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:
Apr. 29, 1986
Filed:
Dec. 06, 1984
Applicant:
Inventors:
Rudolph V Marcucci, Beverly, MA (US);
Robert Y Pai, Hamilton, MA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65277 ; 65292 ; 65295 ;
Abstract
An apparatus for manufacturing a fluorescent lamp envelope comprises means for holding the envelope, a plurality of heat sources, means for providing relative rotation between the envelope and the plurality of heat sources with the heat therefrom acting on substantially narrow axially spaced regions on the envelope, means for engaging the envelope and for forming a plurality of constricting portions at axially spaced regions on the envelope, means for moving the forming means to engage the envelope and means for applying a positive pressure within the envelope while the forming means is engaged with the envelope.