Control for snowplow blade
US4353177A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05G2009/04744
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Control apparatus for a snowplow blade or the like, includes a control shaft movably mounted to a housing, so as to have first and second end portions extending respectively inwardly and outwardly of the housing. A control circuit is mounted in the housing and a plurality of momentary contact switches are electrically coupled with the control circuit and mounted in the housing for selective actuation by the control shaft end portion in the housing. A resilient member is in engagement with said control shaft end portion in the housing for resiliently returning the control shaft to a predetermined neutral position. The control circuit comprises solenoid control circuits for energizing a plurality of solenoids to effect movement of the snowplow blade. A first circuit portion is responsive to ones of the switches for energizing ones of the solenoids for respectively controlling the snowplow blade in left and right turning motions and in upward lifting motion. A second circuit portion is responsive to ones of the switches for energizing at least one of the solenoids for controlling downward motion of the snowplow blade. The second circuit portion also includes a timing circuit for effec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.