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:
Apr. 25, 1995
Filed:
Jun. 02, 1993
Rudolph M Gunzel, Jr, Palm Springs, CA (US);
Donald J Shanklin, Fullerton, CA (US);
Darcy E Staggs, Orange, CA (US);
Roy K Fujitaki, Altadena, CA (US);
Natural Earth Technologies, Inc., San Francisco, CA (US);
Abstract
A portable electric-powered particulate spreader has a housing having an inlet and an outlet. A reservoir for holding particulate material is located above the housing. A blower is located with a flow path extending from the inlet to the outlet for inducing air flow along the flow path. A particulate intake port is formed in a channel wall which encompasses an exhaust channel extending downstream from the blower to the outlet. A valve controls flow of particulate material from the reservoir to the particulate intake port. An agitator located between the reservoir and exhaust channel rotationally reciprocates and induces vibrations which assist the flow of particulate material. A foil in the exhaust channel produces a low static pressure in the which tends to draw particulate material from the reservoir into the air flow. Delays are built in so that the blower turns on before opening the valve is opened and the valve is closed before the blower is turned off.