US3679219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated chuck
Assignee: Individual
•
Filing: 1970-02-20
•
Granted: 1972-07-25
•
Expires: 1990-02-20
Abstract
Abstract A sleeve actuated hydraulic chuck for accurately locating internal work pieces or tool elements for machining, grinding, gauging or other operations. The chuck is substantially symmetric for vibrationless operation at high speeds.
Inventors
- 👤 Gordon N Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:03
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/305; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1216
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A chuck comprising a rigid body, a bore hole extending axially inwardly from one end of said body, a deflectable slotted shell axially fixed in said bore hole having slots extending for a limited portion of length adapting said portion for radially inward deflection, rigid portions of said shell extending beyond said slots at either extremity thereof, each of said rigid portions being radially supported by said rigid body, a sleeve constructed of relatively more flexible material covering the slotted portions of said shell, means defining a sealed fluid chamber communicating with the outside of said sleeve, and, means for establishing hydraulic pressure in said chamber for actuating said sleeve and shell to a holding position, said last means including piston means concentric with said bore hole.
Claim 2
Dependent Claim
127 words
A chuck comprising a rigid body, a bore hole extending axially inwardly from one end of said body, a deflectable slotted shell axially fixed in said bore hole having slots extending for a limited portion of length adapting said portion for radially inward deflection, rigid portions of said shell extending beyond said slots at either extremity thereof, each of said rigid portions being radially supported by said rigid body, a sleeve constructed of relatively more flexible material covering the slotted portions of said shell, means defining a sealed fluid chamber communicating with the outside of said sleeve, and, means for establishing hydraulic pressure in said chamber for actuating said sleeve and shell to a holding position, said last means including piston means concentric with said bore hole.
Claim 3
Dependent Claim
26 words
A chuck according to claim 1 wherein said shell extends outwardly beyond the end of said body, and said actuating means being located on said shell.
Claim 4
Dependent Claim
22 words
A chuck according to claim 2 wherein said actuating means includes a rotatable threadeD member engaging a flange on said piston means.
Claim 5
Dependent Claim
33 words
A chuck according to claim 1 wherein said hydraulic pressure means includes a fluid reservoir concentric with said bore hole, communicating with said fluid chamber and said piston means extends into said reservoir.
Claim 6
Dependent Claim
19 words
A chuck according to claim 1 said actuating means being mounted on said body and engaging said piston means.
Claim 7
Dependent Claim
21 words
A chuck according to claim 5 said actuating means including a rotatable threaded member engaging a flange on said piston means.
Claim 8
Dependent Claim
20 words
A chuck according to claim 1 including means is said body engaging said shell to transmit torque to said shell.
Claim 9
Dependent Claim
29 words
A chuck according to claim 1 wherein substantially all elements of said chuck are symmetric with respect to said bore hole for balanced operation at relatively high rotative speeds.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |