Apparatus for reinforcing a duct

Details Apparatus for reinforcing a duct Apparatus for reinforcing a duct

1979-01-05

1980-12-09

Aegerter, Richard E.

Pipes and tubular conduits

Reinforced

138 99, 138149, 138153, 138178, F16L 914

Patent

active

042379407

ABSTRACT:
A duct reinforcement and a method for building the reinforcement including a special tool for use in a preferred method are disclosed. The duct reinforcement includes a support washer on each of two opposing sides of the duct to be supported and a stiff wire extending through the sides of the ducts and both washers. The portion of the wire protruding beyond each support washer on the outside of the duct forms a hook with a tip of the wire substantially opposed to the outer face of the respective support washer. A preferred form of the support washer forms a volcano-shaped contour surrounding the washer hole on the outer face so that the tip of the wire makes contact with the washer inside the crest of the volcano-shaped contour. A preferred arrangement includes a rubbery seal between each support washer and the respective side of the duct to prevent leakage from the duct.

REFERENCES:
patent: 564251 (1896-07-01), Long
patent: 735078 (1903-08-01), Felsing et al.
patent: 1285210 (1918-11-01), Jones
patent: 1453485 (1929-05-01), Vosburgh
patent: 1861102 (1932-05-01), Teer
patent: 2007179 (1935-07-01), Bullis
patent: 2020767 (1935-11-01), Bullis et al.

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