Vibrating tamper having a single control lever
US6419420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention is directed to a vibrating tamper having a single control lever. The single control lever (4) can be set by an operator to any one of three releasably fixed positions with a snap-action detent device holding the control lever in the position selected by the operator. In the first position, the engine ignition is short-circuited, a fuel valve is closed, a fuel tank venting valve is closed and the throttle is fully closed. In the second position, the engine ignition circuit is enabled, the fuel tank venting valve is open, the fuel valve is open and the throttle control is in a starting/idling position. In the third position, the engine ignition circuit is enabled, the fuel tank venting valve is open, the fuel valve is open and the throttle control is in full-throttle position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.