Optical: systems and elements – Compound lens system – Microscope
Patent
1993-03-29
1995-05-09
Popek, Joseph A.
Optical: systems and elements
Compound lens system
Microscope
356246, G02B 2134
Patent
active
054145562
ABSTRACT:
A securing and locking assembly for live cell chambers includes a ring shaped unit received in a circular shaped chamber base to be secured with an upper circular shaped chamber frame unit. The ring unit is rotatable over a limited arcuate distance, and includes four L-shaped fingers space 90.degree. apart and arranged to be received outside four 90.degree. spaced radially extending peripheral recesses formed in the upper chamber unit. Upon rotation of the ring unit a predetermined arcuate distance the fingers are positioned outside the recesses of the upper chamber frame unit and upon continuing rotation of yet another predetermined arcuate distance the upper portions of the fingers engage upper portions of the chamber frame unit to uniformly secure and lock the chamber base and upper chamber unit together. Rotating the ring unit in the opposite direction will result in the unlocking of the chamber base and the upper chamber unit from each other.
REFERENCES:
patent: 3726597 (1973-04-01), Dvorak et al.
patent: 4807594 (1989-02-01), Chatenever
patent: 4974952 (1990-12-01), Focht
patent: 5054886 (1991-10-01), Ozaki et al.
patent: 5181382 (1993-01-01), Middlebrook
patent: 5257128 (1993-10-01), Diller et al.
Popek Joseph A.
Tran Andrew Q.
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