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:
Feb. 24, 1987
Filed:
Apr. 08, 1985
Adolf Luerken, Rancho Palos Verdes, CA (US);
John S Cannistra, Chatsworth, CA (US);
John L Zimmerer, Torrance, CA (US);
Edward J Pilatowicz, Los Angeles, CA (US);
McCulloch Corporation, Los Angeles, CA (US);
Abstract
The present invention is directed to an internal combustion engine-powered, blower/vacuum device. The device has an air chamber with an axial air inlet and a tangential air outlet. The engine rotatably drives the impeller, and is controlled by a throttle. A handle is located above the air chamber and the motor, and includes a first section having an axis generally parallel to the axis of the air outlet, and an adjoining section having an axis which extends at an angle of about 15.degree. to 60.degree. to the first section. When the first section of the handle is gripped by an operator the device will be in the vacuum position with the air outlet in a generally horizontal position. When the second section of the handle is gripped, the device will be in the blower position with the air outlet facing ahead of the operator at a downward angle. The impeller and housing of the device is designed to minimize debris hangup within the housing. The impeller blades have a front edge facing the air inlet extending at an angle to the impeller blade radial plane from the vicinity of the impeller hub to the vicinity of the air inlet. The portion of the air inlet closest to the front edge of the impeller is separated therefrom by a distance of from 0.15 inches to 0.27 inches, to reduce debris hangup in the inlet while maintaining good impeller efficiency.