Metal working – Means to assemble or disassemble – Means to assemble electrical device
Patent
1995-05-30
1998-03-31
Vo, Peter
Metal working
Means to assemble or disassemble
Means to assemble electrical device
29758, 29759, 269903, B23P 1904
Patent
active
057324620
ABSTRACT:
A fixture having an open ended housing cavity defined by an inwardly inclined wall, and including at least one moveable segment having an inwardly facing wall which defines one wall of a stack cavity configured for receiving a plurality of circuits chips positioned one over another for bonding together in a stack configuration, and an outwardly facing wall of the segment is inclined at the angle of the inclined wall of the housing and arranged in mating relation therewith such that when the segment is moved in one direction along the inclined wall of the housing, it will be urged inwardly to align the circuit chips within the stack cavity, and when urged in an opposite direction it can move outwardly to expand the stack cavity for loading and unloading. A truncated cone shaped housing cavity is preferred with four movable segments having outwardly facing walls inclined similar to the inclined wall of the housing cavity and in mating relation therewith such that when the segments are moved upwardly along the inclined housing surface, they can be urged away from each other to expand the stack cavity, and when the segment are moved downwardly along the inclined surface of the housing, they will be urged inwardly to align the circuit chips in the stack cavity.
REFERENCES:
patent: 3755048 (1973-08-01), Schubert
patent: 4506442 (1985-03-01), Alzman et al.
patent: 4617160 (1986-10-01), Belanger et al.
patent: 4704319 (1987-11-01), Belanger et al.
patent: 4767984 (1988-08-01), Bakker
patent: 5101550 (1992-04-01), Dunaway et al.
patent: 5316278 (1994-05-01), Sherstinsky et al.
"Semi-Universal Chip Carrier Package Holding Fixture for Branding" Manfredi, RCA Technical Notes, TN No. 1345, Apr. 1984, Two Sheets.
International Business Machines - Corporation
Vo Peter
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