Receptacles – Closures – Motor driven
Patent
1976-08-26
1977-07-26
Hart, Ro E.
Receptacles
Closures
Motor driven
220345, 251 635, 251144, B65D 4320, B65D 5500, F16K 5100
Patent
active
040377539
ABSTRACT:
A container closure, especially for mixing containers, which comprises a round closure dish, and a pressure medium operable cylinder-piston system connected to the discharge housing. The piston rod of the cylinder-piston system is operable to move the closure dish into and out of the opening of a container to be closed. In the cylindrical outer surface of the closure dish there is provided an annular groove having inserted therein a sealing element which in the closing position of the closure dish engages the guiding surface of the discharge opening in the wall of the container to be closed. The groove having the elastic sealing element arranged therein is defined on one hand by an annular end face of a pressure dish which is displaceable by a pressure medium on the piston rod of the closure dish and is operable to vary the width of the sealing element, and on the other hand the groove is defined by a circular step which is provided in the peripheral portion of the closure dish and faces the curved annular end face of the pressure dish.
REFERENCES:
patent: 2953345 (1960-09-01), Slemmons et al.
patent: 3547589 (1970-12-01), Rice et al.
patent: 3563508 (1971-02-01), DeLorenzo
patent: 3949963 (1976-04-01), Aoki
Becker Walter
Hart Ro E.
Pollard Steven M.
Thyssen Industrie Aktiengesellschaft
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