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US 4,101,185 AGranted
Method for producing a low-pressure gas discharge lamp
AssigneeU.S. Philips Corporation
InventorsJohannes van Esdonk, Jan Hasker, Johannes Cornelis Gerardus Vervest
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Abstract
A method of producing a low-pressure gas discharge lamp in which a body of a solid material having a thin, structure of filaments permeable to the gas discharge such as glass wool is disposed. Coherence is given to the filaments by compressing them whereafter they are sucked into the lamp envelope. Compressing, knitting together and producing the wire-shaped elements is done in a funnel-shaped space which is connected at its constricted side to the tubular discharge space.
Claims14
A method for producing a low-pressure discharge lamp which comprises:
- providing a lamp envelope, said envelope including walls defining a tubular discharge space, providing a body comprising filaments of solid material elements, said body being permeable to a gas discharge, providing coherence to said filaments in a second space adjacent to said tubular discharge space by subjecting said filaments to a gas current and by whirling said filaments, then sucking said filaments into said discharge space, and completing the manufacture of said lamp.
Dependencies are inferred from the claim text.