RICHARD C BEVINGTON
Vehicle Board in Delmont, PA
License number
Pennsylvania MV148886L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Delmont, PA 15626
Professional information
Powder Metallurgy Silver-Tin Oxide Electrical Contact Material
US Patent:
5258052, Nov 2, 1993
Filed:
Jun 18, 1992
Appl. No.:
7/900473
Inventors:
Richard C. Bevington - Delmont PA
Assignee:
Advanced Metallurgy Incorporated - Export PA
International Classification:
C22C 2912
US Classification:
75234
Abstract:
A powder metallurgy material for use in the manufacture of electrical contacts and having enhanced cold workability consists essentially, by weight percent, of 5 to 20% tin oxide, 2000 to 5000 ppm, preferably 2000 to less than 4000 ppm copper, 20 to 200 ppm, preferably 20 to 100 ppm, lithium, balance silver. Such materials are produced by compacting the powdered components and heating to sinter the material to at least 93% of theoretical density. Such materials subsequently can be hot or cold worked to a form useful for the manufacture of electrical contacts.
Silver Material Suitable For Backing Of Silver-Cadmium Oxide Contacts And Contacts Employing Same
US Patent:
4450204, May 22, 1984
Filed:
Jun 17, 1982
Appl. No.:
6/383416
Inventors:
Han J. Kim - Greensburg PA
Richard C. Bevington - Delmont PA
Richard C. Bevington - Delmont PA
Assignee:
GTE Products Corporation - Stamford CT
International Classification:
B22F 702
US Classification:
428552
Abstract:
A two-layer contact having a silver backing and a silver cadmium oxide body which backing is relatively free of warpage and macroscopic voids is produced from a mixture of silver oxide, silver acetate and silver.
Silver Electrical Contact Materials And Method Of Making
US Patent:
4056365, Nov 1, 1977
Filed:
Nov 10, 1975
Appl. No.:
5/630349
Inventors:
Richard C. Bevington - Delmont PA
David J. Snee - Murrysville PA
David J. Snee - Murrysville PA
Assignee:
Gibson Electric, Inc. - Delmont PA
International Classification:
B22F 300
US Classification:
428565
Abstract:
Electrical contact material of silver or mixtures of silver and a thermally decomposable compound of silver having an additive of an alkali metal, for example lithium, added in the form of a salt prior to sintering to increase the as-sintered density of the resulting material and to aid in the prevention of undesirable surface blisters. The silver material may be fabricated as a backing layer on a primary contact material of silver-cadmium oxide.