Duct connector

Details Duct connector Duct connector

1982-01-25

1984-04-03

Callaghan, Thomas F.

Pipe joints or couplings

Nonmetal to metal

Internal member

285382, F16L 3300

Patent

active

044404263

ABSTRACT:
Apparatus for connecting flex duct to a sheet metal collar wherein piercing members are connected to the sheet metal collar. The piercing members are located adjacent one end of the sheet metal collar with the end of the piercing member next adjacent the end of the collar connected to the collar. The piercing members have an apical end that is oppositely disposed from the end connected to the sheet metal collar such that, when the flex duct is forced over the piercing member and then drawn in the opposite direction, the apical end pierces the scrim of the flex duct and the piercing member entraps the wire helix to secure the collar to the flex duct.

REFERENCES:
patent: 216851 (1879-06-01), Hofmann
patent: 567962 (1896-09-01), Cooper
patent: 589216 (1897-08-01), McKee
patent: 2807432 (1957-09-01), Parker et al.
patent: 2864378 (1958-12-01), Schneller et al.
patent: 3221746 (1965-12-01), Noble
patent: 3224794 (1965-12-01), Crissy
patent: 3233923 (1966-02-01), Raider et al.

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