Patent US3964141A successfully refreshed from Google Patents.
US3964141A
Expired / Lapsed
US
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Crimping gears and process
Assignee: Imperial Chemical Industries Ltd
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Filing: 1974-10-09
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Granted: 1976-06-22
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Expires: 1994-10-09
Abstract
Abstract Integral structure crimping gears having timing gear teeth and crimping gear teeth of the same outside diameter, the tooth thickness of the crimping teeth being less than the tooth thickness of the timing teeth at any given diameter of the structure.
Inventors
- 👤 Alan Keith Dunnell
- 👤 Thomas Cyril James Wade
- 👤 David Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:59
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
Crimping gears comprising two or more gears in meshing engagement, one or more of said gears being driven, characterized in that at least one of the said gears is an integral structure having timing gear teeth and crimping gear teeth of the same outside diameter, the tooth thickness of the crimping teeth being less than the tooth thickness of the timing teeth at any given diameter of the structure.
Claim 2
Dependent Claim
69 words
Crimping gears comprising two or more gears in meshing engagement, one or more of said gears being driven, characterized in that at least one of the said gears is an integral structure having timing gear teeth and crimping gear teeth of the same outside diameter, the tooth thickness of the crimping teeth being less than the tooth thickness of the timing teeth at any given diameter of the structure.
Claim 3
Dependent Claim
30 words
Crimping gears according to claim 1 characterized in that a straight-spur gear and an integral gear are in meshing engagement, the crimping teeth of said gears being of regular amplitude.
Claim 4
Dependent Claim
85 words
A process for crimping a yarn which comprises passing the yarn between two or more gears in meshing engagement, one or more of said gears being driven, characterized in that at least one of said gears is an integral structure having timing gear teeth and crimping gear teeth of the same outside diameter, the tooth thickness of the crimping teeth being less than the tooth thickness of the timing teeth at any given diameter of the structure, said crimping gear teeth being of regular amplitude.
Claim 5
Dependent Claim
85 words
A process for crimping a yarn which comprises passing the yarn between two or more gears in meshing engagement, one or more of said gears being driven, characterized in that at least one of said gears is an integral structure having timing gear teeth and crimping gear teeth of the same outside diameter, the tooth thickness of the crimping teeth being less than the tooth thickness of the timing teeth at any given diameter of the structure, said crimping gear teeth being of regular amplitude.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |