US3656333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical surface finishing tool
Assignee: Individual
•
Filing: 1970-05-21
•
Granted: 1972-04-18
•
Expires: 1990-05-21
Abstract
Abstract The tool of the burnishing type has a cage at the working end of a spindle containing tapered rollers that engage a diverging truncated conical head on the end of the spindle. The opposite end of the spindle has a driven end on which a nonrotatable pressure applying unit is disposed. In one form the unit is a cylinder having a piston therein which exerts pressure on the cage supporting tube and forces the truncated conical rollers downwardly over the conical head and thereby exerts a substantial outward force on the rollers during the burnishing operation. A spring unit may be substituted for the cylinder and piston to apply the force to the sleeve and rollers.
Inventors
- 👤 Clemens A Kruse Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:37
CPC Classifications
B; B24; B24B; B24B39/00; B24B39/02; B24B39/023; Y; Y10; Y10T; Y10T29/00; Y10T29/47
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
In a burnishing tool for producing a fine finish on the inner wall of a cylinder, a spindle having a truncated conical head, a sleeve on said spindle having a cage containing truncated conical rollers disposed in engagement with conical surfaces of said head, means for relatively moving the sleeve and spindle in one direction when the spindle is stationary or being driven in rotation for producing the expansion of the rollers and the application of substantial outward force thereto, and means for relatively moving said relatively movable means in the other direction when the spindle is stationary or when being driven in rotation for permitting the contraction of said rollers and the removal of pressure therefrom, said relatively movable means being relatively moved in one direction by a fluid and in the other direction by spring means.
Claim 2
Dependent Claim
138 words
In a burnishing tool for producing a fine finish on the inner wall of a cylinder, a spindle having a truncated conical head, a sleeve on said spindle having a cage containing truncated conical rollers disposed in engagement with conical surfaces of said head, means for relatively moving the sleeve and spindle in one direction when the spindle is stationary or being driven in rotation for producing the expansion of the rollers and the application of substantial outward force thereto, and means for relatively moving said relatively movable means in the other direction when the spindle is stationary or when being driven in rotation for permitting the contraction of said rollers and the removal of pressure therefrom, said relatively movable means being relatively moved in one direction by a fluid and in the other direction by spring means.
Claim 3
Dependent Claim
47 words
A burnishing tool as recited in claim 1, wherein said fluid actuates nonrotatable ram which applies relative movement between the sleeve and spindle when stationary or when rotating for producing substantial outward pressure on the rollers controlled by the pressure of the fluid delivered to the ram.
Claim 4
Dependent Claim
43 words
A burnishing tool as recited in claim 2, wherein said spring means moves the spindle and sleeve when stationary or when rotating to produce the relative movement between the spindle and the cage and the contraction of the rollers when retracting said ram.
Claim 5
Dependent Claim
43 words
A burnishing tool as recited in claim 1, wherein said spring means applies relative movement between the spindle and sleeve when stationary or when rotating for producing substantial outward pressure on the rollers controlled by the degree of expansion of said spring means.
Claim 6
Dependent Claim
46 words
A burnishing tool as recited in claim 4, wherein said fluid means moves the spindle and sleeve when stationary or wheN rotating to produce the relative movement in retraction between the spindle and the cage and the contraction of the rollers when compressing said spring means.
Claim 7
Dependent Claim
30 words
A burnishing tool as recited in claim 3, wherein a support is provided for the workpiece, and means for advancing and retracting said support and workpiece relative to said rollers.
Claim 8
Dependent Claim
140 words
In a burnishing tool for producing a fine finish on the inner wall of a cylinder, a spindle having a truncated conical head, a sleeve on said spindle having a cage containing truncated conical rollers disposed in engagement with conical surfaces of said head, means for relatively moving the sleeve and spindle in one direction when the spindle is stationary or when driven in rotation for producing the expansion of the rollers and the application of substantial outward force thereto, means for relatively moving said piston and sleeve in the other direction when the spindle is stationary or when driven in rotation for permitting the contraction of said rollers and the removal of pressure therefrom, an annular cylinder rotatably mounted on said spindle, and a washerlike piston in said cylinder for moving said cage to advance and retract said rollers.
Claim 9
Dependent Claim
140 words
In a burnishing tool for producing a fine finish on the inner wall of a cylinder, a spindle having a truncated conical head, a sleeve on said spindle having a cage containing truncated conical rollers disposed in engagement with conical surfaces of said head, means for relatively moving the sleeve and spindle in one direction when the spindle is stationary or when driven in rotation for producing the expansion of the rollers and the application of substantial outward force thereto, means for relatively moving said piston and sleeve in the other direction when the spindle is stationary or when driven in rotation for permitting the contraction of said rollers and the removal of pressure therefrom, an annular cylinder rotatably mounted on said spindle, and a washerlike piston in said cylinder for moving said cage to advance and retract said rollers.
Claim 10
Dependent Claim
28 words
A burnishing tool as recited in claim 7, wherein fluid pressure advances said piston, and spring means for retracting said piston when the fluid pressure is removed therefrom.
References Cited (Backward Citations)
US527155A
Cited
US1670268A
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US2219784A
Cited
US2413103A
Cited
US2817385A
Cited
DE1013606B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |