Fluid tight ultrasonically welded photoelectric device

Details Fluid tight ultrasonically welded photoelectric device Fluid tight ultrasonically welded photoelectric device

1978-03-17

1980-07-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Housings

156 731, H01J 502, B29C 2708

Patent

active

042119235

ABSTRACT:
A photoelectric switch comprising a housing which encloses at least a light emitting element or a light responsive element. The housing consists of two opaque plastic shells welded to each other by ultrasonic welding and a window means of transparent plastic simultaneously welded to the shells by said ultrasonic welding. The window means is formed and attached to the shells in such a manner that it includes no peripheral portion which is in parallel with the direction of ultrasonic welding pressure.

REFERENCES:
patent: 4051365 (1977-09-01), Fukuyama et al.
Branson Sonic Power Company, "New Disposable Flashlight Ultrasonically Welded", Ultrasonic News, Spring 1970.

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