Patent US4885950A successfully refreshed from Google Patents.
US4885950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bevel gear backlash and clutch device
Assignee: United States Department of the Army
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Filing: 1989-03-20
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Granted: 1989-12-12
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Expires: 2009-03-20
Abstract
Abstract An antibacklash beveled gear drive is disclosed. The drive is constructed adjust for intial misalignment and subsequent wear. One of the gears is journaled on a driven shaft and has a biasing means which bump the gears into engagement.
Inventors
- 👤 Roger Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:57
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/12; F16H57/02; F16H57/021; F16H57/022; F16H2057/0221; F16H2057/126; F16H2057/127; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19623; Y10T74/19642; Y10T74/1966; Y10T74/19665; Y10T74/19688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
An antibacklash beveled gear set comprising: a first drive shaft having a first beveled gear mounted thereon, the first shaft being connected to a source of power; a second shaft having a second beveled gear adapted to mesh with and be driven by the first gear, the second gear being journaled on the second shaft, so it rotates and has limited lateral movement, a plurality of Belleville springs arranged so that juxtaposed springs form a base to base, top to top contact, the Belleville springs being coaxially aligned about the second shaft with the end of the spring stack in contact with the driven bevel gear; and an adjustable stop mounted on the second shaft at the end of the Belleville spring stack opposite the second bevel gear, the stop being adjustable longitudinally but adapted to rotate in response to rotational forces transmitted through the Belleville springs causing rotation of the second shaft.
Claim 2
Dependent Claim
153 words
An antibacklash beveled gear set comprising: a first drive shaft having a first beveled gear mounted thereon, the first shaft being connected to a source of power; a second shaft having a second beveled gear adapted to mesh with and be driven by the first gear, the second gear being journaled on the second shaft, so it rotates and has limited lateral movement, a plurality of Belleville springs arranged so that juxtaposed springs form a base to base, top to top contact, the Belleville springs being coaxially aligned about the second shaft with the end of the spring stack in contact with the driven bevel gear; and an adjustable stop mounted on the second shaft at the end of the Belleville spring stack opposite the second bevel gear, the stop being adjustable longitudinally but adapted to rotate in response to rotational forces transmitted through the Belleville springs causing rotation of the second shaft.
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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |