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:
Dec. 05, 1978
Filed:
Jul. 29, 1977
Hugo S Ferguson, Troy, NY (US);
Other;
Abstract
A mower of the cross-flow blower type has clutch means for engaging the motor with the rotor and disengaging the motor therefrom. One wall section of the blower conduit has an abrasive panel facing the rotor and is mounted for movement between a moving position in which the abrasive panel is spaced from the rotor and a brake/sharpening position in which the panel is contacted by the rotor blades. Means are provided for automatically moving the abrasive panel to the brake/sharpening position when the clutch means is disengaged and to the mowing position when the clutch means is engaged. Advantageously the abrasive panel is on a portion of the upper wall section which is close to the rotor and forms the front vortex breaker of the blower conduit. The wall section carrying the abrasive panel may be pivotally mounted or, advantageously, resiliently attached to the adjacent portion of the blower conduit. An eccentric rod may be employed for moving the wall section and abrasive panel.