Releasable push-in tube couplings

Details Releasable push-in tube couplings Releasable push-in tube couplings

1996-10-11

1999-06-08

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

264318, 264322, 264336, B29C 3344, B29C 4342

Patent

active

059102802

ABSTRACT:
A method of making a one-piece, rigid thermoplastics body for a discrete, releasable push-in tube coupling device of the collet type comprises initially injection moulding the body about one or more rigid cores. Each rigid core is then withdrawn axially while the moulding is still in a plastic state whereby the outer, narrower bore portions of the body expand radially. The expanded portions are then radially contracted back to their as-moulded configuration using a jaw-like tool and finally the body is allowed to cool.

REFERENCES:
patent: 3987144 (1976-10-01), Nickold
patent: 4383966 (1983-05-01), Svetlik
patent: 4394343 (1983-07-01), Acda et al.
patent: 4428899 (1984-01-01), van Manen
patent: 4457886 (1984-07-01), Acda et al.
patent: 4709757 (1987-12-01), Bly
patent: 4873043 (1989-10-01), Meyers
patent: 5038455 (1991-08-01), Guest

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