Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1988-09-01
1990-03-06
Thompson, Gregory D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
174 163, 361387, 361388, H05K 720
Patent
active
049071246
ABSTRACT:
An electrical circuit assembly (2) includes a heat sink (4), a ceramic substrate (6) on top of the heat sink (4), heat generating electrical components (8), including circuit elements (10) and lead frames (12), on top of the substrate. A threaded bolt (28) extends through aligned holes (22, 18, 16, 14) in the lead frame, substrate and heat sink and is electrically isolated from the lead frame and prevents short circuiting between the lead frame and the heat sink by a ceramic washer (24) having a lower annular portion (26) extending axially downwardly in the aligned holes around the bolt and having an upper radially extended shoulder flange (27) beneath an enlarged head (32) of the bolt.
REFERENCES:
patent: 3369597 (1968-02-01), Dronsuth et al.
patent: 3571663 (1971-03-01), Hungate
patent: 3958075 (1976-05-01), Kaufman
patent: 4156148 (1979-05-01), Kaufman
patent: 4196411 (1980-04-01), Kaufman
patent: 4215235 (1980-07-01), Kaufman
patent: 4218724 (1980-08-01), Kaufman
patent: 4250481 (1981-02-01), Kaufman
patent: 4266140 (1981-05-01), Kaufman
patent: 4394530 (1983-07-01), Kaufman
patent: 4449165 (1984-05-01), Kaufman
patent: 4449292 (1984-05-01), Kaufman
patent: 4488202 (1984-12-01), Kaufman
patent: 4498120 (1985-02-01), Kaufman
patent: 4546410 (1985-10-01), Kaufman
patent: 4546411 (1985-10-01), Kaufman
patent: 4554613 (1985-11-01), Kaufman
patent: 4574162 (1986-03-01), Kaufman
patent: 4574879 (1986-03-01), DeGree et al.
patent: 4577387 (1986-03-01), Kaufman
patent: 4630174 (1986-12-01), Kaufman
patent: 4646203 (1987-02-01), Ngo et al.
patent: 4700273 (1987-10-01), Kaufman
patent: 4713723 (1987-12-01), Kaufman
patent: 4724514 (1988-02-01), Kaufman
patent: 4739449 (1988-04-01), Kaufman
Madrange et al, "Diode Mounting Device", IBM Technical Disclosure Bulletin, vol. 11, No. 7, 12/68, p. 771.
LandOfFree
Bolted circuit assembly with isolating washer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bolted circuit assembly with isolating washer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bolted circuit assembly with isolating washer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-52719