Tool for coupling sections of air conditioning ducts

Details Tool for coupling sections of air conditioning ducts Tool for coupling sections of air conditioning ducts

1986-05-30

1987-12-22

Spruill, Robert L.

Metal deforming

By tool-couple embodying nonplanar tool-face

With complementary tool-faces

72412, 292435, 81426, B21D 706

Patent

active

047139595

ABSTRACT:
A tool is especialy adapted for use in fastening together sections of ducts used to conduit air for heating and air conditioning. The tool is comprised of a pair of tongs having opposing handles and jaws and hinged to rotate relative to each other about a transverse axis. The jaws are specially formed to facilitate insertion of angle shaped corner fasteners into the transverse, marginal flanges which project from the ends of conventional air conditioning duct sections and to bend over and collapse the peripheral lips on the marginal flanges of the duct sections back onto the legs of the reinforcement angles.

REFERENCES:
patent: 1435150 (1922-11-01), Carpenter
patent: 1751155 (1930-03-01), Heny et al.
patent: 3178926 (1965-04-01), Logan
patent: 4318211 (1982-03-01), Hoskinson
patent: 4403497 (1983-09-01), Matteucci
patent: 4640117 (1987-02-01), Anderson et al.

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