Vacuum packaging apparatus

Details Vacuum packaging apparatus Vacuum packaging apparatus

1990-10-30

1992-02-18

Coan, James F.

Package making

Gas filling and/or evacuating of receptacle and closing

Within enclosure

53 97, 53510, B65B 3102, B65B 5902

Patent

active

050882686

ABSTRACT:
A vacuum chamber has its cover 11 adjustable in height by way of two rams 37 and 38 which lift a chamber cover ceiling 39 relative to a sidewall assembly 35, with the agency of an equalizing cylinder 41 to ensure identical lifting and lowering of the ceiling. During adjustment, an inflatable seal 33 around the periphery of the ceiling 39 is relaxed to allow the sliding movement and then after adjustment the seal 33 is re-inflated to ensure complete sealing between the ceiling 39 and the sidewall assembly 35.

REFERENCES:
patent: 1588079 (1926-06-01), Winters
patent: 2054492 (1936-09-01), Young
patent: 2601020 (1952-06-01), Hopp
patent: 3928940 (1975-12-01), Fagniart
patent: 4248275 (1981-02-01), Reed

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