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:
Jan. 10, 1989
Filed:
Jan. 22, 1985
Timothy H Wentzell, South Windsor, CT (US);
Combustion Engineering, Inc., Windsor, CT (US);
Abstract
A probe (8) for inspecting the walls of a tubular conduit (40, 42) or the like is provided with a pair of movable arms (20a, 20b) urged outward from a central rod 4 into contact with the tube interior. Eddy current coils (16, 18) carried in the tube engaging ends (32a, 32b) of the arms (20a, 20b) are maintained in a constant, spaced apart relationship with the tube wall interior for increasing inspection accuracy and sensitivity. The movable arms (20a, 20b) can accommodate varying internal tube diameters, expanding and contracting relative to the central rod (4). A sloping nose (2) and tapered arm portions (32a, 32b) assist the probe in traversing the conduit interior.