Sealing cap with a one way valve having semi-cylindrical valve c

Details Sealing cap with a one way valve having semi-cylindrical valve c Sealing cap with a one way valve having semi-cylindrical valve c

1991-05-20

1993-04-13

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422103, 435296, 215247, 215249, 215311, 215315, B01L 314

Patent

active

052020932

ABSTRACT:
A cap for a container having a slit seal and semi-cylindrical spring seal closure members that abut the inner container wall and contact the slit seal at two points spaced from the center of the slit seal. The spring members permit the flexure of the seal into the space defined by the spring when an instrument penetrates the seal. In further embodiments, the cap has a secondary closure and can maintain vacuum in a container.

REFERENCES:
patent: 1509916 (1924-09-01), Waite
patent: 1738080 (1929-12-01), Smith
patent: 2579724 (1951-12-01), Breakstone
patent: 2906423 (1959-09-01), Sandhage
patent: 3084823 (1963-04-01), Reichstein
patent: 4134512 (1974-01-01), Nugent
patent: 4152269 (1979-05-01), Babson
patent: 4763803 (1988-08-01), Schneidr
patent: 4954149 (1990-09-01), Fullemann

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