Patent US2165440A successfully refreshed from Google Patents.
Patent US3810642A successfully refreshed from Google Patents.
US3810642A
Expired / Lapsed
US
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Drill chucks
Assignee: Jacobs Chuck Technology Corp
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Filing: 1972-04-28
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Granted: 1974-05-14
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Expires: 1992-04-28
Abstract
Abstract A drill chuck having a body part and a cylindrical sleeve connected to the usual nut member engaging the jaws, the cylindrical sleeve extending rearwardly to engage a cylindrical portion of the body remote from the nut member.
Inventors
- 👤 G Derbyshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:26
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1207; B23B31/1238; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17615; Y10T279/17623; Y10T279/17632; Y10T279/35
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
A drill chuck comprising a body part; jaws slidably mounted for converging movement in respective guides in said body part; a nut member rotatably mounted on said body part but axially located in a circumferential groove encircling said body part, said nut member having screw-threaded engagement with said jaw members; a gear element with which an extraneous chuck key may be engaged for adjusting the jaws, said gear element being formed integrally with the nut member, the two being formed in halves so that the nut member can be located in the circumferential groove encircling the body part; and a generally cylindrical sleeve connected to said nut member and extending rearwardly of the body part to rotatably engage a cylindrical portion of the body part remote from said nut member, said sleeve being made as a pressing from light gauge metal plate and having a completely inturned edge at the end which tightly encircles at least a part of the gear element and which holds the two halves of the integrally formed nut member and gear element together.
Claim 2
Dependent Claim
178 words
A drill chuck comprising a body part; jaws slidably mounted for converging movement in respective guides in said body part; a nut member rotatably mounted on said body part but axially located in a circumferential groove encircling said body part, said nut member having screw-threaded engagement with said jaw members; a gear element with which an extraneous chuck key may be engaged for adjusting the jaws, said gear element being formed integrally with the nut member, the two being formed in halves so that the nut member can be located in the circumferential groove encircling the body part; and a generally cylindrical sleeve connected to said nut member and extending rearwardly of the body part to rotatably engage a cylindrical portion of the body part remote from said nut member, said sleeve being made as a pressing from light gauge metal plate and having a completely inturned edge at the end which tightly encircles at least a part of the gear element and which holds the two halves of the integrally formed nut member and gear element together.
Claim 3
Dependent Claim
34 words
A drill chuck according to claim 1, in which the generally cylindrical sleeve has been formed with a series of flutes which strengthen the wall of said sleeve and provide a convenient gripping surface.
Claim 4
Dependent Claim
57 words
A drill chuck according to claim 1, in which the generally cylindrical sleeve has been formed at its end remote from the integrally formed nut member and gear element with a completely inturned flange which extends concentrically within the generally cylindrical shape of the sleeve to form a bearing surface between the sleeve and the body part.
References Cited (Backward Citations)
GB1035672A
Cited
US3462164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |