DAVID L MCCALL
Radio and Television Technicians in Dalton, MA
License number
Massachusetts 7729
Expiration Date
Dec 31, 1994
Type
Master Technician
Address
Address
Dalton, MA 01226
Professional information
Vapor Shield Support Ring For A Vacuum Interrupter
US Patent:
4214138, Jul 22, 1980
Filed:
Mar 8, 1978
Appl. No.:
5/884617
Inventors:
John R. Lucek - Cheshire MA
David L. McCall - Dalton MA
David L. McCall - Dalton MA
Assignee:
General Electric Company - New York NY
International Classification:
H01H 902, C03B 1904, C03C 2700, H01H 3300
US Classification:
200144B
Abstract:
A vacuum shield support ring for a high voltage vacuum interrupter contains a plurality of quasi rectangular openings equidistantly spaced around the ring to allow for the upward flow of glass during the vacuum interrupter envelope forming process. Complete embedment of the openings substantially reduces the occurrence of ionized particles in the finished vacuum interrupter.