Westinghouse Air Brake Co
WestinghouActive Patents
0
Total Holdings
95
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5129605A | Rail vehicle positioning system | Expired / Lapsed | 1990-09-17 | 1992-07-14 | 13 | Details |
| US3526886A | Precision location detector | Expired / Lapsed | 1968-03-26 | 1970-09-01 | 0 | Details |
| US3512024A | Frameless permissible dynamoelectric machine | Expired / Lapsed | 1968-08-19 | 1970-05-12 | 0 | Details |
| US3506823A | Vehicle speed control system | Expired / Lapsed | 1967-12-21 | 1970-04-14 | 0 | Details |
| US3482643A | System to control and duplicate movement hydraulically | Expired / Lapsed | 1968-03-18 | 1969-12-09 | 0 | Details |
| US3398994A | Anti-skid wheel control system for railway cars | Expired / Lapsed | 1966-09-14 | 1968-08-27 | 2 | Details |
| US3335227A | Coordination of telephone and remote control transmission o… | Expired / Lapsed | 1963-10-16 | 1967-08-08 | 2 | Details |
| US3268662A | Coordination arrangement for telephone and remote control c… | Expired / Lapsed | 1962-05-24 | 1966-08-23 | 2 | Details |
| US3253126A | Automatic train identification system | Expired / Lapsed | 1961-06-08 | 1966-05-24 | 2 | Details |
| US3189885A | Coded detecting systems | Expired / Lapsed | 1961-07-10 | 1965-06-15 | 1 | Details |
| US3168269A | Track instruments | Expired / Lapsed | 1961-12-05 | 1965-02-02 | 1 | Details |
| US3130867A | Pipeline metering and product delivery control system | Expired / Lapsed | 1961-05-16 | 1964-04-28 | 1 | Details |
| US3117303A | Random access switching system | Expired / Lapsed | 1959-03-13 | 1964-01-07 | 2 | Details |
| US3072147A | Electro-pneumatic translator | Expired / Lapsed | 1961-09-29 | 1963-01-08 | 2 | Details |
| US3009056A | Vehicle weighing devices | Expired / Lapsed | 1956-06-01 | 1961-11-14 | 0 | Details |
| US3004149A | Railway track occupancy detectors | Expired / Lapsed | 1959-10-28 | 1961-10-10 | 0 | Details |
| US2998284A | Multiple-unit locomotive brake control equipment | Expired / Lapsed | 1959-08-24 | 1961-08-29 | 0 | Details |
| US2994564A | Apparatus for inhibiting spin of railway locomotive wheels … | Expired / Lapsed | 1959-07-02 | 1961-08-01 | 0 | Details |
| US2986427A | Variable load brake control apparatus for railway cars | Expired / Lapsed | 1959-01-28 | 1961-05-30 | 0 | Details |
| US2961151A | Rotary compressor | Expired / Lapsed | 1958-05-05 | 1960-11-22 | 0 | Details |
| US2951297A | Radar simulation systems | Expired / Lapsed | 1955-06-01 | 1960-09-06 | 0 | Details |
| US2910578A | Automatic control of railway classification yard switches | Expired / Lapsed | 1955-12-23 | 1959-10-27 | 0 | Details |
| US2870408A | Precise automatic multirange indicating voltmeter and/or ra… | Expired / Lapsed | 1955-04-25 | 1959-01-20 | 0 | Details |
| US2841745A | Electric speed governors | Expired / Lapsed | 1955-09-09 | 1958-07-01 | 0 | Details |
| US2818244A | Deceleration responsive apparatus | Expired / Lapsed | 1954-11-22 | 1957-12-31 | 0 | Details |
| US2800645A | Electric circuit integrity checking apparatus | Expired / Lapsed | 1955-01-27 | 1957-07-23 | 0 | Details |
| US2753550A | Vehicle reporting systems | Expired / Lapsed | 1951-03-03 | 1956-07-03 | 0 | Details |
| US2747611A | Control valve device | Expired / Lapsed | 1953-01-23 | 1956-05-29 | 0 | Details |
| US2736882A | Circuit integrity checking system | Expired / Lapsed | 1952-07-18 | 1956-02-28 | 0 | Details |
