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:
Oct. 29, 2013
Filed:
Mar. 04, 2010
Richard A. Proulx, Alta Loma, CA (US);
Richard A. Proulx, Alta Loma, CA (US);
Proulx Manufacturing, Inc., Rancho Cucamonga, CA (US);
Abstract
An aerodynamic trimmer head for use in flexible line rotary trimmers having an aerodynamic, generally ellipsoidal profile and a plurality of aerodynamic elements defined by the upper and lower head surfaces for directing air, during rotation of the head, off of and over the upper and lower head surfaces and preferably away from the line extending from the housing, thereby reducing the drag on the head and the line projecting from the housing. The aerodynamic elements on the upper head surface preferably are defined by a plurality of equidistantly spaced inclined troughs extending downwardly and forwardly along curvilinear paths on the upper head surface and the aerodynamic elements on the lower head surface preferably are defined by a plurality of dimples formed in an annular surface extending about the lowermost end of the spool and a plurality of rearwardly inclined troughs formed about and above the dimples.