFT ROTATABLY EXTENDING THROUGH THE CAM CYLINDER, A PAIR OF COMPLEMENTARY MATING FACES ON THE CAM AND CAM CYLINDER, EACH SAID FACE COMPRISING SUBSTAN-
Claim 2
Dependent Claim
93 words
A HYDRAULIC IMPACT HAMMER COMPRISING, A HOUSING, A ROTARY HYDRAULIC MOTOR MOUNTED ON THE HOUSING, THE OUTPUT SHAFT OF WHICH EXTENDS AXIALLY INTO THE HOUSING, AN IMPACT SHAFT MOUNTED AXIALLY IN THE HOUSING FOR BOTH ROTATION AND LIMITED AXIAL MOVEMENT RELATIVE THERETO, A DRIVING CONNECTION CONNECTING THE OUTPUT SHAFT TO THE IMPACT SHAFT, A CAM FORMED ON THE IMPACT SHAFT, A CAM CYLINDER FIXED TO THE HOUSING, SAID IMPACT SHAFT ROTATABLY EXTENDING THROUGH THE CAM CYLINDER, A PAIR OF COMPLEMENTARY MATING FACES ON THE CAM AND CAM CYLINDER, EACH SAID FACE COMPRISING SUBSTAN-
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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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |