Operation breaking apparatus for construction equipment
US5664637A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2004
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An operation prohibiting apparatus for construction equipment of improved controllability. A cutoff bar is positioned is a first position in which the cutoff bar protrudes across the entryway to an operator cab of the construction equipment. The cutoff bar is operationally linked with a locking mechanism for a hydraulic valve system of the construction equipment so that an operating mechanism for the system is unlocked when the cutoff bar is positioned in the first protruding position. A displacement enlarging mechanism is provided between an operating knob and the cutoff bar to facilitate manual positioning of the cutoff bar. Further, the cutoff bar is provided with flexibility to prevent possible damage to the cutoff bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.