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:
Feb. 16, 1999
Filed:
Mar. 03, 1995
Edward J McCrink, Rancho Santa Fe, CA (US);
Other;
Abstract
The invention provides methods of manufacturing stainless steel tubing, pipe and shafts by utilizing air hardenable stainless steel. Such pipe, tubing and shafts have the important characteristics of low weight, shaft flex, torque, bend point and strength and have many uses. The shafts include a plurality of air hardenable metal segments of selected length, thickness and shape that are assembled into a shaft. This assembly is subsequently contacted with a brazing material and then placed into a controlled, non-oxidative atmosphere furnace of a sufficient temperature such that the assembly is simultaneously brazed and hardened. The tubing can include having a brazed lock seam which provides strength. The present invention further provides reinforcing members that are also brazed within the shaft, tubing or pipe while the outer piece is hardened.