Snow thrower
US4325195A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Dec 1, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01H5/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A snow thrower having an impeller which has forward facing blades which extend a short distance inward from the periphery of the impeller is disclosed. The impeller blades are substantially rigid during operation, and the impeller cooperates with two side walls and a continuous rear wall which form the active impeller housing. The continuous rear wall has a first portion whose cross section is a circular arc and generally follows the periphery of the impeller mounted within it. The rear wall has a second portion which extends forward and upward to define a substantially planar snow guiding surface which, in normal operation, guides the snow forwardly and upwardly as it leaves the area of interaction with the impeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.