Method of securing sheet metal to plastic

Details Method of securing sheet metal to plastic Method of securing sheet metal to plastic

1976-11-08

1978-02-28

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Assembling or joining

29432, 29252, 29270, 29798, B23P 1100

Patent

active

040757510

ABSTRACT:
A hand-held tool includes a pair of oppositely-directed punch heads coupled to a pneumatic cylinder and piston rod unit by an expansion linkage. A finger-actuated lever on the tool operates a valve to supply compressed air to the cylinder and piston rod unit which actuates the linkage and drives the punch heads apart. Each punch head is provided with a tri-facial point for forming a detent in metal adjacent plastic. Part of the metal is torn at the detent and embedded in the plastic to couple the two elements together. When the lever is released, air is routed to reverse the action of the cylinder and piston rod unit.

REFERENCES:
patent: 2311961 (1943-02-01), Parsons
patent: 2843725 (1958-07-01), Granberg
patent: 3238608 (1966-03-01), Davis
patent: 3815235 (1974-06-01), Marlar

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