Allis Chalmers Corp
Allis ChalActive Patents
0
Total Holdings
142
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4229799A | Method and apparatus for measuring area traversed by vehicu… | Expired / Lapsed | 1979-04-09 | 1980-10-21 | 18 | Details |
| US4048554A | Variable frequency, variable voltage power supply | Expired / Lapsed | 1976-11-22 | 1977-09-13 | 55 | Details |
| US4006322A | Auxiliary interlock switch with interchangeable and reversi… | Expired / Lapsed | 1975-09-22 | 1977-02-01 | 18 | Details |
| US3883709A | Vacuum capacitor switch having grounding switch means | Expired / Lapsed | 1973-12-07 | 1975-05-13 | 6 | Details |
| US3792390A | Magnetic actuator device | Expired / Lapsed | 1973-05-31 | 1974-02-19 | 22 | Details |
| US3773268A | Apparatus for and method of controlling feed of grinding me… | Expired / Lapsed | 1972-02-25 | 1973-11-20 | 7 | Details |
| US3671696A | Vacuum interrupter shunted with mechanical switch | Expired / Lapsed | 1970-11-16 | 1972-06-20 | 2 | Details |
| US3640276A | Apparatus for making intravenous or intra-arterial injectio… | Expired / Lapsed | 1970-01-09 | 1972-02-08 | 4 | Details |
| US3584276A | Vehicle electric motor drive system | Expired / Lapsed | 1969-05-13 | 1971-06-08 | 100 | Details |
| US3572759A | Latch control means | Expired / Lapsed | 1968-12-23 | 1971-03-30 | 11 | Details |
| US3485940A | Post type modular insulator containing optical and electric… | Expired / Lapsed | 1967-12-26 | 1969-12-23 | 0 | Details |
| US3405352A | Square wave switching circuit having sharp turn-on and turn… | Expired / Lapsed | 1965-10-21 | 1968-10-08 | 0 | Details |
| US3346811A | Means for sensing conditions in high potential region and f… | Expired / Lapsed | 1964-02-24 | 1967-10-10 | 2 | Details |
| US3344282A | Voltage level sensing means for standby power supply systems | Expired / Lapsed | 1964-04-06 | 1967-09-26 | 2 | Details |
| US3330998A | Controlled rectifier control means | Expired / Lapsed | 1964-07-31 | 1967-07-11 | 2 | Details |
| US3293530A | Electrical power conversion system having output control me… | Expired / Lapsed | 1963-10-03 | 1966-12-20 | 2 | Details |
| US3269160A | Automatic gauge control with update | Expired / Lapsed | 1963-08-29 | 1966-08-30 | 2 | Details |
| US3265933A | Control circuit for operating circuit interrupter at a zero… | Expired / Lapsed | 1963-10-24 | 1966-08-09 | 2 | Details |
| US3263767A | Vehicle wheel speed control mechanism | Expired / Lapsed | 1964-06-23 | 1966-08-02 | 2 | Details |
| US3236358A | Means for controlling conveyer | Expired / Lapsed | 1961-05-19 | 1966-02-22 | 2 | Details |
| US3214677A | Circuit for controlling transient voltages to prevent prema… | Expired / Lapsed | 1961-09-11 | 1965-10-26 | 2 | Details |
| US3194993A | Encapsulated dynamoelectric machines | Expired / Lapsed | 1960-10-03 | 1965-07-13 | 0 | Details |
| US3067338A | Cascaded-transistor switch having diode thermal-runaway pro… | Expired / Lapsed | 1958-12-29 | 1962-12-04 | 0 | Details |
| US3058558A | Coupling mechanism | Expired / Lapsed | 1959-09-01 | 1962-10-16 | 0 | Details |
| US3045135A | Synchronous induction motor | Expired / Lapsed | 1959-12-31 | 1962-07-17 | 0 | Details |
| US3038456A | Self-locking nozzle gasket | Expired / Lapsed | 1961-01-27 | 1962-06-12 | 0 | Details |
