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:
Nov. 05, 1991
Filed:
Nov. 22, 1989
Applicant:
Inventor:
Ralph J Ortolano, Rancho Palos Verdes, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
416217 ; 4162 / ;
Abstract
Steam turbine blades and buckles are attached to a rotor with pins which fit through dove-tailed connections. In one extremity of the blade and a mating position on the rotor. The pins are composed of a first material which is in a state of compression due to shot peening, a second metallic material being on the surface of the pins. The second metallic material is not as hard as the first material and provides a relative lubricating surface to facilitate removal from a mating aperture in the dove-tail formations.