滑精病
专利名称：Method for manufacturing a pinched seal for an electric lamp envelope and pinching
device for carrying out the method
发明人：GRAHMANN, HELMUT, ING.-
GRAD.,HOFMANN, DIETER, DR.,WACKER,
近亲吧ALFRED, DIPL.-ING.,LUDWIG, FRITZ,RUPP,
液气分离器REINHARD
管理评论申请号：EP82102635.8
申请日：19820329
公开号：EP0061757A2
公开日：
贝璐瑛
19821006
专利附图：
摘要：1. A method of manufacturing a pinch seal for an electric lamp that consists of a tubular lamp envelope (1), a mount comprising two lead-in wires (3) between which寒冷也是一种温暖迟子建
extends a filament (8), and, if required, a holder (16) and an exhaust tube (4), whereby the
end of the lamp envelope (1) comprising the mount is heated to softening temperature and is hermetically sealed by a pinching operation, characterized in that immediately after the pinching operation while the glass is still soft and the pinch jaws are still closed, the interior of the lamp envelope (1) is exposed to a predetermined excess gas pressure (P) whereby the pinched end of the lamp envelope (1) is subjected to a predetermined enlargement of volume (V) defined by the pinch jaws, such that the transition from the front face (7) terminating the lamp envelope (1) to the generated surface of the lamp envelope (1) has substantially the shape of a circumferential edge.
申请人：PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH 地址：Hellabrunner Strasse 1 D-81543 München DE
国籍：DE
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