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:
Mar. 03, 1998
Filed:
Jul. 03, 1996
Takashi Yoshimoto, Toyama, JP;
Yasushi Hara, Toyama, JP;
Hirokuni Amano, Toyama, JP;
Masao Koshi, Toyama, JP;
Nachi-Fujikoshi Corp., Toyama, JP;
Abstract
According to the present invention there is provided a wear resistant vane for alternate flow that is appropriate for a rotary compressor that employs HFC flow as an alternate refrigerant, and which vane possesses: a reciprocal or opposed characteristic in that it does not cause to wear a piston to which it contacts and nevertheless causes little wear to itself; a preferable corrosion resistance; and an ensured reliability, in that when employed for an operation that continues for an extended period of time there is no possibility of a surface layer suddenly peeling off. The present invention discloses a vane made of a wear resistant cermet alloy for alternate flow, comprising: 5 to 20% by weight of a binder phase composed mainly of Ni; a hard phase having a double phase structure having a core composed mainly of titanium carbide, titanium nitride and/or titanium carbonitride, and a rim phase encircling the core; and inevitable impurities; the hard phase containing 30 to 60% by weight of Ti, 10 to 30% by weight of W, 0.5 to 10% of Mo, 1 to 25% by weight of at least one of Ta, Nb, Cr, V and Zr, 2 to 5.4% by weight of N and 4 to 12% by weight of C, and being uniformly dispersed in an alloy phase; and further, an average core size of the core being 1.5 .mu.m or less and a maximum core size of the core being 5 .mu.m or less.