Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-12-19
1992-07-14
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
211 41, 3122652, 361415, 361429, H05K 714
Patent
active
051308878
ABSTRACT:
The present invention relates to an instrument case including two side panels, arranged to mate with a further panel to be supported substantially parallel thereby and to a member adapted to interlock in a plane normal thereto with both side members to brace the side members. The side panels, the further panel and the member coact to provide a self-supporting structure. The case may be completed by the addition of further panels. The case constitutes a support and enclosure for circuit boards, the member forming a mother-board which may act as a case divider. The case thus formed solves the problem of providing a circuit board support and mother-board without recourse to additional components and a card frame with its consequent weight penalty.
REFERENCES:
patent: 4277120 (1981-07-01), Drake
patent: 4301494 (1981-11-01), Jordan
patent: 4356531 (1982-10-01), Marino
patent: 4426675 (1984-01-01), Robinson
patent: 4527222 (1985-07-01), Swingly, Jr.
patent: 4530033 (1985-07-01), Meggs
patent: 4544066 (1985-10-01), Koppensteiner
patent: 4752861 (1988-06-01), Niggl
patent: 4866576 (1989-09-01), Umetsu
Schlumberger Technologies Limited
Tolin Gerald P.
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