Patent US4304500A successfully refreshed from Google Patents.
US4304500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer for impact tool couplings
Assignee: Texaco Inc
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Filing: 1980-04-18
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Granted: 1981-12-08
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Expires: 2000-04-18
Abstract
Abstract A retainer especially for use with impact tools that have a drive shaft adapted to removably receive a tool socket. The socket and shaft have a diametric hole that is in alignment when the tool is attached in driving relationship to the shaft. The retainer has a pin that is adapted for extending through the hole, and there is an integral flexible ring with the pin situated diametrically across it and attached to it at one end.
Inventors
- 👤 Ashton J. Faulk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:11
CPC Classifications
B; B25; B25G; B25G3/00; B25G3/02; B25G3/12; B25G3/26; B25B; B25B23/00; B25B23/0007; B25B23/0035; F; F16; F16B; F16B21/00; F16B21/10; F16B21/12; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/598; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7083
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
Retainer for use with a removable drive shaft coupling for impact driven tools and the like, wherein said coupling includes non-circular cross section socket and shaft, one on each of said drive shaft and said tool, and a diametric hole through both said socket and said shaft to receive a pin to hold them in driving relationship against longitudinal disengagement, said retainer comprising a resilient material pin adapted for extending substantially all the way through said diametric hole, an elastic ring having a round cross sectional shape for being retained in a groove on said socket, said pin being integrally molded at one end into said ring and extending diametrically across thereof, and indicator means on said ring opposite and adjacent the other and free end of said pin for aiding in removal of said retainer.
Claim 2
Dependent Claim
136 words
Retainer for use with a removable drive shaft coupling for impact driven tools and the like, wherein said coupling includes non-circular cross section socket and shaft, one on each of said drive shaft and said tool, and a diametric hole through both said socket and said shaft to receive a pin to hold them in driving relationship against longitudinal disengagement, said retainer comprising a resilient material pin adapted for extending substantially all the way through said diametric hole, an elastic ring having a round cross sectional shape for being retained in a groove on said socket, said pin being integrally molded at one end into said ring and extending diametrically across thereof, and indicator means on said ring opposite and adjacent the other and free end of said pin for aiding in removal of said retainer.
Claim 3
Dependent Claim
14 words
Retainer according to claim 1, wherein said pin and ring are constructed of neoprene.
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) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |