Mechanical air failure brake

Details Mechanical air failure brake Mechanical air failure brake

1981-08-26

1984-02-07

Butler, Douglas C.

Brakes

Operators

Spring

74106, 74541, F16D 6524

Patent

active

044297718

ABSTRACT:
A brake mechanism (10) operable to maintain an air operable control drive mechanism (12) in position in the event of failure of the air supply is disclosed. A first rack section (22) is attached to a control lever (16) of the control drive mechanism (12) and is engagable in any operable position of the control lever (16) by a second arcuate rack section (24). A compression spring (62) acting on a toggle mechanism (28) biases the racks into engagement, and an air cylinder assembly (26) acting on the toggle mechanism (28) against the compression spring (62) maintains the second rack section (24) out of engagement with the first rack section (22) so long as the air supply to the air cylinder assembly (26) is maintained.

REFERENCES:
patent: 1370970 (1921-03-01), Jordan
patent: 1772755 (1930-08-01), Nicholson
patent: 2825426 (1958-03-01), Baxter, Jr.
patent: 3200907 (1965-08-01), Hansen
patent: 3309139 (1967-03-01), Turner et al.
patent: 3452623 (1969-07-01), Bastian
patent: 3661352 (1972-05-01), McFarlane
patent: 3972392 (1976-08-01), Johnson
patent: 4157745 (1979-06-01), Nelson
patent: 4174025 (1979-11-01), Ivachev
Product Engineering-1953 Annual Handbook, Nov. 1952, pp. F26-F27.

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