Electric device with an operation indicating lamp

Details Electric device with an operation indicating lamp Electric device with an operation indicating lamp

1989-04-04

1990-02-06

Thompson, Gregory D.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29841, 29855, 174 522, 361392, 361394, H05K 114

Patent

active

048992577

ABSTRACT:
An electric device with an operation indicating light has a base and a case transversely divisible in a main frame and a case cover. The main frame is fitted to the base at one open end of the frame. A resin material is injected into the space provided by the base and the main frame. The case cover is fitted to the other open end of the main frame so that an operating indicating lamp can be seen through an indicating hole in the case cover. Thus, the device can be easily assembled, and the resin material does not leak from the gap between the operation indicating lamp and the indicating hole. Cracks are prevented from developing in the solder connecting the lamp to the circuit board. In addition, the lamp can be positioned at a high precision because no packing is required to prevent resin leakage.

REFERENCES:
patent: 4038584 (1977-07-01), Tarchalski et al.
patent: 4054932 (1977-10-01), Sehmer et al.
patent: 4172272 (1979-10-01), Schneider
patent: 4361371 (1982-11-01), Williams
patent: 4620263 (1986-10-01), Ito

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