Machine for compression molding closure shells

Details Machine for compression molding closure shells Machine for compression molding closure shells

2007-07-10

2007-07-10

Gupta, Yogendra N. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Sets of male-female press molds

Traveling female mold

C425S351000, C425S438000, C425S441000, C425S809000, C425SDIG058

Reexamination Certificate

active

11264947

ABSTRACT:
A machine for compression molding plastic closures includes a support mounted for rotation around an axis, and a plurality of compression molds on the support at angularly spaced positions around the axis. Each of the molds includes a male mold section and a female mold section, at least one of which is movable with respect to the other between a closed position to form a compression mold cavity and an open position spaced from each other. The male mold section includes a mold core and a stripper sleeve surrounding the mold core for movement both rotationally and axially of the mold core. A first screw drive couples the female mold section to the stripper sleeve for rotating the stripper sleeve around the mold core as the at least one mold section is moved between the closed and open positions. A second screw drive couples the stripper sleeve to the support to move the stripper sleeve axially over the mold core as the stripper sleeve is rotated around the core. The stripper sleeve thus rotationally and axially removes a closure shell molded around the core as the at least one mold section is moved with respect to the other from the closed toward the open position.

REFERENCES:
patent: 4497765 (1985-02-01), Wilder et al.
patent: 4776782 (1988-10-01), Murayama et al.
patent: 5383780 (1995-01-01), McCready et al.
patent: 5421717 (1995-06-01), Hynds
patent: 5447674 (1995-09-01), Schellenbach
patent: 5565223 (1996-10-01), McCready et al.
patent: 5670100 (1997-09-01), Ingram
patent: 5776521 (1998-07-01), Wright et al.
patent: 5786079 (1998-07-01), Alieri
patent: 5798074 (1998-08-01), McCready et al.
patent: 6238202 (2001-05-01), Joseph
patent: 6390800 (2002-05-01), Brown et al.
patent: 6585508 (2003-07-01), Zuffa
patent: 6599115 (2003-07-01), Chalcraft et al.
patent: 6602065 (2003-08-01), Ingram
patent: 6706231 (2004-03-01), Ingram
patent: 6733269 (2004-05-01), Niese
patent: 6736628 (2004-05-01), Zuffa
patent: 2003/0003183 (2003-01-01), Zuffa
patent: 2003/0006532 (2003-01-01), Graham et al.
patent: 2003/0190385 (2003-10-01), Niese
patent: 362264923 (1987-11-01), None

Affiliated with

Also associated with

Rating

Machine for compression molding closure shells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Machine for compression molding closure shells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine for compression molding closure shells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3802168