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:
Sep. 05, 2006
Filed:
May. 09, 2003
Gerard J. Macneil, Surrey, CA;
David B. Macneil, Langley, CA;
Gordon W. Macneil, Delta, CA;
Vernon G. Bose, Langley, CA;
Gerard J. MacNeil, Surrey, CA;
David B. MacNeil, Langley, CA;
Gordon W. MacNeil, Delta, CA;
Vernon G. Bose, Langley, CA;
Abstract
A scarifier for scarifying an interior surface of a sewer pipe, which includes an elongated frame having spaced apart upstanding frame elements at either end forming a plurality of guide surfaces on each side. A first track extends from one end of the frame to another, reversibly moveable upwardly along a first set of the guide surfaces on a first side of the frame in response to a control signal, which controls a drive system coupled to the track. A nozzle assembly is reversibly moveable along the track from one end of the scarifier to another so that a nozzle, mounted on the nozzle assembly, which emits a jet of fluid towards an interior surface of the sewer pipe, is operative to scarify a swath along the interior surface.