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:
Jul. 29, 1997
Filed:
Jan. 20, 1995
Peter L Weinstein, Highland Park, IL (US);
James Allen, Lake Villa, IL (US);
Jason M Landborg, Palos Hills, IL (US);
David Zimberoff, Chicago, IL (US);
Hoffman & Klemperer, Chicago, IL (US);
Abstract
There is disclosed herein an adapter system for use with a hand-held electrically-driven grinding tool, which rotatably drives a grinding wheel for removing grout or mortar from a work site. The adapter system is constructed to controllably deliver a liquid, usually water to the grinding wheel. The adapter system includes a valve assembly mounted to the tool body, which assembly includes: (1) a housing which defines an inlet and an outlet and (2) a shut off valve member positioned within the housing and between the inlet and outlet and operable from external of the housing to selectively provide and interrupt communication between the inlet and the outlet. There is also provided a supply conduit leading from a source and connected to the inlet for delivering liquid from the source to the valve housing inlet. A flexible delivery conduit is provided and connected to the valve housing and positionable adjacent to periphery of the grinding element. The valve can be mounted to the grinding tool and then a grasping handle can be mounted to the valve and a wheel-like adapter is provided for that connection. A unitary housing for electric and water connections is also provided which includes a ground fault interrupter and can include an electric/water interlock whereby electric operation is prevented until the water connections are made.