Patent US3326032A successfully refreshed from Google Patents.
US3326032A
Expired / Lapsed
US
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Self-retaining key
Assignee: Individual
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Filing: 1964-06-17
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Granted: 1967-06-20
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Expires: 1984-06-17
Abstract
No abstract record available.
Inventors
- 👤 Earl D Stuhldreher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:56
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/12; B; B21; B21D; B21D37/00; B21D37/04; B21J; B21J13/00; B21J13/02; B21J13/03; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/262; B30; B30B; B30B15/00; B30B15/02; B30B15/026; F16C29/02; F16C2322/00; F16C2322/39; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1633
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN RETAINING KEY ASSEMBLY THE COMBINATION COMPRISING, A BASE BLOCK HAVING A DOVETAIL SLOT WITH CONVERGING SIDE WALLS, A TOOL BLOCK HAVING A DOVETAIL SHANK WITH TAPERED SIDES ADAPTED TO MATINGLY ENGAGE A FIRST SIDE WALL OF SAID DOVETAIL SLOTS IN SAID BASE BLOCK, A RETAINING KEY HAVING LONGITUDINALLY CONVERGING SIDES, ONE SIDE OF SAID RETAINING KEY ADAPTED FOR MATING ENGAGEMENT WITH A TAPERED SIDE OF SAID TOOL BLOCK, THE SECOND SIDE OF SAID RETAINING KEY ADAPTED FOR MATING ENGAGEMENT WITH THE SECOND SIDE WALL OF SAID DOVETAIL SLOT IN SAID BASE BLOCK, AND HYDRAULIC ACTUATION MEANS WITHIN SAID RETAINING KEY CAUSING SAID RETAINING KEY TO SELECTIVELY WEDGINGLY LOCK SAID TOOL BLOCK WITHIN SAID BASE BLOCK.
Claim 2
Dependent Claim
116 words
IN RETAINING KEY ASSEMBLY THE COMBINATION COMPRISING, A BASE BLOCK HAVING A DOVETAIL SLOT WITH CONVERGING SIDE WALLS, A TOOL BLOCK HAVING A DOVETAIL SHANK WITH TAPERED SIDES ADAPTED TO MATINGLY ENGAGE A FIRST SIDE WALL OF SAID DOVETAIL SLOTS IN SAID BASE BLOCK, A RETAINING KEY HAVING LONGITUDINALLY CONVERGING SIDES, ONE SIDE OF SAID RETAINING KEY ADAPTED FOR MATING ENGAGEMENT WITH A TAPERED SIDE OF SAID TOOL BLOCK, THE SECOND SIDE OF SAID RETAINING KEY ADAPTED FOR MATING ENGAGEMENT WITH THE SECOND SIDE WALL OF SAID DOVETAIL SLOT IN SAID BASE BLOCK, AND HYDRAULIC ACTUATION MEANS WITHIN SAID RETAINING KEY CAUSING SAID RETAINING KEY TO SELECTIVELY WEDGINGLY LOCK SAID TOOL BLOCK WITHIN SAID BASE BLOCK.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |