US3625530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collet actuating device
Assignee: Hardinge Inc
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Filing: 1969-10-13
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Granted: 1971-12-07
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Expires: 1989-10-13
Abstract
Abstract A collet actuating device including two concentrically arranged tubular members one of which is movable axially and annularly relative to the other; a Belleville spring connected to both of the tubular members for exerting pressure axially on each of the tubular members and in opposite directions for actuating a collet; a piston connected to one end of the Belleville spring for relieving pressure exerted by the spring on one of the tubular members; and a locking means for arresting movement of the tubular members annularly relative to each other.
Inventors
- 👤 Hubert J Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:49
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/207; B23B31/2073; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1241; Y10T279/1249; Y10T279/1258; Y10T279/17; Y10T279/17411; Y10T279/17529; Y10T279/17547; Y10T409/00; Y10T409/30; Y10T409/309352; Y10T409/309408; Y10T409/309464
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A collet actuating device comprising: a. concentrically arranged tubular members one of which is movable axially and annularly relative to the other, b. means connected to both of said tubular members for moving one of said tubular members axially relative to the other and including spring means for exerting pressure axially on each of said tubular members and in opposite directions for moving a collet, c. piston and cylinder means connected to said moving means for relieving the pressure exerted by said spring meanS, d. bearing means for mounting said piston means about one of said tubular members, e. means for limiting the travel of said spring means to a first predetermined distance between compressed and relaxed positions, f. fluid pressure means for moving said piston means, g. means for limiting the travel of said piston means to a second predetermined distance, h. said first predetermined distance being greater than said second predetermined distance, thereby limiting the pressure exerted against said bearing means.
Claim 2
Dependent Claim
163 words
A collet actuating device comprising: a. concentrically arranged tubular members one of which is movable axially and annularly relative to the other, b. means connected to both of said tubular members for moving one of said tubular members axially relative to the other and including spring means for exerting pressure axially on each of said tubular members and in opposite directions for moving a collet, c. piston and cylinder means connected to said moving means for relieving the pressure exerted by said spring meanS, d. bearing means for mounting said piston means about one of said tubular members, e. means for limiting the travel of said spring means to a first predetermined distance between compressed and relaxed positions, f. fluid pressure means for moving said piston means, g. means for limiting the travel of said piston means to a second predetermined distance, h. said first predetermined distance being greater than said second predetermined distance, thereby limiting the pressure exerted against said bearing means.
Claim 3
Dependent Claim
19 words
A collet actuating device as described in claim 1 and wherein: a. said spring means comprises a Belleville spring.
Claim 4
Dependent Claim
24 words
A collet actuating device as described in claim 2 and including: a. a plurality of said Belleville springs in opposed relationship to each other.
Claim 5
Dependent Claim
38 words
A collet actuating device as described in claim 3 and wherein: a. each of said Belleville springs exerting pressure in a direction opposite to the other of said Belleville springs and axially on one of said tubular members.
Claim 6
Dependent Claim
94 words
A collet actuating device as described in claim 1 and including: a. a housing extending annularly about the axis of said tubular members; b. said housing including a locking part releasably locking said piston means to said housing for preventing said piston means from moving annularly relative to said housing; and c. said piston means including an axial slot in which said locking part fits when in a locking position for permitting said piston means to move axially relative to said housing while preventing said piston means from moving annularly relative to said housing.
Claim 7
Dependent Claim
152 words
A collet actuating device as described in claim 1 and including: a. said bearing means is positioned between said piston means and said spring means; and b. an annular member extending about one of said tubular members; c. a part of said annular member positioned between said bearing means and said spring means; and d. said annular member including a locking part releaseably locking said one of said tubular members to said annular member for preventing movement of said one of said tubular members relative to said annular member whereupon pressure exerted by said spring means upon said tubular members to move said one of said tubular members axially relative to the other is relieved when fluid under pressure is forced into said cylinder means between a wall of said cylinder means and said piston means causing said piston means to move axially towards said spring means and compress said spring means.
Claim 8
Dependent Claim
65 words
A collet actuating device as described in claim 6 and including: a. spring means positioned in the wall of said cylinder means for exerting pressure on said piston means and in turn exerting pressure on said bearing means when said fluid under pressure has been evacuated from said cylinder means so that a constant minimum pressure is maintained on said bearing means at all times.
Claim 9
Dependent Claim
57 words
A collet actuating device as described in claim 1 and including: a. said bearing means abuts said piston means; and b. said piston means including a flange on its outer annular edge extending axially towards and annularly about an outer race of said bearing means for supporting said bearing means in a recess formed by said flange.
Claim 10
Dependent Claim
57 words
A collet actuating device as described in claim 1 and including: a. a housing enclosing said piston means and said cylinder means extending annularly about the axis of said tubular members; and b. said housing including a drain hole for fluid which may escape from said cylinder means when said fluid is acting upon said piston means.
Claim 11
Dependent Claim
70 words
A collet actuating device as described in claim 1 and including: a. second bearing means having inner and outer races located on the other side of said spring means from said piston means; b. a housing extending annularly about the axis of said tubular members enclosing said bearing means; and c. means for disassemblinG said bearing means, including drive holes in said housing and knockout plugs in said drive holes.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |