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. 22, 1998
Filed:
Jul. 12, 1996
Robert C Berfield, Jersey Shore, PA (US);
Randy L Buss, Hughesville, PA (US);
Craig A Seasholtz, Avis, PA (US);
Shop Vac Corporation, Williamsport, PA (US);
Abstract
A vacuum cleaner has an electric motor driving an air impeller that creates low pressure inside the tank of the vacuum cleaner. The motor also drives a pump impeller which is located in the tank and draws liquid material from the bottom of the tank and expels it from the tank. Near an inlet to the pump is a priming mechanism having bellows which are compressed to force liquid material up into the pump. Portions of the pump, including the inlet and the outlet as well as the priming mechanism, are attached to a tank extension which fits over the top of the tank. The lid of the vacuum cleaner, which carries the motor and air impeller, fits over the tank extension when the vacuum cleaner is used for liquid material. The tank extension and its associated pump components are removable from the tank to facilitate use of the vacuum cleaner on dry material.