US4139064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tiller and belt guard mounting therefor
Assignee: Deere and Co
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Filing: 1978-02-21
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Granted: 1979-02-13
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Expires: 1998-02-21
Abstract
Abstract A walk-behind rotary tiller includes an engine having an output shaft on which is mounted a first pulley. A second pulley is mounted on a countershaft and connected to be driven from the first pulley by a drive belt. The engine is mounted for adjustment toward and away from the counter shaft to compensate for belt stretch and to facilitate belt replacement. A guard encloses the belt and has its forward end pivotally supported on a bracket fixed to the engine by a fastener which also serves to retain a belt guide in place. The rear end of the belt guard is supported for swinging about the forward connection, when the motor is adjusted, by a bent rod having one end pivotally received in the guard and a parallel, axially offset second end serving to pivotally connect a bracket, having a drag stake and wheel assembly fixed thereto, for movement between raised and lowered positions for respectively disposing the drag stake and wheel assembly in transport and working positions.
Inventors
- 👤 Dale R. Dobberpuhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:41
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/08; A01B33/082; B; B62; B62D; B62D51/00; B62D51/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
262 words
In a walk-behind rotary tiller including an engine including an output shaft having a first pulley mounted thereon; a counter shaft arranged parallel to the output shaft and having a second pulley mounted thereon, a generally horizontal, fore-and-aft extending main frame supporting said engine on a forward portion thereof and said counter shaft on a rearward portion thereof with the engine being releasably mounted for movement toward and away from the countershaft to adjust the center distance between the first and second pulleys, a drive belt trained about the first and second pulleys, a belt guard including a vertical wall located transversely outwardly of the first and second pulleys and the belt and a flange extending inwardly from the vertical wall and extending arcuately respectively forwardly of the first pulley and rearwardly of the second pulley and fore-and-aft above the belt, and a first fastener for vertically pivotally mounting a ground engaging member to the frame at a location below the counter shaft, an improved mounting for supporting the belt guard on the frame, comprising: a connection means pivotally connecting the forward end of the guard to the engine; and said first fastener being in the form of a bent rod having first and second parallel, transverse, axially misaligned end sections with the first end section being pivotally received in the ground engaging member and the frame and with the second end section being pivotally received in the belt guard whereby the belt guard will pivot at said connection means when the engine is adjusted toward or away from the counter shaft.
Claim 2
Dependent Claim
262 words
In a walk-behind rotary tiller including an engine including an output shaft having a first pulley mounted thereon; a counter shaft arranged parallel to the output shaft and having a second pulley mounted thereon, a generally horizontal, fore-and-aft extending main frame supporting said engine on a forward portion thereof and said counter shaft on a rearward portion thereof with the engine being releasably mounted for movement toward and away from the countershaft to adjust the center distance between the first and second pulleys, a drive belt trained about the first and second pulleys, a belt guard including a vertical wall located transversely outwardly of the first and second pulleys and the belt and a flange extending inwardly from the vertical wall and extending arcuately respectively forwardly of the first pulley and rearwardly of the second pulley and fore-and-aft above the belt, and a first fastener for vertically pivotally mounting a ground engaging member to the frame at a location below the counter shaft, an improved mounting for supporting the belt guard on the frame, comprising: a connection means pivotally connecting the forward end of the guard to the engine; and said first fastener being in the form of a bent rod having first and second parallel, transverse, axially misaligned end sections with the first end section being pivotally received in the ground engaging member and the frame and with the second end section being pivotally received in the belt guard whereby the belt guard will pivot at said connection means when the engine is adjusted toward or away from the counter shaft.
Claim 3
Dependent Claim
37 words
The walk-behind tiller defined in claim 1 wherein said connection means includes a bracket fixed to the engine by a second fastener; and a belt guide being held in place adjacent the engine by said second fastener.
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) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |