Self-supporting shrinking mandrel

Details Self-supporting shrinking mandrel Self-supporting shrinking mandrel

1980-06-18

1982-01-12

Derrington, James H.

Static molds

Core

Including means to expand or contract core

249178, 249179, 425470, B28B 730

Patent

active

043101380

ABSTRACT:
A self supporting shrinking mandrel including an actuator with a plurality of legs, each terminated by a cross member. The legs and cross members are inserted into grooves of a plurality of support members. The grooves and cross members cooperate to hold the support members in place making the entire mandrel self supporting. The actuator is tapered in cross section along the longitudinal axis which causes a positive shrinking action as the support members are drawn toward the longitudinal axis when the actuator is withdrawn from the combination.

REFERENCES:
patent: 3248756 (1966-03-01), Mills et al.
patent: 4130264 (1978-12-01), Schroer

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