USRE28662E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-change chuck with adjustable tool-holding socket
Assignee: —
•
Filing: 1972-06-14
•
Granted: 1975-12-23
•
Expires: 1992-06-14
Abstract
Abstract A quick-change chuck with a hollow cylindrical shank and a toolholding socket which is inserted into the shank and adapted to be very accurately adjusted by very simple means to different positions in the axial direction relative to the shank.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1071; B23B31/028; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17188; Y10T279/17196; Y10T279/17666; Y10T279/17692; Y10T279/17743; Y10T279/17752; Y10T279/17761; Y10T279/17811; Y10T279/17991
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A quick-change chuck comprising a cylindrical shank having a tubular wall, a tool socket axially slidable within said shank and adapted to receive a tool, an adjusting nut adapted to be screwed upon the front end of said socket for shifting said socket in its axial direction relative to said shank, said nut having a cylindrical neck portion and a peripheral groove within said neck portion, said groove having outwardly inclined flanks, a plurality of locking balls movable substantially radially into and out of said groove, and a spring-biased control sleeve guiding the radial motion of said balls, and further comprising a guide sleeve fitted over said shank and, in turn, surrounded by said control sleeve, said guide sleeve having on its front end, an annular neck, of a smaller diameter, forming an inner shoulder adapted to abut against the front end of said shank, wherein said balls are disposed.
Claim 2
Dependent Claim
150 words
A quick-change chuck comprising a cylindrical shank having a tubular wall, a tool socket axially slidable within said shank and adapted to receive a tool, an adjusting nut adapted to be screwed upon the front end of said socket for shifting said socket in its axial direction relative to said shank, said nut having a cylindrical neck portion and a peripheral groove within said neck portion, said groove having outwardly inclined flanks, a plurality of locking balls movable substantially radially into and out of said groove, and a spring-biased control sleeve guiding the radial motion of said balls, and further comprising a guide sleeve fitted over said shank and, in turn, surrounded by said control sleeve, said guide sleeve having on its front end, an annular neck, of a smaller diameter, forming an inner shoulder adapted to abut against the front end of said shank, wherein said balls are disposed.
Claim 3
Dependent Claim
80 words
A quick-change chuck as defined in claim 1, wherein said neck of said guide sleeve has a plurality of transverse bores therein, each adapted to hold and guide one of said locking balls, said neck portion of said adjusting nut being rotatable within said neck and being slidable into and out of said neck when said locking balls are removed from said groove, and means for securing said guide sleeve in said abutting position of said shoulder to said shank.
Claim 4
Dependent Claim
71 words
A quick-change chuck as defined in claim 2, wherein said shank has a tapped bore and said guide sleeve has a bore in alignment with said tapped bore when said shoulder on said guide sleeve abuts against the front end of said shank, said securing means comprising a setscrew inserted into said bore in said guide sleeve and screwed into said tapped bore for locking said guide sleeve to said shank.
Claim 5
Dependent Claim
77 words
A quick-change chuck as defined in claim 2, wherein said control sleeve has an inwardly projecting annular flange on its front end having a conical inner contact surface tapering forwardly and surrounding said neck of said guide sleeve containing said bores with said locking balls therein, and spring means acting upon said control sleeve and tending to move the same toward the rear to a position in which said contact surface presses said balls into said groove.
Claim 6
Dependent Claim
51 words
A quick-change chuck as defined in claim 4, wherein said control sleeve is shifted forwardly against the action of said spring means, an annular chamber is formed between said guide sleeve and its annular neck, said chamber being adapted to receive said locking balls when said control sleeve is shifted forwardly.
Claim 7
Dependent Claim
75 words
A quick-change chuck as defined in claim 4, further comprising a stop ring secured to the inner wall of said control sleeve near the rear end thereof, said control sleeve having a greater length than said guide sleeve and projecting beyond the rear end of the latter, said spring means comprising a compression spring having one end pressing against said stop ring and another end pressing against the rear end surface of said guide sleeve.
Claim 8
Dependent Claim
89 words
A quick-change chuck as defined in claim 2, wherein said control sleeve has an inwardly projecting annular flaNge on its front end surrounding said neck of said guide sleeve and having a conical surface increasing in diameter toward the front and terminating into an annular groove having a rounded bottom for receiving said locking balls when said control sleeve is retracted, and spring means acting upon said control means and tending to shift the same forwardly so that said conical surface will press said locking balls into said groove.
Claim 9
Dependent Claim
59 words
A quick-change chuck as defined in claim 7, wherein an annular chamber is formed between said flange on said control sleeve and an outer shoulder formed between said guide sleeve and its annular neck, said spring means comprising a compression spring within said chamber and having one end pressing against said flange and another end pressing against said neck.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |