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:
Jun. 18, 1996
Filed:
Feb. 07, 1994
The Consumers' Gas Company Ltd., Ontario, CA;
Abstract
A device for repairing cast iron pipe joints comprises a head having a motor for actuating a tool and a body, the head being pivotally connected to the body so that it can be pivoted from an axial position to a radial position within the pipe. In a preferred embodiment, the head includes a motor driving a drill bit. A retractable foot is extended to force the head against the pipe wall to be pierced by the drill bit, following which sealant is injected into a hollow drill shaft and flows up the helical grooves of the drill bit into the pipe joint cavity. Preferably a pair of guide wings maintains the device centered in the pipe and raised off of the pipe floor, and the operator monitors progress of the device through a video monitor.