US3943796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear change mechanism
Assignee: Raleigh Industries Ltd
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Filing: 1974-05-22
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Granted: 1976-03-16
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Expires: 1994-05-22
Abstract
Abstract A pawl member is formed as an integral structure from a synthetic plastics material, the said member having a pawl tooth extending outwardly from a body part and including a tail for co-operation with an abutment to load the tooth into or out of engagement with a co-operating ratchet formation the member being so designed having regard to its intended context as to operate within the strain limit of the material concerned during normal usage.
Inventors
- 👤 Anthony William Hillyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:47
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/12; F16D41/24; F16D41/32; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2133; Y10T74/2136; Y10T74/2137; Y10T74/2138
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A pawl member comprising a pawl body including mounting means adapted for co-operation with a suitable seating for support relative to a ratchet formation for co-operation therewith, at least one pawl tooth extending outwardly from the body and a tail portion extending outwardly from the body for loading the pawl tooth in a predetermined position relative to a co-operating ratchet formation, the said pawl member being moulded as an integral structure from a synthetic plastics material of appropriate elasticity characteristics.
Claim 2
Dependent Claim
80 words
A pawl member comprising a pawl body including mounting means adapted for co-operation with a suitable seating for support relative to a ratchet formation for co-operation therewith, at least one pawl tooth extending outwardly from the body and a tail portion extending outwardly from the body for loading the pawl tooth in a predetermined position relative to a co-operating ratchet formation, the said pawl member being moulded as an integral structure from a synthetic plastics material of appropriate elasticity characteristics.
Claim 3
Dependent Claim
41 words
A pawl member as claimed in claim 1 wherein the tail portion is of limited resilient flexibility for the two-fold purpose of co-operating with an abutment to limit rotation of the pawl member and of loading the pawl tooth as aforesaid.
Claim 4
Dependent Claim
15 words
A pawl member as claimed in claim 1 wherein each pawl tooth is resiliently flexible.
Claim 5
Dependent Claim
28 words
A pawl member as claimed in claim 1 wherein the mounting means comprises a lug extending from the body part and defining a pivot axis for the structure.
Claim 6
Dependent Claim
11 words
A pawl member as claimed in claim 1 moulded from polyacetal.
Claim 7
Dependent Claim
86 words
A pawl and ratchet mechanism including a pawl member comprising a pawl body including mounting means adapted for co-operation with a suitable seating for support relative to the ratchet formation for co-operation therewith, at least one pawl tooth extending outwardly from the body and a tail portion extending outwardly from the body for loading the pawl tooth in a predetermined position relative to the co-operating ratchet formation, the said pawl member being moulded as an integral structure from a synthetic plastics material of appropriate elasticity characteristics.
Claim 8
Dependent Claim
86 words
A pawl and ratchet mechanism including a pawl member comprising a pawl body including mounting means adapted for co-operation with a suitable seating for support relative to the ratchet formation for co-operation therewith, at least one pawl tooth extending outwardly from the body and a tail portion extending outwardly from the body for loading the pawl tooth in a predetermined position relative to the co-operating ratchet formation, the said pawl member being moulded as an integral structure from a synthetic plastics material of appropriate elasticity characteristics.
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) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |