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:
Mar. 03, 1987
Filed:
Mar. 18, 1985
Applicant:
Inventors:
William F Rush, Chicago, IL (US);
James E Huebler, Brookfield, IL (US);
Christopher J Ziolkowski, Chicago, IL (US);
Assignee:
Institute of Gas Technology, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ;
U.S. Cl.
CPC ...
138 98 ; 73 4 / ; 734321 ; 138 93 ; 138 97 ; 104155 ; 1041382 ;
Abstract
A pipe worm comprises radially inflatable toroids spaced along an axially inflatable tubular body. The worm inches through piping through sequential inflation and deflation of the toroids and tubular body. The worm includes a fluid supply source, pipe maintenance instrumentation and automatic, semiautomatic or manual controls which are remote, on-board or trailered, as desired. The worm is inexpensive, reliable, capable of turning 90 degree corners, and further uniquely advantageous.