Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1998-01-16
1999-11-30
Reichard, Dean A.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174 66, 220 38, H05K 900
Patent
active
059946431
ABSTRACT:
A housing includes a frame having side walls and a bottom portion and further having an engaging portion along an opening brim of the frame and a cover engaged with the engaging portion to close the opening of the frame, the engaging portion having a vertical plane formed as an inner surface of each side wall of the frame and also having a stepped portion which faces the opening brim side of the frame, the stepped portion including a horizontal plane which is approximately perpendicular to the vertical plane and an inclined plane which is contiguous to the horizontal plane and which is inclined toward the bottom portion side as it approaches the vertical plane, the cover having a flat marginal portion and a plurality of first engaging pawls projecting from the marginal portion and inclined at a predetermined angle relative to the marginal portion, the marginal portion of the cover being brought into surface contact with the horizontal plane of the engaging portion, the first engaging pawls being brought into surface contact with the inclined plane of the engaging portion, and the tips of the first engaging pawls being allowed to bite into the vertical plane of the engaging portion and thereby engaged with the vertical plane.
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patent: 5436802 (1995-07-01), Trahan et al.
patent: 5886879 (1999-03-01), Matuschik
Alps Electric Co. ,Ltd.
Reichard Dean A.
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