WILLIAM A FINCH
Engineering in Marblehead, MA
License number
Massachusetts 13116
Issued Date
Jul 14, 1960
Expiration Date
Jun 30, 2004
Type
Mechanical Engineer
Address
Address
Marblehead, MA 01945
Professional information
Method For Making High Intensity Discharge Arc Tube
US Patent:
3966288, Jun 29, 1976
Filed:
Dec 12, 1974
Appl. No.:
5/532078
Inventors:
William A. Finch - Marblehead MA
Frederick A. Loughridge - Ipswich MA
Rudolf Marcucci - Beverly MA
Frederick A. Loughridge - Ipswich MA
Rudolf Marcucci - Beverly MA
Assignee:
GTE Sylvania Incorporated - Danvers MA
International Classification:
H01J 918
US Classification:
316 19
Abstract:
A quartz tube is held in a lathe and rotated while heat is applied to an intermediate portion thereof. When the quartz is heated to plasticity, rotation is stopped and a mold is rapidly closed around the softened quartz. The quartz is shaped in the mold by the rapid application of gas pressure in the tube.