Postage meter housing arrangement having RF and electromagnetic

Details Postage meter housing arrangement having RF and electromagnetic Postage meter housing arrangement having RF and electromagnetic

1992-08-19

1993-04-20

Picard, Leo P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361383, 361424, 235101, H05K 502, H05K 714, H05K 720

Patent

active

052048071

ABSTRACT:
In order to eliminate complex sheet forming operations, to provide an effective heat sink and to shield against radio frequency interference and electromagnetic induction effects, the housing arrangement has two assemblies which each comprise, inter alia, a die casting made of zinc or other material having equivalent radio frequency interference and electromagnetic induction shielding properties. A main logic circuit board is shielded by the two die castings when they are assembled together.

REFERENCES:
patent: 4084214 (1978-04-01), Eppich
patent: 4650973 (1987-03-01), Pike
patent: 4683519 (1987-07-01), Murakami
patent: 4788447 (1988-11-01), Kiyono et al.
patent: 4794489 (1988-12-01), Brown
M. B. Jewell and Mark W. Johnson, "Internally Modular Signal Generator Mechanical Design", Hewlett-Packard Journal Dec., 1985.

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