| US2721839A | Plating apparatus for electrical rectifiers | Expired / Lapsed | 1951-10-17 | 1955-10-25 | 2 | Details |
| US2709723A | Encased microphones | Expired / Lapsed | 1953-11-12 | 1955-05-31 | 0 | Details |
| US2699972A | Fluid pressure brake equipment | Expired / Lapsed | 1951-04-26 | 1955-01-18 | 0 | Details |
| US2692942A | Four-indication signal control system embodying polar biase… | Expired / Lapsed | 1950-12-30 | 1954-10-26 | 0 | Details |
| US2691867A | Fuel control system for turbojet engines | Expired / Lapsed | 1950-04-25 | 1954-10-19 | 0 | Details |
| US2690939A | Fluid pressure cylinder | Expired / Lapsed | 1950-12-20 | 1954-10-05 | 0 | Details |
| US2673292A | Vehicle reporting system | Expired / Lapsed | 1949-07-16 | 1954-03-23 | 0 | Details |
| US2670434A | Train describer system | Expired / Lapsed | 1951-06-26 | 1954-02-23 | 0 | Details |
| US2670433A | Cab signal apparatus | Expired / Lapsed | 1949-06-18 | 1954-02-23 | 0 | Details |
| US2649538A | Space intrusion detection system | Expired / Lapsed | 1949-10-13 | 1953-08-18 | 0 | Details |
| US2643370A | Electric circuit checking equipment | Expired / Lapsed | 1951-03-26 | 1953-06-23 | 0 | Details |
| US2637341A | Fluid pressure control valve device | Expired / Lapsed | 1949-07-27 | 1953-05-05 | 0 | Details |
| US2623163A | Speed responsive apparatus for detecting overspeed | Expired / Lapsed | 1947-11-25 | 1952-12-23 | 0 | Details |
| US2622142A | Automatic reservation system of the code type | Expired / Lapsed | 1950-07-22 | 1952-12-16 | 0 | Details |
| US2607023A | Electron tube circuit means responsive to a signal pulse of… | Expired / Lapsed | 1950-04-11 | 1952-08-12 | 0 | Details |
| US2605334A | Circuit integrity indicating system | Expired / Lapsed | 1951-05-29 | 1952-07-29 | 0 | Details |
| US2596013A | Transmitting and receiving circuits for inductive carrier c… | Expired / Lapsed | 1950-01-17 | 1952-05-06 | 0 | Details |
| US2588806A | Alternating current rectifier of the dry surface contact ty… | Expired / Lapsed | 1948-02-28 | 1952-03-11 | 0 | Details |
| US2585505A | Railway signaling system | Expired / Lapsed | 1947-02-20 | 1952-02-12 | 0 | Details |
| US2581510A | Electric relays | Expired / Lapsed | 1949-01-08 | 1952-01-08 | 0 | Details |
| US2581552A | Railway train describer | Expired / Lapsed | 1946-09-06 | 1952-01-08 | 0 | Details |
| US2580155A | Proximity detector employing microwaves | Expired / Lapsed | 1949-06-04 | 1951-12-25 | 0 | Details |
| US2576038A | Centralized traffic control system for the code control of … | Expired / Lapsed | 1946-11-09 | 1951-11-20 | 0 | Details |
| US2574783A | Rectifier assembly | Expired / Lapsed | 1949-06-24 | 1951-11-13 | 0 | Details |
| US2574774A | Remote-control system | Expired / Lapsed | 1949-04-30 | 1951-11-13 | 0 | Details |
| US2571973A | Annunciator | Expired / Lapsed | 1947-08-13 | 1951-10-16 | 0 | Details |
| US2496916A | Scotch block apparatus | Expired / Lapsed | 1947-01-14 | 1950-02-07 | 0 | Details |
| US2477836A | Control apparatus | Expired / Lapsed | 1944-08-30 | 1949-08-02 | 0 | Details |
| US2477819A | Temperature responsive apparatus | Expired / Lapsed | 1944-03-30 | 1949-08-02 | 0 | Details |
| US2473683A | Relay control system | Expired / Lapsed | 1945-06-23 | 1949-06-21 | 0 | Details |
| US2428452A | Ring type cylinder and piston | Expired / Lapsed | 1943-12-11 | 1947-10-07 | 0 | Details |
