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:
Nov. 28, 1978
Filed:
Feb. 24, 1977
Applicant:
Inventors:
Katsuhiko Takahashi, Tokorozawa, JP;
Hachiro Doi, Kamifukuoka, JP;
Assignee:
Fuso Keigokin Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A01D / ;
U.S. Cl.
CPC ...
56 136 ; 56 175 ; 56295 ;
Abstract
Disclosed is a lawn mower having several pairs of rotatable blades attached to a rotatable frame. The rotatable frame is motor driven, and centrifugal forces cause a frictional engagement between blade driving means and a portion of the frame so that each pair of the blades assume a planetary rotary motion, yet are capable of movement away from obstacles. Each pair of blades consists of two overlapping circular blades that are in frictional engagement with each other and rotate in opposite directions to effect a cutting action.