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:
Nov. 19, 2002
Filed:
Jun. 07, 2000
Robert C. Berfield, Jersey Shore, PA (US);
Shop Vac Corporation, Williamsport, PA (US);
Abstract
A vacuum cleaner has an electric motor driving an air impeller for creating a low pressure and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. A priming apparatus is provided for priming the pump impeller. An outlet of the pump is connected to a discharge outlet carried by an upper vacuum assembly. Outlet piping connects the pump outlet to the discharge outlet. A pinch valve selectively closes the outlet piping to allow the priming apparatus to prime the pump. The pump and outlet piping are preferably carried by the upper vacuum assembly to facilitate conversion of the vacuum cleaner between wet and dry pick-up.