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:
May. 31, 2005
Filed:
Jun. 07, 2002
Ian Roger Bateman, Happy Valley, AU;
Ian Roger Bateman, Happy Valley, AU;
Rib Loc Australia Pty LTD, South Australia, AU;
Abstract
An hydraulic control arrangement () in association with a pipe relining machine Includes fluid pressure supply and return lines (), a motor controller () to control a motor () and a radial position controller. The radial position controller supplies fluid under pressure to a radial positioning arrangement () to set diameter of a relined pipe. The radial position controller has a first normally closed valve () supplying fluid under pressure to the radial positioning arrangement () and a second normally open valve () allowing fluid to be withdrawn from the radial positioning arrangement (). The arrangement () allows the pipe relining machine to be withdrawn in the event of a failure.