US3604295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cutting laminated strip material
Assignee: Federal Mogul Shoreham Ltd
•
Filing: 1970-02-02
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Granted: 1971-09-14
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Expires: 1990-02-02
Abstract
Abstract A method of cutting laminated strip material of the type having a hard backing with a soft layer bonded to the backing comprising cutting through the soft layer to the interface with the backing and then shearing through the backing along a line extending to one side of one of the faces formed on the soft layer by the first cutting operation so that the bond between the part of the soft layer on which said one face is formed and the backing is not damaged by the second cutting operation.
Inventors
- 👤 Martin Ronald Newton Clark
- 👤 Joseph Henry Hill
- 👤 Herbert Ernest Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:29
CPC Classifications
B; B23; B23D; B23D19/00; B23D19/04; B23D19/06; B21; B21D; B21D28/00; B26; B26D; B26D7/00; B26D7/08; B26D7/084; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/04; Y10T83/0524; Y10T83/0538; Y10T83/808; Y10T83/825
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A method of cutting a laminated strip material of the type defined hereinbefore comprising a first cutting operation in which a cut is made through the soft layer of the material up to its interface with the harder layer and a second cutting operation in which a cut is made through the harder layer, the second cut being made along a line spaced sufficiently from one of the faces formed by the first cutting operation on the relatively soft layer so that distortion of the harder layer caused by the second cutting operation does not extend to the bond between the part of the relatively soft layer having said one face and the harder layer.
Claim 2
Independent Claim
115 words
A method of cutting a laminated strip material of the type defined hereinbefore comprising a first cutting operation in which a cut is made through the soft layer of the material up to its interface with the harder layer and a second cutting operation in which a cut is made through the harder layer, the second cut being made along a line spaced sufficiently from one of the faces formed by the first cutting operation on the relatively soft layer so that distortion of the harder layer caused by the second cutting operation does not extend to the bond between the part of the relatively soft layer having said one face and the harder layer.
Claim 3
Dependent Claim
92 words
A method as claimed in claim 1 wherein the first cutting operation comprises cutting a groove in the softer layer having a face extending normally to the surface of the strip and a face extending obliquely to the surface of the strip and the second cutting operation is spaced sufficiently from the normally extending face so that distortion of the harder layer by the second cutting operation does not extend to the bond between the part of the soft layer having said normal face and the adjacent part of the hard layer.
Claim 4
Dependent Claim
16 words
A method as claimed in claim 1 wherein the second cutting operation is a shearing operation.
Claim 5
Dependent Claim
92 words
A method as claimed in claim 1 wherein the strip is required to be cut simultaneously at two adjacent locations wherein the first cutting operations in the softer layer of material are carried out simultaneously and the second cutting operations in the harder layer are also carried out simultaneously at locations between the cuts formed by the first cutting operation so that the bonds between the soft layers and harder layers of the ends of the strip on either side of the part removed by the two cutting operations are not damaged.
References Cited (Backward Citations)
US2141121A
Cited
US3237494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |