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. 10, 1983
Filed:
May. 04, 1981
Applicant:
Inventors:
Eric G de Buda, Toronto, Ontario, CA;
Anthony L Allen, Toronto, Ontario, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73592 ; 73623 ; 2503581 ;
Abstract
An inspection device for use in scanning the interior of a pipe at a remote location is accurately centered within the pipe at the required location by two spiders. Each spider has three sickle-shaped arms which can be extended and retracted between operative and inoperative positions. The six spider arms are interconnected by a crank mechanism which ensures that all the arms move in unison between their limit positions.