Plug-opening device for a specimen container

Details Plug-opening device for a specimen container Plug-opening device for a specimen container

1993-04-14

1994-08-23

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing gas sample

81 32, 81 355, B01L 1100, B67B 702

Patent

active

053405447

ABSTRACT:
A plug-opening device which includes a rod capable of moving forwards or backwards, and a plug-opening member having elastic leaf springs, for urging against a circumferential side of a plug of a specimen container, attached to the rod in the longitudinal direction. The plug-opening member preferably includes a plurality of leaf springs in a stack formation, wherein an end portion of a higher leaf spring relative to another end portion of a lower leaf spring, adjacent to the higher leaf spring, extends further away from the end portion of the rod. More preferably, the plurality of leaf springs are attached with a gap being formed between upper and lower leaf springs. The plug-opening device can reliably, effectively, and smoothly open a plug of a specimen container with one stroke of the cylinder rod.

REFERENCES:
patent: 854812 (1907-05-01), Dodge
patent: 1890882 (1932-12-01), Murray
patent: 2029804 (1936-02-01), Williamson
patent: 3628405 (1971-12-01), Fleisher
patent: 4135883 (1979-01-01), McNeil et al.
patent: 4217798 (1980-08-01), McCarthy et al.
patent: 4869133 (1989-09-01), Irazoqui et al.
patent: 5008082 (1991-04-01), Shaw
patent: 5080864 (1992-01-01), Shaw
patent: 5138891 (1992-08-01), Johnson

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