US3211028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact wrench
Assignee: Individual
•
Filing: 1963-11-15
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Granted: 1965-10-12
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Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Christensson Kjell Ivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:53
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/004; B25B21/005; B25B13/00; B25B13/46; B25B13/461; B25B13/462; B25B13/463; B25B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN IMPLEMENT FOR TIGHTENING AND LOOSENING NUTS AND THE LIKE, COMPRISING A KEY ADAPTED TO FIT THE NUT OR THE LIKE TO BE TIGHTENED OR LOOSENED, AN ARM PROJECTING LATERALLY FROM SAID KEY, A PIVOT SHAFT CARRIED BY SAID ARM PERPENDICULAR THERETO AND OFFSET FROM SAID KEY, SAID ARM HAVING TWO OPPOSITE CONVEX ARCUATE BORDERS APPROXIMATELY CONCENTRIC WITH SAID PIVOT SHAFT, A RETAINER PIVOTALLY CONNECTED TO SAID ARM BY SAID PIVOT SHAFT AND SWINGABLE ABOUT SAID PIVOT SHAFT RELATIVE TO SAID ARM, A PNEUMATIC HAMMER SECURED TO SAID RETAINER AND HAVING A RECIPROCABLE RAMMER, SAID RETAINER BEING SWINGABLE ABOUT SAID PIVOT SHAFT BETWEEN A FIRST POSITION IN WHICH SAID RAMMER IS ENGAGEABLE WITH ONE OF SAID CONVEX ARCUATE BORDERS TO TIGHTEN SAID NUT OR THE LIKE AND A SECOND POSITION IN WHICH SAID RAMMER IS ENGAGEABLE WITH THE OTHER OF SAID CONVEX ARCUATE BORDERS TO LOSSEN SAID NUT OR THE LIKE.
Claim 2
Dependent Claim
151 words
AN IMPLEMENT FOR TIGHTENING AND LOOSENING NUTS AND THE LIKE, COMPRISING A KEY ADAPTED TO FIT THE NUT OR THE LIKE TO BE TIGHTENED OR LOOSENED, AN ARM PROJECTING LATERALLY FROM SAID KEY, A PIVOT SHAFT CARRIED BY SAID ARM PERPENDICULAR THERETO AND OFFSET FROM SAID KEY, SAID ARM HAVING TWO OPPOSITE CONVEX ARCUATE BORDERS APPROXIMATELY CONCENTRIC WITH SAID PIVOT SHAFT, A RETAINER PIVOTALLY CONNECTED TO SAID ARM BY SAID PIVOT SHAFT AND SWINGABLE ABOUT SAID PIVOT SHAFT RELATIVE TO SAID ARM, A PNEUMATIC HAMMER SECURED TO SAID RETAINER AND HAVING A RECIPROCABLE RAMMER, SAID RETAINER BEING SWINGABLE ABOUT SAID PIVOT SHAFT BETWEEN A FIRST POSITION IN WHICH SAID RAMMER IS ENGAGEABLE WITH ONE OF SAID CONVEX ARCUATE BORDERS TO TIGHTEN SAID NUT OR THE LIKE AND A SECOND POSITION IN WHICH SAID RAMMER IS ENGAGEABLE WITH THE OTHER OF SAID CONVEX ARCUATE BORDERS TO LOSSEN SAID NUT OR THE LIKE.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |