Expansible chamber devices – Working member moves load and latching means for load
Patent
1982-10-04
1985-12-17
Garrett, Robert E.
Expansible chamber devices
Working member moves load and latching means for load
92 90, 292339, 236 92R, G05D 2700
Patent
active
045586322
ABSTRACT:
A container lid (12) is held open by a support plate (18) carrying a chamber (20) which expands at a predetermined point in a sterilizing cycle to react against the lid, moving the plate outwardly to permit the lid to drop onto the container base. A resilient gasket (16) prevents fluid flow into the container after the lid is fallen, but permits fluid flow outwardly past the gasket when interior pressure exceeds exterior pressure. When the container is to be opened, a relief valve (60) relieves the vacuum within the container and filters air entering the container at that time.
REFERENCES:
patent: 2032563 (1936-03-01), Clifford et al.
patent: 3507586 (1970-04-01), Gronemeyer et al.
patent: 3710813 (1973-01-01), Hodgman, Jr.
patent: 4374570 (1983-02-01), Sanderson et al.
1
Sanderson Roger S.
Whelchel Robert C.
Garrett Robert E.
Husar John M.
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