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:
May. 15, 1990
Filed:
Oct. 25, 1988
Applicant:
Inventors:
Jozsef Tokes, Budapest, HU;
Laszlo Ugrosdy, Budapest, HU;
Assignee:
Tungsram Reszvenytarsasag, Budapest, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 73 ; 141 66 ;
Abstract
An exhaust head unit for compact fluorescent lamps comprises an exhaust head block, a double rubber seal arranged in the block and serving for the reception of exhaust tubes, a vacuum valve, a gas valve, and a diaphragm for regulating the gas flow, as well as a vacuum duct and a gas duct. The vacuum valve, the gas valve and the adjoining vacuum and gas ducts are all arranged within a single exhaust head block, the diaphragm of the gas flow simultaneously constituting the seat of the gas valve.