Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1994-03-23
1996-05-21
Kincaid, Kristine L.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174356C, 174 51, 361800, 285162, H02B 300
Patent
active
055191690
ABSTRACT:
A specially designed metal grounding cap is placed over a metal-plated housing boss upon which a printed circuit board is to be mounted by extending a screw through a hole in the circuit board and tightening the screw into a metal insert previously forced into the free end of the mounting boss. As the screw is tightened into the boss insert, an EMI grounding pad on the underside of the circuit board engages an end wall of the grounding cap and pushes it into forcible engagement with the inner end of the boss. The forcible engagement of the grounding cap end wall causes leg portions of the cap to pivot inwardly and engage portions of the plated boss side wall between the boss insert and the metal plated housing wall from which the boss inwardly projects. The installed grounding cap thus serves as a conductive bridge around plating disturbances on the boss, in the region of the forcibly installed insert therein, to maintain an EMI grounding path from the installed circuit board to the metal plating on the housing wall.
REFERENCES:
patent: 2825042 (1958-02-01), Tollefson et al.
patent: 3222093 (1965-12-01), Simmons
Garrett Robert
Kocis Thomas J.
Cornelison Michael J.
Dell USA L.P.
Garrana Henry N.
Kahler Mark P.
Kincaid Kristine L.
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