Stopper assembly for a mold opening

Details Stopper assembly for a mold opening Stopper assembly for a mold opening

1995-10-27

1997-08-19

Woo, Jay H.

Receptacles

Closures

Externally adjustable plug or gasket

249141, 249 79, B29C 3304, B65D 5300

Patent

active

056578903

ABSTRACT:
An improved packing means for sealing water holes in molds includes a first and second pressure elements having flanks on both sides and holding therebetween a steel ring. A first and second rubber rings are respectively provided next to the first and second pressure elements. The first rubber ring, the first pressure element, the steel ring, the second pressure element and the second rubber ring are respectively fitted onto a threaded rod portion of a main seat. The packing means further includes a locking seat having an internally threaded rod at one end thereof and an upper end provided with a slot or Phillips head at the other end thereof. The locking seat is locked onto the threaded rod portion of the main seat by means of a slotted or Phillips head screwdriver. Upon tightening, the first and second rubber pressure elements will press against the first and second rubber rings to stretch them outwardly and the steel ring to expand and be positioned in place. The first and second rubber rings may be fitted into the water holes of mold to effectively stop the entrance of water.

REFERENCES:
patent: 3667640 (1972-06-01), Morrow
patent: 3813201 (1974-05-01), Frederick et al.
patent: 3822857 (1974-07-01), Tanie
patent: 4026512 (1977-05-01), Holt
patent: 4494670 (1985-01-01), Barone
patent: 5184698 (1993-02-01), Coffenberry

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