Dynamically balanced exhaust pipe cap

Details Dynamically balanced exhaust pipe cap Dynamically balanced exhaust pipe cap

1987-02-27

1988-05-10

Joyce, Harold

F23L 1702

Patent

active

047427663

ABSTRACT:
A dynamically balanced exhaust pipe cap which includes an elongated tubular member having an upper end defined by an upper edge lying in a plane extending at an acute angle to the longitudinal axis of the tubular member. A closure flap assembly is pivotally secured to the upper end of the tubular member and includes a closure plate having a pair of balancing plates which extend downwardly from the closure plate on opposite sides of the tubular member. A pair of wind vanes are secured to the two balancing plates.

REFERENCES:
patent: 1291184 (1919-01-01), Schulz
patent: 1720789 (1929-07-01), Heusser
patent: 1944321 (1934-01-01), Huxter
patent: 2396876 (1946-03-01), Olsen
patent: 2494016 (1950-01-01), Taylor
patent: 2508615 (1950-05-01), Lukes
patent: 2983216 (1961-05-01), Stade et al.
patent: 3363537 (1968-01-01), De Penning
patent: 3446010 (1969-05-01), Hopkins
patent: 3523499 (1970-08-01), Bauerschmidt
patent: 3788072 (1974-01-01), Burger
patent: 3964376 (1976-06-01), Janke

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