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. 10, 2015
Filed:
Nov. 01, 2013
Charles Davidson, Concord, CA (US);
Charles Davidson, Concord, CA (US);
Other;
Abstract
A cutter assembly includes cutting blades spaced equidistant around a motor housing cover. The blades' cutting edges are orthogonal to a plane rotated around a housing centerline axis. Each cutting blade is ninety degrees from its adjacent cutting blades with respect to the housing centerline axis, and forty-five degrees from an axis orthogonal to the housing centerline. An embodiment includes a hinged cylindrical cover blade base locking around the housing for existing motor housings. Each cutting blade provides a forward oriented surface having a convex portion, an aft oriented surface having a convex portion, and a tip end. An embodiment provides a cutting blade tip end angle with respect to a housing centerline axis equal to the motor propeller blade pitch with respect to the same axis.