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:
Jun. 29, 1976
Filed:
Dec. 12, 1974
Applicant:
Inventors:
William A Finch, Marblehead, MA (US);
Frederick A Loughridge, Ipswich, MA (US);
Rudolf Marcucci, Beverly, MA (US);
Assignee:
GTE Sylvania Incorporated, Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
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.