Patent US3237955A successfully refreshed from Google Patents.
US3237955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyless chuck
Assignee: Jacobs Vehicle Systems Inc
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Filing: 1964-01-03
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Granted: 1966-03-01
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Donald J Mccarthy
- 👤 Girard S Haviland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:24
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1207; B23B31/123; B23B31/1246; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17615; Y10T279/17641; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/94; Y10T408/95; Y10T408/953
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A ROTARY TOOL INCLUDING A STATIONARY CASING HAVING AN END FACE AT ITS FRONT END, A DRIVING SPINDLE ROTATABLY SUPPORTED IN THE CASING HAVING A SHORT END PROJECTING THROUGH THE FRONT END OF THE CASING, AND A CHUCK HAVING A SHAFT BODY MOUNTED FAST TO THE PROJECTING END OF THE SPINDLE AND HAVING A CHUCK JAW ACTUATING UNIT MANUALLY ROTATABE ON THE SHAFT BODY, LOCK ENGAGEABLE MEANS ON THE END FACE OF THE CASING, AND LOCKING MEANS RESTRAINED AGAINST RELATIVE ROTATION ON THE SHAFT BODY REARWARDLY OF
Claim 2
Dependent Claim
88 words
IN A ROTARY TOOL INCLUDING A STATIONARY CASING HAVING AN END FACE AT ITS FRONT END, A DRIVING SPINDLE ROTATABLY SUPPORTED IN THE CASING HAVING A SHORT END PROJECTING THROUGH THE FRONT END OF THE CASING, AND A CHUCK HAVING A SHAFT BODY MOUNTED FAST TO THE PROJECTING END OF THE SPINDLE AND HAVING A CHUCK JAW ACTUATING UNIT MANUALLY ROTATABE ON THE SHAFT BODY, LOCK ENGAGEABLE MEANS ON THE END FACE OF THE CASING, AND LOCKING MEANS RESTRAINED AGAINST RELATIVE ROTATION ON THE SHAFT BODY REARWARDLY OF
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |