US3633398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making corrugated elastic shims
Assignee: MADELEINE AS SCIL AGENT LLC
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Filing: 1970-01-21
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Granted: 1972-01-11
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Expires: 1990-01-21
Abstract
Abstract Into a cylindrical bending chamber, free from rotating parts, a corrugated strip is fed tangentially between the interior wall of the bending chamber and a semicylindrical anvil whose curved side follows in spaced relation the opposite curved side of the bending chamber from that at which the stock enters. The end of the stock after making one and a half turns abuts against the radial straight side of the semicylindrical anvil. The stock is sheared generally radially by a shear blade acting against the corner of the semicylindrical anvil. Completed corrugated elastic shims are ejected axially. In the preferred embodiment the strip is gripped or engaged only at the edges.
Inventors
- 👤 Hans W Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:00
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/16; F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0829; F16D1/0835
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
165 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil, and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, the clearance between the anvil and the bending chamber along the path of the movable shear blade being just sufficient to allow one layer of corrugated strip to pass, the surface of the anvil acting as a stop for the end of the strip.
Claim 2
Dependent Claim
165 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil, and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, the clearance between the anvil and the bending chamber along the path of the movable shear blade being just sufficient to allow one layer of corrugated strip to pass, the surface of the anvil acting as a stop for the end of the strip.
Claim 3
Dependent Claim
20 words
Mechanism of claim 1, having feeding means which introduces one and one half turns of strip into the bending chamber.
Claim 4
Dependent Claim
137 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, in which the bending chamber has an annular recess to receive the corrugations of the strip.
Claim 5
Dependent Claim
137 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, in which the bending chamber has an annular recess to receive the corrugations of the strip.
Claim 6
Dependent Claim
135 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil, and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, in which the anvil has a recess to receive the corrugations of the strip.
Claim 7
Dependent Claim
135 words
In mechanism for bending corrugated strip to make a corrugated elastic shim, walls forming a curved internal bending chamber free from rotating parts, a tangential inlet passage to the bending chamber, an interior anvil in the bending chamber on the side opposite that which the strip first contacts on entering, spaced from the walls of the bending chamber and having a shear edge, a movable shear blade having a position at the outside of the bending chamber and movable generally radially inwardly along the shear edge of the anvil, and feed means for advancing corrugated strip into the tangential inlet passage so that the strip will bend into conformity with the interior of the cylindrical bending chamber around a circular path, in which the anvil has a recess to receive the corrugations of the strip.
Claim 8
Independent Claim
80 words
A method of bending corrugated strip in a cylindrical bendiNg chamber free from rotating parts having an anvil with clearance from the walls of the bending chamber, which comprises feeding corrugated strip tangentially into the bending chamber and between the anvil and the bending chamber wall until one end of the strip abuts against the anvil, bending the strip into a curved shape, shearing the strip generally radially against the anvil and removing the strip axially from the bending chamber.
Claim 9
Independent Claim
80 words
A method of bending corrugated strip in a cylindrical bendiNg chamber free from rotating parts having an anvil with clearance from the walls of the bending chamber, which comprises feeding corrugated strip tangentially into the bending chamber and between the anvil and the bending chamber wall until one end of the strip abuts against the anvil, bending the strip into a curved shape, shearing the strip generally radially against the anvil and removing the strip axially from the bending chamber.
Claim 10
Dependent Claim
49 words
A method of claim 5, which comprises feeding one and one half turns of corrugated strip into the bending chamber before shearing, removing one turn of the sheared strip by ejecting axially and retaining one half turn of strip in the bending chamber to form the next tolerance ring.
Claim 11
Dependent Claim
21 words
A method of claim 5, which comprises engaging the strip with the chamber wall only at the edges of the strip.
References Cited (Backward Citations)
US1675300A
Cited
US2855974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |