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:
Oct. 05, 1999
Filed:
Jan. 23, 1997
Richard Carl Polivka, Lemont, IL (US);
Abstract
A motor with a single driven shaft and double-ended collet is attached to a movable work unit for cutting laterals in a lined pipeline. The motor is preferably operated by an operator at a remote location. The motor attaches to the front arm of the extension ram of a typical remote work unit, which can index at least 180.degree. relative to the unit. The work unit is positioned in an existing conduit lined with a synthetic liner at the location of a lateral and a cutter bit at one end of the shaft is used to cut an aperture through the liner. The cutter bit is retracted radially without displacing the work unit, and the motor is indexed circumferentially 180.degree. relative to the extension ram. This positions the finishing bit at the other end of the shaft to trim the edges of the aperture, and the finishing bit is then retracted radially. The underground work unit can then be withdrawn from the pipe.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile