Valves and valve actuation – Rotary valves – Ball valve
Patent
1989-05-22
1990-08-21
Joyce, Harold
Valves and valve actuation
Rotary valves
Ball valve
251115, 251228, 251293, 251298, F24F 1310
Patent
active
049496255
ABSTRACT:
A kit and assembly for making an air volume damper for use in the ductwork of a heating and ventilating system. The kit includes a long rod with a single bend at one end to form an L-shaped member, a hinge bracket for being riveted to a damper plate and receiving and captivating the bent section of the rod, a plate for being riveted to the outside of a duct and receiving the rod end through it, and a spring lock or latch member for being pop riveted to the plate and including a spring metal V-shaped section which receives the rod through two holes, one on each leg of the V-shaped section, and secures the rod by spring pressure. Compressing the legs of the V-shaped section together loosens the grip on the rod and allows it to be moved longitudinally to adjust a damper blade. The kit further includes press-together plastic hinge members for forming the hinge of the damper blade and pop rivets for securing the hinge bracket to the blade, the plate member to the outside of the ductwork and the lock member to the plate.
REFERENCES:
patent: 833554 (1906-10-01), Schwoll
patent: 2224208 (1940-12-01), Acer
patent: 2342877 (1944-02-01), Maage, Jr.
Advertisement for Ventlok brand Ball Joint Bracket No. 603 and Ventlok brand Damper Blade Bracket No. 600.
Joyce Harold
Kinney Richard G.
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