US3602058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gears having deformable and indeformable teeth
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1969-11-21
•
Granted: 1971-08-31
•
Expires: 1989-11-21
Abstract
Abstract Composite gearing wherein the load is transferred via hard teeth only when it exceeds a certain level. This is achieved by employing a first set of deformable teeth disposed slightly in advance of the hard teeth.
Inventors
- 👤 Brian Beddoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:28
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/20; F; F16; F16H; F16H55/00; F16H55/02; F16H55/17; F16H55/18; F16H2055/185; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19949; Y10T74/19963; Y10T74/19967
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
Composite gearing comprising gears adopted for rotation on a common axis or shaft with their sets of teeth arranged side by side, at least one set of teeth being relatively indeformable rigid teeth material and at least one other set of teeth being relatively deformable displaceable teeth which latter teeth are so arranged that load-bearing faces of same project forwardly of load-bearing faces of the relatively indeformable teeth to an extent such that the teeth of a meshing gear will first contact said forwardly projecting faces which faces may thereafter yield under pressure to an extent such as to permit the teeth of the meshing gear also to move into driving contact with the faces of the relatively indeformable teeth.
Claim 2
Dependent Claim
120 words
Composite gearing comprising gears adopted for rotation on a common axis or shaft with their sets of teeth arranged side by side, at least one set of teeth being relatively indeformable rigid teeth material and at least one other set of teeth being relatively deformable displaceable teeth which latter teeth are so arranged that load-bearing faces of same project forwardly of load-bearing faces of the relatively indeformable teeth to an extent such that the teeth of a meshing gear will first contact said forwardly projecting faces which faces may thereafter yield under pressure to an extent such as to permit the teeth of the meshing gear also to move into driving contact with the faces of the relatively indeformable teeth.
Claim 3
Dependent Claim
17 words
Composite gearing as claimed in claim 1 wherein the relatively indeformable rigid teeth are made of metal.
Claim 4
Dependent Claim
17 words
Composite gearing as claimed in claim 1 wherein the relatively indeformable rigid teeth comprise hard synthetic material.
Claim 5
Dependent Claim
20 words
Composite gearing as claimed in claim 1 wherein the relatively indeformable rigid teeth comprise both metal and hard synthetic material.
Claim 6
Dependent Claim
17 words
Composite gearing as claimed in claim 1 wherein the relatively deformable displaceable teeth are made of polyurethane.
Claim 7
Dependent Claim
14 words
Composite gearing as claimed in claim 1 wherein the relatively deformable teeth comprise polyurethane.
Claim 8
Dependent Claim
26 words
Composite gearing as claimed in claim 1 wherein the whole of the gear of which said teeth form a part is made of the same material.
Claim 9
Dependent Claim
51 words
Composite gearing as claimed in claim 1 wherein the relatively deformable displaceable teeth form part of an annular covering, which covering forms a projection of an inner annulus the composition of which covering is different from that of the inner annulus of the gear of which said teeth form a part.
Claim 10
Dependent Claim
25 words
Composite gearing as claimed in claim 8 wherein said annular covering has a radial thickness of at least twice the depth of its outer teeth.
Claim 11
Dependent Claim
25 words
Composite gearing as claimed in claim 8 wherein said annular covering has a radial thickness of at least thrice the depth of its outer teeth.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |