US3636792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hertzian stress-reducing means for gears
Assignee: Individual
•
Filing: 1969-09-05
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Granted: 1972-01-25
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Expires: 1989-09-05
Abstract
Abstract Reduction in Hertzian and bending stresses in gears and in bearing assemblies is achieved by new configurations of gears and bearing assemblies employing combinations of materials in selected areas of the gears or bearing assemblies or cutting narrow slots into selected areas of the gear teeth or bearing assemblies. The increase in life of the gear or bearing assembly is expressed as L1 cH/H1n. For gears n 6.5 for bearings n 9. The Hertzian stress reduction provides in addition to increased operating life, higher reliability, higher load-carrying capacity and gears or bearings of quieter running characteristics at higher rotational rates than gears and bearings in the prior art.
Inventors
- 👤 Zoltan Vigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/14; F16H55/16; F16F; F16F15/00; F16F15/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633; Y10T74/19949; Y10T74/19963; Y10T74/19967
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
49 words
In mechanical assemblies such as gears and bearings, means for reducing the Hertzian stresses thereon comprising: slots cut into said assemblies having cross sections on the order of 0.00025 inch to 0.001 inch in predetermined configurations, said slots being filled with an elastomeric material to protect them from contamination.
Claim 2
Dependent Claim
49 words
In mechanical assemblies such as gears and bearings, means for reducing the Hertzian stresses thereon comprising: slots cut into said assemblies having cross sections on the order of 0.00025 inch to 0.001 inch in predetermined configurations, said slots being filled with an elastomeric material to protect them from contamination.
Claim 3
Dependent Claim
15 words
The slots defined in claim 1 being cut into said assemblies from opposite sides thereof.
Claim 4
Dependent Claim
18 words
The slots defined in claim 1 being cut into said assemblies in the form of an inverted ''''V.''''
Claim 5
Dependent Claim
18 words
The slots defined in claim 1 being cut into said assemblies in the form of an inverted ''''Y.''''
Claim 6
Dependent Claim
12 words
The slots defined in claim 1 being cut into said assemblies vertically.
Claim 7
Dependent Claim
53 words
In a gear, a gear tooth having slots cut into said tooth, said slots having a cross section of between 0.00025 and 0.001 inch and being filled with an elastomeric material to prevent contamination of said slot, whereby said gear tooth operates with reduced Hertzian stress and has increased wear and life expectancy.
Claim 8
Dependent Claim
53 words
In a gear, a gear tooth having slots cut into said tooth, said slots having a cross section of between 0.00025 and 0.001 inch and being filled with an elastomeric material to prevent contamination of said slot, whereby said gear tooth operates with reduced Hertzian stress and has increased wear and life expectancy.
Claim 9
Dependent Claim
21 words
In the gear tooth defined in claim 6 the configuration of said slot being in the form of an inverted ''''V.''''
Claim 10
Dependent Claim
21 words
In the gear tooth defined in claim 6 the configuration of said slot beiNg in the form of an inverted ''''Y.''''
Claim 11
Dependent Claim
15 words
The gear tooth defined in claim 7 including a slot vertically cut into the tooth.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |