US3268014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary impact hammer
Assignee: Individual
•
Filing: 1964-04-17
•
Granted: 1966-08-23
•
Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ambrose W Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:18
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D11/102; B25D17/00; B25D17/005; B23; B23B; B23B2250/00; B23B2250/12; B23B2250/124; B25D2211/00; B25D2211/06; B25D2211/062; B25D2211/065
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A ROTARY IMPACT HAMMER FOR USE WITH A PORTABLE ELECTRIC DRILL HAVING A CASE AND A DRIVE SHAFT PROTRUDING THEREFROM COMPRISING AN ELONGATED HOLLOW HOUSING ARRANGED FOR ATTACHMENT TO SAID CASE AT ONE END, A SPINDLE JOURNALLED IN SAID HOUSING FOR ROTARY AND LIMITED AXIAL MOVEMENT RELATIVE TO SAID HOUSING, DETACHABLE COUPLING MEANS ON SAID SPINDLE ENGAGING DRIVE SHAFT, A CYLINDRICAL HAMMER SLIDABLY MOUNTED SAID SPINDLE, MEANS ON SAID SPINDLE ENGAGING SAID HAMMER ARRANGED TO PERMIT RECIPROCAL MOVEMENT OF SAID HAMMER ON SAID SPINDLE, AN ANVIL ON SAID SPINDLE SPACED RELATIVE TO SAID HAMMER AND POSITIONED FOR ENGAGEMENT BY SAID HAMMER, SPRING MEANS ON SAID SPINDLE BIASING SAID HAMMER TOWARD SAID ANVIL, CIRCUMFERENTIALLY ARRANGED INTERCONNECTING CAM MEANS ON SAID HAMMER, AN APERTURED SLEEVE RECEIVED IN SAID HOUSING, ROTATABLE CAM FOLLOWERS POSITIONED IN SAID APERTURED SLEEVE FOR REGISTRY WITH SAID CAM MEANS.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |