Automatic lock for farm equipment transport wheel
US4534416A · kind A · utility
17Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1983 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B63/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Movement of a wing frame to folded position moves a locking member into position to be engaged by the arm which actuates the wheels to lowered position. When engaged, the lock prevents the wheels from being raised. To disengage the lock the wing must be unfolded first to enable the locking lever to rise out of the way when the arm is actuated to disengage the lock. The entire operation is controlled hydraulically and the farmer need not get off his tractor to lock or unlock the rig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.