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. 02, 1987
Filed:
Nov. 20, 1985
Claude E Petruzzi, Bronxville, NY (US);
Circon Corporation, Santa Barbara, CA (US);
Abstract
Disclosed is a method for the fabrication of a flexible shaft comprising a spiral cut member having an essentially uniform inside diameter and a tapered linear profile coextensive with at least a portion of the spiral of sai d member. This flexible shaft is fabricated initially by progressively removing a portion of the exterior wall along a predetermined segment of a relatively rigid tube thereby forming a tapered profile along such segment. A series of cuts are thereafter made in the wall of the tapered segment of the tube resulting in a progressive and transition free increase in flexibility along itslongitudinal dimension; that portion of the tapered segment having the thinner wall being increasingly more flexible than that portion of the tapered segment having a comparatively thicker wall.