| US3021515A | Fault indicator | Expired / Lapsed | 1957-11-27 | 1962-02-13 | 0 | Details |
| US2996126A | Implement connection for tractors | Expired / Lapsed | 1953-08-13 | 1961-08-15 | 0 | Details |
| FR1218165A | Hydraulic lift control device in particular for agricultura… | Expired / Lapsed | 1959-03-03 | 1960-05-09 | 0 | Details |
| US2933838A | Automatic depth control for an implement | Expired / Lapsed | 1957-04-29 | 1960-04-26 | 0 | Details |
| US2928423A | Pressure relief and valve spool positioning mechanism | Expired / Lapsed | 1957-12-13 | 1960-03-15 | 0 | Details |
| US2874642A | Adjustable bypass valve | Expired / Lapsed | 1955-10-05 | 1959-02-24 | 0 | Details |
| US2857565A | Voltage regulating control system selectively responsive to… | Expired / Lapsed | 1953-08-03 | 1958-10-21 | 0 | Details |
| US2834277A | Quick hitch system | Expired / Lapsed | 1953-08-13 | 1958-05-13 | 0 | Details |
| US2809078A | Bearing assembly operable with small temperature differenti… | Expired / Lapsed | 1955-03-07 | 1957-10-08 | 0 | Details |
| US2807771A | Rectifier disconnecting system responsive to inoperativenes… | Expired / Lapsed | 1954-12-28 | 1957-09-24 | 0 | Details |
| US2799099A | Moldboard mounting for motor graders | Expired / Lapsed | 1954-07-13 | 1957-07-16 | 0 | Details |
| US2765378A | Circuit breaker with hydraulic motor controlled by a hydrau… | Expired / Lapsed | 1953-05-26 | 1956-10-02 | 0 | Details |
| US2762240A | Differential pinion mounting | Expired / Lapsed | 1954-09-28 | 1956-09-11 | 0 | Details |
| US2750274A | Method of heating gas permeable material with a lean gas mi… | Expired / Lapsed | 1953-07-02 | 1956-06-12 | 2 | Details |
| US2742255A | Hinged valve with lost motion flap mounting | Expired / Lapsed | 1952-09-15 | 1956-04-17 | 0 | Details |
| US2730029A | Tool mounting and adjusting mechanism for tractors | Expired / Lapsed | 1952-07-16 | 1956-01-10 | 0 | Details |
| US2723613A | Drawbar mounting for agricultural implements | Expired / Lapsed | 1952-05-01 | 1955-11-15 | 0 | Details |
| US2722654A | Regulating system utilizing a saturable reactor having nega… | Expired / Lapsed | 1950-12-11 | 1955-11-01 | 0 | Details |
| US2688908A | Implement hitch for tractors | Expired / Lapsed | 1949-08-24 | 1954-09-14 | 0 | Details |
| US2683403A | Tractor mounted lister or bedder | Expired / Lapsed | 1949-07-13 | 1954-07-13 | 0 | Details |
| US2679199A | Power lift means affording depth regulation of tractor prop… | Expired / Lapsed | 1948-05-26 | 1954-05-25 | 0 | Details |
| US2674125A | Speed-torque curve tracing device | Expired / Lapsed | 1951-07-14 | 1954-04-06 | 0 | Details |
| US2664708A | Hydraulic control system | Expired / Lapsed | 1950-03-07 | 1954-01-05 | 0 | Details |
| US2662130A | Dial switch with stationary blades having cutback edges | Expired / Lapsed | 1952-06-30 | 1953-12-08 | 0 | Details |
| US2659040A | Electric control system for dynamoelectric machines with re… | Expired / Lapsed | 1951-06-01 | 1953-11-10 | 0 | Details |
| US2643657A | Corn snapping and husking rolls | Expired / Lapsed | 1948-01-12 | 1953-06-30 | 0 | Details |
| US2641738A | Electric regulator responsive to phase difference of two cu… | Expired / Lapsed | 1951-01-20 | 1953-06-09 | 0 | Details |
| US2629462A | Hydraulic shock absorber | Expired / Lapsed | 1948-05-06 | 1953-02-24 | 0 | Details |
