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:
Sep. 15, 1981
Filed:
Dec. 28, 1978
Irving D Press, West Orange, NJ (US);
Harvey R Nickerson, Roseland, NJ (US);
Resistoflex Corporation, Roseland, NJ (US);
Abstract
An end fitting for metal tubing having a bore provided with spaced annular grooves is also provided with a thin hard metal tubular insert which is disposed within the end of the tubing when the tubing is introduced into the bore and extends from the inner extremity of the metal tube to a point beyond the last annular groove. At least a portion of the insert is expanded radially along with the overlying section of the tubing forcing the latter into said grooves. The insert may have an unexpanded end portion which makes at least a snug fit within the unexpanded tube. The result is substantially increased flex life of the metal tube.