Collapsible core assembly for a molding apparatus

Details Collapsible core assembly for a molding apparatus Collapsible core assembly for a molding apparatus

2007-11-13

2007-11-13

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S522100, C425S438000, C425S577000

Reexamination Certificate

active

11143528

ABSTRACT:
A collapsible core device for molding articles around the core device in a mold cavity includes a first sleeve, a second sleeve and an expansion member. The first sleeve includes a plurality of first ribs extending from a first base in an axial direction and defining a discontinuous first perimeter surrounding a channel. The second sleeve includes a plurality of second ribs extending from a second base in an axial direction and defining a discontinuous second perimeter surrounding the central channel. Each of the second ribs is arranged between adjacent ones of the first ribs. The expansion member is fittable within the central channel to displace the first and second ribs outwardly to form an overall perimeter defined by the first and second ribs.

REFERENCES:
patent: 3247548 (1966-04-01), Fields
patent: 3632264 (1972-01-01), Butcher
patent: 3655323 (1972-04-01), Hall
patent: 4021180 (1977-05-01), Smith
patent: 4286766 (1981-09-01), von Holdt
patent: 4533312 (1985-08-01), VonHoldt
patent: 4618121 (1986-10-01), Conti
patent: 4627810 (1986-12-01), VonHoldt
patent: 4861257 (1989-08-01), Siotani
patent: 4919608 (1990-04-01), Catalonotti
patent: 4938679 (1990-07-01), Pietrorazio
patent: 6506330 (2003-01-01), Schweigert
patent: 2006/0061009 (2006-03-01), Clack

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