The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1995
Filed:
Feb. 02, 1990
Randall A Beihoffer, Bloomington, MN (US);
Floyd D Niskanen, Golden Valley, MN (US);
The Toro Company, Minneapolis, MN (US);
Abstract
A snowthrower (20) including an improved impeller (50) which has an 'open center' configuration and which is substantially made from a single piece of plastic. Impeller (50) includes a pair of curved blades (60) which are supported, braced and stiffened by a plurality of 'spiders' (62, 64, 66, 68, 72, 74, 76 and 78) which form recesses for receiving a shaft (42) which spans between the side walls (36) of the snowthrower housing (22). Curved blades (60) of impeller (50) extend transversely between a pair of somewhat circular plates (52, 54). Plates (52, 54) preferably include teeth (54b, 54c, 52b, 52c) which help to break up snow and ice and assist in propelling snowthrower (20).