Title: Tungsten contact point made by powder metallurgy
Application Number: 85100342 Application Date: 1985.04.01
Publication Number: 1002682 Publication Date: 1986.08.27
Approval Pub. Date: Granted Pub. Date: 1989.09.27
International Classifi-cation: B22F5/00,C22C1/04,C22C27/04,H01H1/02
Applicant(s) Name: Powder Metallurgy Inst., Zhongnan Polytechnic Univ Address:
Inventor(s) Name: Ma Kongju
Attorney & Agent: ZENG PING LI ZHANMING
Abstract:
     Tungsten contact point of the present invention is made by powder metallurgical technology. Its charactor is: simple process-only five technical operations are required. By addition of other components, the anti-oxidation ability of the contact point is improved and the material transformation in the contact point during operation is inhibited. The lifespan of each contact point can be up to 41300 average. These tungsten contact points can be used widely in automobile electricity and other electric instruments.
Time: 9
<- Previous Patent:Timing switch   |  Next Patent:Self-closing electromagnetic cont... ->