Patent US3332081A successfully refreshed from Google Patents.
Patent US3782740A successfully refreshed from Google Patents.
US3782740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centering chuck
Assignee: Individual
•
Filing: 1971-08-16
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Granted: 1974-01-01
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Expires: 1991-08-16
Abstract
Abstract Tool-carrying centering chuck in which two mobile sleeves along a tube are urged towards one another against a central sleeve by antagonistic or counter springs, the facing conical lateral surfaces of said sleeves being designed to receive bearing balls and to push them outwardly against the inner surface of a tube to be treated during a welding or circular machining operation without mounting on a lathe being necessary.
Inventors
- 👤 J Peyrot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/22; B23K; B23K37/00; B23K37/04; B23K37/053; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1083; Y10T279/1091; Y10T279/17; Y10T279/17128; Y10T279/17136; Y10T279/17145; Y10T279/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
Chuck arrangement for effecting centering relationship of various parts within a tubular part to be treated comprising a tubular lining with a first sleeve disposed therearound, second and third sleeves movably disposed around said tubular lining on opposite sides of said first sleeve, said first and second sleeves and said first and third sleeves having adjacent conical lateral faces between which are disposed at least two ball bearings, spring means urging said second and third sleeves toward one another and against said first sleeve and causing said lateral faces to push said ball bearings outwardly against surrounding inner wall portions of a tube to be treated.
Claim 2
Dependent Claim
106 words
Chuck arrangement for effecting centering relationship of various parts within a tubular part to be treated comprising a tubular lining with a first sleeve disposed therearound, second and third sleeves movably disposed around said tubular lining on opposite sides of said first sleeve, said first and second sleeves and said first and third sleeves having adjacent conical lateral faces between which are disposed at least two ball bearings, spring means urging said second and third sleeves toward one another and against said first sleeve and causing said lateral faces to push said ball bearings outwardly against surrounding inner wall portions of a tube to be treated.
Claim 3
Dependent Claim
36 words
The chuck arrangement according to claim 1 wherein the ball bearings are limited in their outward movement by locking rings disposed around said first, second and third sleeves and extending axially beyond said conical lateral faces.
Claim 4
Dependent Claim
62 words
The chuck arrangement according to claim 1 wherein a first end sleeve is disposed around a first end of said tubular lining and crimped thereto, said second and third sleeves are in sliding relationship toward and away from said first sleeve therebetween, and a second end sleeve is disposed around the other end of said tubular lining and keyed or locked thereto.
Claim 5
Dependent Claim
32 words
The chuck arrangement according to claim 3 wherein sliding protective rings are disposed around said first end sleeve and said second sleeve and around said second end sleeve and said third sleeve.
Claim 6
Dependent Claim
126 words
The chuck arrangement according to claim 4 wherein said second end sleeve and said tubular lining are detachably secured to a pin element disposed in said tubular lining by a generally U-shaped spring member with arm portions disposed in aligned orifice means of said second end sleeve and tubular lining and groove means of said pin element and said chuck may be detached from said pin element by rotary motion applied to two flats or bearings formed on said first end sleeve, for example, by application of a spanner which would rotate said second end sleeve and said tubular lining with respect to said pin element to spread and raise said arm portions of the spring member out of the groove means of said pin element.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |