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:
May. 10, 1983
Filed:
Aug. 05, 1981
George C Ballas, Sr, Houston, TX (US);
Albert W Mitchell, Houston, TX (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
A rotary-type lawnmower having unique non-metallic cutting elements carried on a rotating disc-like head with a smooth rim and lower exposed surface without significant projections or recesses capable of inflicting injury to human parts. The lawnmower produces a smooth and even cut equal to rotary metal-blade machines. The cutting elements are tapered pins extruded from flexible polymeric material such as Nylon.RTM. polymer. Each cutting pin has a first portion providing supporting surfaces and an enlargement for securing the pin into the head. The cutting pins extend from the head in a tapered free-traveling end portion to a cutting end located at a cutting plane adjacent the ground's surface. The cutting pins are slidably inserted and removed from the disc.