| US2426063A | Clutch operating mechanism | Expired / Lapsed | 1942-06-23 | 1947-08-19 | 0 | Details |
| US2411748A | Control device | Expired / Lapsed | 1944-05-20 | 1946-11-26 | 0 | Details |
| US2383278A | Fluid pressure control mechanism | Expired / Lapsed | 1942-10-29 | 1945-08-21 | 0 | Details |
| US2381211A | Electric decelerometer | Expired / Lapsed | 1942-06-27 | 1945-08-07 | 0 | Details |
| US2379289A | Control device | Expired / Lapsed | 1942-09-29 | 1945-06-26 | 0 | Details |
| US2337717A | Vehicle brake and propulsion control | Expired / Lapsed | 1941-11-29 | 1943-12-28 | 0 | Details |
| US2311851A | Check valve device | Expired / Lapsed | 1941-11-27 | 1943-02-23 | 0 | Details |
| US2279392A | Locomotive brake control system | Expired / Lapsed | 1940-12-31 | 1942-04-14 | 0 | Details |
| US2277135A | Compressor apparatus | Expired / Lapsed | 1940-04-29 | 1942-03-24 | 0 | Details |
| US2258820A | Brake control means | Expired / Lapsed | 1939-09-29 | 1941-10-14 | 0 | Details |
| US2256287A | Brake control means | Expired / Lapsed | 1940-04-30 | 1941-09-16 | 0 | Details |
| US2218616A | Brake means | Expired / Lapsed | 1939-06-30 | 1940-10-22 | 0 | Details |
| US2204815A | Load brake apparatus | Expired / Lapsed | 1939-03-31 | 1940-06-18 | 0 | Details |
| US2170249A | Automatic weighing device | Expired / Lapsed | 1937-05-22 | 1939-08-22 | 0 | Details |
| US2145567A | Electropneumatic brake | Expired / Lapsed | 1937-06-30 | 1939-01-31 | 0 | Details |
| US2110691A | Compressor valve | Expired / Lapsed | 1936-03-21 | 1938-03-08 | 0 | Details |
| US2088180A | Packing | Expired / Lapsed | 1934-11-03 | 1937-07-27 | 0 | Details |
| US2068370A | Inertia operated control device | Expired / Lapsed | 1934-02-27 | 1937-01-19 | 0 | Details |
| US2004669A | Packing cup | Expired / Lapsed | 1932-09-09 | 1935-06-11 | 0 | Details |
| US1991902A | Brake valve device | Expired / Lapsed | 1930-11-13 | 1935-02-19 | 0 | Details |
| US1956683A | Pipe coupling | Expired / Lapsed | 1931-11-19 | 1934-05-01 | 0 | Details |
| US1956691A | Quick action valve device | Expired / Lapsed | 1930-10-31 | 1934-05-01 | 0 | Details |
| US1935813A | Air strainer | Expired / Lapsed | 1931-08-15 | 1933-11-21 | 0 | Details |
| US1891668A | Multiple speed governor device | Expired / Lapsed | 1929-01-31 | 1932-12-20 | 0 | Details |
| US1887578A | Fluid pressure regulating valve device | Expired / Lapsed | 1930-08-13 | 1932-11-15 | 0 | Details |
| US1707241A | Fluid-pressure brake | Expired / Lapsed | 1927-06-04 | 1929-04-02 | 0 | Details |
| US1553614A | Motor-vehicle control mechanism | Expired / Lapsed | 1924-01-11 | 1925-09-15 | 0 | Details |
| US1530487A | Fluid-pressure brake | Expired / Lapsed | 1923-05-19 | 1925-03-24 | 0 | Details |
| US1501157A | Electric coupling for cars | Expired / Lapsed | 1919-07-05 | 1924-07-15 | 0 | Details |
| US1394057A | Electric coupling device | Expired / Lapsed | 1918-05-04 | 1921-10-18 | 0 | Details |
| US1214615A | Electrically-controlled brake. | Expired / Lapsed | 1914-10-03 | 1917-02-06 | 0 | Details |
| US1082295A | Electropneumatic control-valve mechanism. | Expired / Lapsed | 1910-06-29 | 1913-12-23 | 0 | Details |
| US870806A | Fluid-pressure brake. | Expired / Lapsed | 1907-04-12 | 1907-11-12 | 0 | Details |
| US851691A | Electric switch mechanism. | Expired / Lapsed | 1905-08-02 | 1907-04-30 | 0 | Details |
| US851277A | Fluid-pressure brake. | Expired / Lapsed | 1904-07-14 | 1907-04-23 | 0 | Details |