Electricity: electrical systems and devices – Miscellaneous
Patent
1990-04-24
1992-06-23
Picard, Leo P.
Electricity: electrical systems and devices
Miscellaneous
174 35R, 174 35TS, 174 51, 361399, 361427, 439108, 439109, H05K 900
Patent
active
051248891
ABSTRACT:
Electromagnetic shielding apparatus for portable telephones (300) and other electronic equipment, includes shield clips (100) for intercoupling the conductive surfaces of a housing (302 and 303) to the metal layer (205) of the circuit board (200). Each shield clip (100) mates with a corresponding edge (204) of the circuit board (200) such that tabs (208, 209, 210) insert into holes (108, 109, 110) in the central channel (111-113) of the clip (100) and feet (101, 102, 103) of the clip rest on other tabs (201, 202, 203). The clip (100) is bonded to the metal layer (205) of the circuit board preferably by resistance welding, thereby reliably connecting the clip (100) and the conductive housing surfaces to signal ground.
REFERENCES:
patent: 4028794 (1977-06-01), Ritchie et al.
patent: 4085998 (1978-04-01), Owens
patent: 4245876 (1981-01-01), Richie et al.
patent: 4252389 (1981-02-01), Olsson
patent: 4890199 (1989-12-01), Beutler
patent: 5029254 (1991-07-01), Stickney
IBM Technical Disclosure Bulletin "Contact Surface for Printed Circuit Card" by D. O. Johnson, Jr. vol. 9 No. 10 Mar. 1967.
Goodwin Ross P.
Humbert Gary A.
Hackbart Rolland R.
Motorola Inc.
Picard Leo P.
Sparks D.
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