Internal pliers

Details Internal pliers Internal pliers

1984-08-27

1985-11-26

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81318, 81326, 81395, 81402, B25B 714

Patent

active

045548480

ABSTRACT:
A pair of pliers is equipped with an expander unit that spreads the handles so that the jaws will forcibly grip objects from the inside. External teeth on the jaws aid in gripping.

REFERENCES:
patent: 1317399 (1919-09-01), Stoffel
patent: 1388744 (1921-08-01), Morrissey
patent: 1534066 (1925-04-01), Larkey
patent: 1676775 (1928-07-01), Doherty
patent: 2740196 (1956-04-01), Ehinger
patent: 2842996 (1958-07-01), Coslow et al.

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