US3761008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion arbor
Assignee: Detroit Sales Co
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Filing: 1971-10-21
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Granted: 1973-09-25
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Expires: 1991-10-21
Abstract
Abstract An arbor including a radially expandable and contractable collet carried by a pair of axially adjustable pressure applying members. The collet is formed with spaced, inclined end surfaces, each of which is formed with a series of scallops, or undulations having smoothly curved outwardly projecting lobes joined by smoothly curved, inwardly projecting troughs or recesses. Each of the pressure applying members has a pressure applying surface engaged with one of the end surfaces of the collet, and each of the pressure applying surfaces is complementally inclined with respect to the associated end surface of the collet, and is also formed with a series of complemental scallops, whereby movement of the pressure applying members toward each other applies radial pressure to the collet and secures the collet against rotation with respect to the pressure applying members.
Inventors
- 👤 R Goulder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:25
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; B23B31/4006; B23B31/4033; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1004; Y10T279/1008; Y10T279/1037; Y10T279/1041; Y10T279/17; Y10T279/17411; Y10T279/17418; Y10T279/17435; Y10T279/17478; Y10T279/34; Y10T279/3493
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An arbor comprising: pressure applying mEans; a radially expandable and contractable collet carried by said pressure applying means; said collet having at least one inclined end surface formed with a series of scallops; said pressure applying means having a pressure applying surface engageable with said end surface of said collet, said pressure applying surface being complementally inclined with respect to said end surface of said collet and being formed with a complemental series of scallops; and said pressure applying means being operable to cause said pressure applying surface of said pressure applying means to move axially with respect to said end surface of said collet and thereby apply radial pressure to said collet.
Claim 2
Dependent Claim
113 words
An arbor comprising: pressure applying mEans; a radially expandable and contractable collet carried by said pressure applying means; said collet having at least one inclined end surface formed with a series of scallops; said pressure applying means having a pressure applying surface engageable with said end surface of said collet, said pressure applying surface being complementally inclined with respect to said end surface of said collet and being formed with a complemental series of scallops; and said pressure applying means being operable to cause said pressure applying surface of said pressure applying means to move axially with respect to said end surface of said collet and thereby apply radial pressure to said collet.
Claim 3
Dependent Claim
41 words
A arbor as claimed in claim 1 wherein said pressure applying means comprises a pair of pressure applying members secured together for limited axial movement with respect to each other, said pressure applying surface being formed on one of said members.
Claim 4
Dependent Claim
50 words
An arbor as claimed in claim 2 wherein said members project concentrically through said collet and are movable axially toward each other to cause said pressure applying surface to expand said collet, and are movable axially away from each other to permit said collet to contract from the expanded condition.
Claim 5
Dependent Claim
50 words
An arbor as claimed in claim 3 further including a restrictor mounted on the other of said pressure applying members and receiving the end of said collet opposite said one end surface to confine a portion of said collet and limit expansion of said collet to the unconfined portion thereof.
Claim 6
Dependent Claim
107 words
An arbor comprising: a pair of pressure applying members secured together for axial movement with respect to each other; a radially expandable and contractable collet carried by said pressure applying members, said collet having a pair of spaced, inclined end surfaces each formed with a series of scallops; each of said pressure applying members having a pressure applying surface engaged with one of said end surfaces, each of said pressure applying surfaces being complementally inclined with respect to its associated end surface and being formed with a series of complemental scallops whereby movement of said pressure applying members toward each other applies radial pressure to said collet.
Claim 7
Dependent Claim
107 words
An arbor comprising: a pair of pressure applying members secured together for axial movement with respect to each other; a radially expandable and contractable collet carried by said pressure applying members, said collet having a pair of spaced, inclined end surfaces each formed with a series of scallops; each of said pressure applying members having a pressure applying surface engaged with one of said end surfaces, each of said pressure applying surfaces being complementally inclined with respect to its associated end surface and being formed with a series of complemental scallops whereby movement of said pressure applying members toward each other applies radial pressure to said collet.
Claim 8
Dependent Claim
33 words
An arbor as claimed in claim 5 wherein said end surfaces are formed internally on said collet such that movement of said pressure applying members toward each other causes expansion of said collet.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |