US3851537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear drive reversing mechanism
Assignee: General Electric Co
•
Filing: 1974-02-19
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Granted: 1974-12-03
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Expires: 1994-02-19
Abstract
Abstract A gear drive reversing mechanism is disclosed for driving two output shafts in mutually opposite rotary directions by means of a drive shaft rotating in a constant direction. The mechanisms include spiral angle face gears driven by pinions having both right-hand and left-hand spiral angle pinion gear teeth.
Inventors
- 👤 G Nickstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:37
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/02; F16H1/20; F16H1/22; F16H1/222; F16H3/00; F16H3/02; F16H3/06; F16H55/00; F16H55/02; F16H55/22; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19605; Y10T74/19949; Y10T74/19953
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
A gear drive reveRsing mechanism comprising a first shaft mounted for rotation about a first shaft axis; a first face gear mounted to said first shaft and having right-hand spiral angle face gear teeth; a second shaft mounted for rotation about a second shaft axis; a second face gear mounted to said second shaft and having left-hand spiral angle face gear teeth; and a rotatably mounted pinion having right-hand spiral angle pinion gear teeth in mesh with said right-hand spiral angle face gear teeth and having left-hand spiral angle pinion gear teeth in mesh with said left-hand spiral angle face gear teeth; whereby rotation of said pinion in a constant rotary direction drives said first and second shafts in mutually opposite rotary directions.
Claim 2
Dependent Claim
123 words
A gear drive reveRsing mechanism comprising a first shaft mounted for rotation about a first shaft axis; a first face gear mounted to said first shaft and having right-hand spiral angle face gear teeth; a second shaft mounted for rotation about a second shaft axis; a second face gear mounted to said second shaft and having left-hand spiral angle face gear teeth; and a rotatably mounted pinion having right-hand spiral angle pinion gear teeth in mesh with said right-hand spiral angle face gear teeth and having left-hand spiral angle pinion gear teeth in mesh with said left-hand spiral angle face gear teeth; whereby rotation of said pinion in a constant rotary direction drives said first and second shafts in mutually opposite rotary directions.
Claim 3
Dependent Claim
20 words
A gear drive reversing mechanism in accordance with claim 1 wherein said first and second shaft axes are substantially coextensive.
Claim 4
Dependent Claim
26 words
A gear drive reversing mechanism in accordance with claim 2 wherein said right-hand and left-hand spiral angle pinion gear teeth are longitudinally coextensive along said pinion.
Claim 5
Dependent Claim
31 words
A gear drive reversing mechanism in accordance with claim 2 wherein said first and second shaft axes transverse the axis of rotation of said pinion at substantially a right angle therewith.
References Cited (Backward Citations)
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US1947853A
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US2190856A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |