Snowthrower having impeller assist propulsion
US6470602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H5/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved single-stage snow thrower including a wheeled frame assembly for supporting the snow thrower upon a ground surface and a driven impeller capable of being placed in ground contact to forwardly propel the snow thrower across the ground surface. A handle assembly including a user interface is further provided to permit the operator to selectively control the normal force associated with the driven impeller, and thus selectively control the propulsive drive force of the snow thrower. A bail control assembly may be provided upon the handle to permit the operator to selectively control a downward movement of the impeller to selectively control the degree of impeller ground contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.