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:
Aug. 11, 1987
Filed:
Aug. 28, 1984
Charles A Long, Jr, Birmingham, AL (US);
Long Technologies, Inc., Birmingham, AL (US);
Abstract
The present invention comprises an apparatus for installing a flexible tubular liner into a pipe. The apparatus comprises means for defining a pressurized region for inserting the liner into the pipe and an insertion conduit, having an entry end and exit end connected to the means defining the pressurized region. Means are provided on the exit end of the insertion conduit for sealing, clamping the leading end of the liner to the exit end of the insertion conduit and for creating an fluid tight seal between the liner and the insertion conduit. A first feed control mean is provided for substantially continuously controlling the feed rate of the liner as one portion of the liner is inserted into the pipe. The feed control means comprises a conveyor means having a slack conveyor belt, an idler nip roller assembly, including nip rollers juxtaposed in a line space relationship to the conveyor means and means for controlling the speed of movement of the conveyor belt. A second feed control means is provided for substantially continuously controlling the feed rate of the liner as the other portion of the liner is inserted into the pipe. The present invention further comprises a diverter apparatus for diverting the liner through a diversion angle of about ninety degrees and securement means for securing a cable to one end of the liner for controlling the rate of insertion of the liner into the pipe.