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:
Jun. 03, 1986
Filed:
Jan. 19, 1984
Timothy H Wentzell, South Windsor, CT (US);
Combustion Engineering, Inc., Windsor, CT (US);
Abstract
A repair sleeve assembly (12) secured entirely within a tube (16). A hollow tension member (18) has an enlarged head (26), a lower externally threaded stem (28) and a generally cylindrical body portion (30) intermediate the head and stem. A segmented sheath surrounds the tension member and includes a generally cylindrical nut member (24), a ring member (22) and a sleeve member (20), which are operatively arranged such that when the tension member is drawn downward, the enlarged head and lower ring member compress the sleeve to form seals against the tube wall. A tool for effecting the seal is also disclosed, including an inner rod (38) having an upper end (40) adapted to engage the lower end of the tension member, for aligning the tool relative to the repair assembly, and lugs (42) carried circumferentially on the rod to engage the tension member. A chuck member (44) is adapted to move longitudinally and rotationally with respect to the inner rod, and carries tangs (46) for engaging the nut member. The seal is effected by advancing the nut member relative to the stem, whereby the sleeve (20) is compressed between the head (26) and the ring (22) into engagement with the tube wall.