US3893677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick change spindle adapter for tool holder
Assignee: SMITH TRUSTEE LUCILLE G
•
Filing: 1973-12-26
•
Granted: 1975-07-08
•
Expires: 1993-12-26
Abstract
Abstract A quick change adapter for a power rotated spindle to removably receive a tool holder which includes a cylindrical body mounted on and projecting forwardly of the spindle. A forwardly retractable spring biased control sleeve with a tapered inner wall is movably mounted on said body. A tool holder is removably projected into said body and spindle. A collar on said tool holder is nested in said body and bears against said spindle. A series of spaced balls are nested in said body with portions of the balls extending radially outward operatively engaged by said sleeve tapered inner wall with inner portions of said balls retainingly engaging said collar. Retraction of said sleeve permits removal of said tool holder.
Inventors
- 👤 Theodore M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:26
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1071; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17666; Y10T279/17692; Y10T279/17743; Y10T279/17752; Y10T279/17761; Y10T279/17811
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
210 words
A quick change adapter for a power rotated spindle having a bore adapted to receive a tool holder; a cylindrical body having a uniform axial bore mounted upon and secured to said spindle and projecting forwardly thereof; a forwardly retractable spring biased sleeve movably mounted on said body and including a rearwardly and outwardly tapered inner wall; a tool holder mounting a tool projected into said body with a shank snugly nested in the spindle bore; and a collar of circular crossection on said tool holder intermediate its ends projected into said body and bearing against the end of said spindle; there being a series of spaced balls movably nested in said body in a single transverse plane; portions of said balls projected radially inward retainingly engaging said collar and projected radially outward for cooperative engagement with said tapered inner wall; the tapered inner wall of the sleeve converging relative to the collar surface providing a cooperating wedging action of the balls between the collar and the sleeve inner wall for anchoring said tool holder within said body and against the end of said spindle, whereby forward manual retraction of said sleeve releases said balls facilitating assembly to and manual removal of said tool holder from said body and spindle.
Claim 2
Dependent Claim
210 words
A quick change adapter for a power rotated spindle having a bore adapted to receive a tool holder; a cylindrical body having a uniform axial bore mounted upon and secured to said spindle and projecting forwardly thereof; a forwardly retractable spring biased sleeve movably mounted on said body and including a rearwardly and outwardly tapered inner wall; a tool holder mounting a tool projected into said body with a shank snugly nested in the spindle bore; and a collar of circular crossection on said tool holder intermediate its ends projected into said body and bearing against the end of said spindle; there being a series of spaced balls movably nested in said body in a single transverse plane; portions of said balls projected radially inward retainingly engaging said collar and projected radially outward for cooperative engagement with said tapered inner wall; the tapered inner wall of the sleeve converging relative to the collar surface providing a cooperating wedging action of the balls between the collar and the sleeve inner wall for anchoring said tool holder within said body and against the end of said spindle, whereby forward manual retraction of said sleeve releases said balls facilitating assembly to and manual removal of said tool holder from said body and spindle.
Claim 3
Dependent Claim
17 words
In the adapter of claim 1, the outer surface of said collar being tapered outwardly and rearwardly.
Claim 4
Dependent Claim
14 words
In the adapter of claim 1, the outer surface of said collar being cylindrical.
Claim 5
Dependent Claim
196 words
The combination with a power driven spindle having a bore, a cylindrical body of uniform bore throughout its length secured thereon and projecting forwardly thereof, a retractable spring biased sleeve having a tapered inner wall mounted on the body and laterally movable balls on said body in a single transverse plane operably engaged by said sleeve; of a tool holder projected into said body having a shank snugly nested in said spindle bore; a collar of circular crossection on said tool holder projected into said body and bearing against the end of said spindle; portions of said balls being projected radially inward retainingly engaging said collar, whereby forward manual retraction of said sleeve releases said balls facilitating assembly and manual removal of said tool holder; said collar including a body surrounding said tool holder, the exterior surface of said collar being tapered rearwardly and outwardly for cooperating retaining registry with said balls; the tapered inner wall of the sleeve converging relative to the collar surface providing a cooperating wedging action of the balls between the collar and the sleeve inner wall for anchoring said tool holder within said body and against the end of said spindle.
Claim 6
Dependent Claim
196 words
The combination with a power driven spindle having a bore, a cylindrical body of uniform bore throughout its length secured thereon and projecting forwardly thereof, a retractable spring biased sleeve having a tapered inner wall mounted on the body and laterally movable balls on said body in a single transverse plane operably engaged by said sleeve; of a tool holder projected into said body having a shank snugly nested in said spindle bore; a collar of circular crossection on said tool holder projected into said body and bearing against the end of said spindle; portions of said balls being projected radially inward retainingly engaging said collar, whereby forward manual retraction of said sleeve releases said balls facilitating assembly and manual removal of said tool holder; said collar including a body surrounding said tool holder, the exterior surface of said collar being tapered rearwardly and outwardly for cooperating retaining registry with said balls; the tapered inner wall of the sleeve converging relative to the collar surface providing a cooperating wedging action of the balls between the collar and the sleeve inner wall for anchoring said tool holder within said body and against the end of said spindle.
Claim 7
Dependent Claim
22 words
In the adapter of claim 1, said balls being interposed between the sleeve inner wall and the outer surface of said collar.
Claim 8
Dependent Claim
22 words
In the adapter of claim 1, said balls being interposed between the sleeve inner wall and the forward corner of said collar.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |