US3709062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt drive for plurality of single groove sheaves
Assignee: Hesston Corp
•
Filing: 1971-10-01
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Granted: 1973-01-09
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Expires: 1991-10-01
Abstract
Abstract A power transmission in which a plurality of single groove sheaves are driven unidirectionally by a single, continuous belt having but one arc of contact with each sheave respectively. Each of the driven sheaves and an adjacent idler pulley are essentially coplanar thereby presenting a compact transmission requiring minimal operating space. The configuration of the belt is such that there is no more than one-quarter turn in any one stretch of the belt. Structure is provided to preclude contact of those stretches of the belt which cross one another.
Inventors
- 👤 G Draege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:34
CPC Classifications
F; F16; F16H; F16H37/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
203 words
In a power transmission: a drive pulley; a pair of spaced mule mule guide adjacent the drive pulley; a plurality of spaced, single groove, unidirectional driven pulleys; an idler pulley adjacent and substantially coplanar with the driven pulleys; the axis of rotation of the drive pulley being angularly offset relative to the axes of rotation of the driven pulleys and the idler pulley; and a single continuous belt trained around said pulleys and having but a single arc of contact with each pulley respectively, said belt having a working side and a return side, said return side having a first stretch extending from one of the mule pulleys to and around the idler pulley, and a second stretch extending from the idler pulley to a first of said driven pulleys, said working side having a first stretch extending from the other of said mule pulleys to and around a second of said driven pulleys, a second stretch extending from the second driven pulley to and around a third of said driven pulleys, and a third stretch extending from he third driven pulley to and around said first driven pulley whereat it joins with said second stretch of the return side of the belt.
Claim 2
Dependent Claim
203 words
In a power transmission: a drive pulley; a pair of spaced mule mule guide adjacent the drive pulley; a plurality of spaced, single groove, unidirectional driven pulleys; an idler pulley adjacent and substantially coplanar with the driven pulleys; the axis of rotation of the drive pulley being angularly offset relative to the axes of rotation of the driven pulleys and the idler pulley; and a single continuous belt trained around said pulleys and having but a single arc of contact with each pulley respectively, said belt having a working side and a return side, said return side having a first stretch extending from one of the mule pulleys to and around the idler pulley, and a second stretch extending from the idler pulley to a first of said driven pulleys, said working side having a first stretch extending from the other of said mule pulleys to and around a second of said driven pulleys, a second stretch extending from the second driven pulley to and around a third of said driven pulleys, and a third stretch extending from he third driven pulley to and around said first driven pulley whereat it joins with said second stretch of the return side of the belt.
Claim 3
Dependent Claim
28 words
In a power transmission as claimed in claim 1; and resilient means coupled with said idler pulley for yieldably maintaining said return side of the belt under tension.
Claim 4
Dependent Claim
32 words
In a power transmission as claimed in claim 1, wherein said driven pulleys are arranged in a triangular pattern and said idler pulley is located between the first and second driven pulleys.
Claim 5
Dependent Claim
21 words
In a power transmission as claimed in claim 1, wherein said third stretch crosses said first stretches in spaced relationship thereto.
Claim 6
Dependent Claim
26 words
In a power transmission as claimed in claim 4; and structure precluding contact of said third stretch with said first stretches at the zone of crossing.
Claim 7
Dependent Claim
53 words
In a power transmission as claimed in claim 5, wherein said third stretch is normally in an essentially horizontal position and passes over said first stretches, said structure being disposed to limit the extent of sag and downward whip of the third stretch and the extent of upward whip of the first stretches.
Claim 8
Dependent Claim
74 words
In a power transmission as claimed in claim 4; and a U-shaped structure bridged over said first stretches and provided with a bight having an upwardly facing guide channel for said third stretch to preclude contact of the latter with said first stretches at the zone of crossing, the mule pulleys being on one side of said structure, said second driven pulley and the idler pulley being on the opposite side of said structure.
Claim 9
Dependent Claim
19 words
In a power transmission as claimed in claim 1, wherein said first stretches are provided with a quarter turn.
References Cited (Backward Citations)
US1302222A
Cited
US2872831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |