Drive assembly for walking mowers
US4907401A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1989 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Jun 8, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A transmission casing (3) having a wheel axle (6) extending leftwards and rightwards therefrom is supported by a machine frame (1) rotatably about the axle for providing a main clutch (9) which is engaged and disengaged by a selective tightening and loosening of an input belt (8) for the transmission casing as a result of a selective rotational displacement of the casing. An auxiliary clutch (10) is disposed within the casing and between a speed-change mechanism (7) and the axle. These clutches (9, 10) are normally kept disengaged by individual spring means (12, 13). A rotatable clutch-control arm (11; 116) is provided which is operated by a clutch lever (14) so as to engage the auxiliary clutch (10). Upon completion of an engagement of this clutch, the control arm is engaged to a stop means (15) on the transmission casing such that further rotational displacement of this arm causes a rotational displacement of the casing towards a direction of engaging the main clutch (9). The main and auxiliary clutches co-operate to lighten a speed-change operation and mower-moving operation by an operator. The main clutch is simple in structure and both of the clutches are operated by a single …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.