Barometric draft regulator

Details Barometric draft regulator Barometric draft regulator

1974-10-16

1976-03-02

Sprague, Kenneth W.

Furnaces

Draft regulators

Damper

236 45, F23L 1300, F23N 300

Patent

active

039410676

ABSTRACT:
An improved automatic draft regulator having significantly fewer parts than previous such devices, and comprising a frame adapted to fit into the flue pipe of a furnace, a gate pivotally mounted in the frame, and adjustable weight means pivotally connected to the gate and extending through it.

REFERENCES:
patent: 2460538 (1949-02-01), Schneider
patent: 2617371 (1952-11-01), Resek et al.
patent: 2721705 (1955-10-01), Patrick
patent: 2825506 (1958-03-01), Steinen
patent: 3206119 (1965-09-01), Steinen

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