Lift system for front-mounted implements for lawn and garden tractors
US4825570A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D49/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A front-mounted snowblower is pivotally attached to a midmount location at the underside of a tractor frame by a pair of lift arms that extend between the tractor front wheel. A rockshaft is pivotally attached to the snowblower at a location forwardly of the tractor and is linked to brackets carried by the tractor axle. The rockshaft includes a transversely offset arm to which the forward end of a lift link is coupled, the rear end of the lift link being coupled to a lift handle located beside the tractor operator station and secured to the outer end of a support bracket fixed to rear end portions of the lift arms. The mounting of the handle to the bracket releases the handle from the bracket upon the handle being swung forwardly beyond a normal working range thereby permitting the implement lift arms to be moved between the tractor front wheels during attachment and detachment operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.