Fluid-pressure and analogous brake systems – Load control – Responsive to fluid pressure spring
Patent
1978-09-05
1980-05-13
Halvosa, George E. A.
Fluid-pressure and analogous brake systems
Load control
Responsive to fluid pressure spring
137495, 188195, 251 80, 251321, 251335B, 251339, B60T 818
Patent
active
042025834
ABSTRACT:
A brake control apparatus for railway cars having sprung and unsprung portions is interposed between a brake pressure supply line and a brake cylinder line. A first chamber is connected to the brake pressure supply line and a second chamber is connected to the brake cylinder line. The chambers are abutted by surfaces having different cross-sectional areas of a diaphragm which is biased. A first valve responsive to positioning of the diaphragm, and a second valve responsive to positioning of a strut in a strut cylinder, effect first and second predetermined relationships between pressure drop in the brake pressure supply line and pressure drop in the brake cylinder line. The strut cylinder, mounted between the sprung and unsprung portions of the railway car, may be adapted to sense partially loaded as well as fully loaded or unloaded conditions.
REFERENCES:
patent: 345820 (1886-07-01), Westinghouse
patent: 413253 (1889-10-01), Haberkorn
patent: 563934 (1896-07-01), Lyers
patent: 600249 (1898-03-01), Parsells
patent: 710876 (1902-10-01), Mallinckrodt
patent: 720828 (1903-02-01), Mann
patent: 728485 (1903-05-01), Mallinckrodt
patent: 778044 (1904-12-01), Kent
patent: 831040 (1906-09-01), Custer
patent: 950642 (1910-03-01), Smith
patent: 1091596 (1914-03-01), Snyder
patent: 1148568 (1975-08-01), Bees
patent: 1230949 (1917-06-01), Turner et al.
patent: 1486872 (1924-03-01), Farmer
patent: 1602108 (1926-10-01), Haskell
patent: 1878993 (1932-09-01), Anderberg et al.
patent: 2026704 (1936-01-01), Petroe
patent: 2077922 (1937-04-01), Farmer
patent: 2109366 (1938-02-01), Cook et al.
patent: 2160210 (1939-05-01), Canetta et al.
patent: 2364927 (1944-12-01), Sudduth
patent: 2365650 (1944-12-01), Shaw et al.
patent: 2528143 (1950-10-01), Hewitt
patent: 2699973 (1955-01-01), Sexton et al.
patent: 3125379 (1964-03-01), Valentine
patent: 3228731 (1966-01-01), Valentine
patent: 3330604 (1967-07-01), Schultz et al.
patent: 3338638 (1967-08-01), Kirk et al.
patent: 3338639 (1967-08-01), Carothers
patent: 3341257 (1967-09-01), Weber
patent: 3376080 (1968-04-01), Kettering et al.
patent: 3460870 (1969-08-01), Kirk
patent: 3606485 (1971-09-01), Scott
patent: 3690420 (1972-09-01), Natschke
patent: 3727994 (1973-04-01), Keller
patent: 3883188 (1975-05-01), Wickham
patent: 4143923 (1979-03-01), King
Harding, Freight-Car Brake Equipment, International Textbooks Co., 1946, pp. 1-12, 40-42 and Figures.
Missouri Pacific Railway Company, Maintenance and Operation of Air and Dynamic Brakes Manual, 1967, pp. 3-7, 16-23, 50-55.
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