Retractable boom stop
US5009566A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Oct 20, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/388
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A retractable boom stop includes a channel shaped stop member mounted for pivotal and rectilinear movement relative to the boom arm of a skid steer vehicle. The stop member is movable between an inoperative position adjacent the boom arm and an operative position interposed between the boom arm and lift cylinder. In the operative position the stop member prevents an extensible rod of the lift cylinder from retracting to lower the boom arm. The stop member is secured in the inoperative and operative positions by a retaining pin. A tension spring carried by the stop member and releasably securable to the boom arm automatically retracts the stop member out of the operative position to allow the lift cylinder to be retracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.