| US2611307A | Control linkage for hydraulic draft regulation of vehicle p… | Expired / Lapsed | 1948-08-23 | 1952-09-23 | 0 | Details |
| US2611319A | Pump | Expired / Lapsed | 1948-05-12 | 1952-09-23 | 0 | Details |
| US2604750A | Corn harvester | Expired / Lapsed | 1950-11-25 | 1952-07-29 | 0 | Details |
| US2605076A | Control valve for grain dividers | Expired / Lapsed | 1950-04-13 | 1952-07-29 | 0 | Details |
| US2603063A | Combustion turbine system | Expired / Lapsed | 1950-05-19 | 1952-07-15 | 0 | Details |
| US2594015A | Control system for dynamoelectric machine utilizing a magne… | Expired / Lapsed | 1950-11-28 | 1952-04-22 | 0 | Details |
| US2587711A | Tractor seat | Expired / Lapsed | 1948-04-23 | 1952-03-04 | 0 | Details |
| US2580480A | Farm tractor | Expired / Lapsed | 1948-04-02 | 1952-01-01 | 0 | Details |
| US2551022A | Electric protective system with inrush current compensation | Expired / Lapsed | 1945-11-30 | 1951-05-01 | 0 | Details |
| US2477848A | Delayed control system for cathode-ray oscillographs | Expired / Lapsed | 1946-01-12 | 1949-08-02 | 0 | Details |
| US2470655A | Cooling and lubrication of compressors | Expired / Lapsed | 1944-06-12 | 1949-05-17 | 0 | Details |
| US2469687A | Corn harvester husking roll with resilient section | Expired / Lapsed | 1945-04-07 | 1949-05-10 | 0 | Details |
| US2467768A | Control system | Expired / Lapsed | 1944-01-27 | 1949-04-19 | 0 | Details |
| US2465099A | Propulsion means comprising an internal-combustion engine a… | Expired / Lapsed | 1943-11-20 | 1949-03-22 | 0 | Details |
| US2453750A | Endless track mechanism | Expired / Lapsed | 1944-05-01 | 1948-11-16 | 0 | Details |
| US2444279A | Steering by driving control mechanism | Expired / Lapsed | 1945-09-08 | 1948-06-29 | 0 | Details |
| US2434321A | Method of welding | Expired / Lapsed | 1944-03-08 | 1948-01-13 | 0 | Details |
| US2424142A | Solar salt water distilling apparatus | Expired / Lapsed | 1943-12-01 | 1947-07-15 | 0 | Details |
| US2414814A | Bearing support | Expired / Lapsed | 1942-11-23 | 1947-01-28 | 0 | Details |
| US2411181A | Combustion turbine burner | Expired / Lapsed | 1943-04-10 | 1946-11-19 | 0 | Details |
| US2392281A | Method of making welded blade structures | Expired / Lapsed | 1942-02-19 | 1946-01-01 | 0 | Details |
| US2353929A | Combustion turbine | Expired / Lapsed | 1940-01-29 | 1944-07-18 | 0 | Details |
| US2350310A | Blade shrouding | Expired / Lapsed | 1942-11-16 | 1944-05-30 | 0 | Details |
| US2350125A | Blade and shroud structure | Expired / Lapsed | 1942-02-14 | 1944-05-30 | 0 | Details |
| US2346460A | Switchgear | Expired / Lapsed | 1940-08-01 | 1944-04-11 | 0 | Details |
| US2339939A | Control system | Expired / Lapsed | 1940-07-03 | 1944-01-25 | 0 | Details |
| US2332629A | Pump for power lifted implements | Expired / Lapsed | 1941-08-15 | 1943-10-26 | 0 | Details |
| US2315869A | Control system and method | Expired / Lapsed | 1941-11-21 | 1943-04-06 | 0 | Details |
| US2305937A | Regulating system | Expired / Lapsed | 1940-07-29 | 1942-12-22 | 0 | Details |
| US2303295A | Gas turbine drive | Expired / Lapsed | 1941-02-20 | 1942-11-24 | 0 | Details |
| US2287438A | Brake mechanism | Expired / Lapsed | 1941-09-29 | 1942-06-23 | 0 | Details |
| US2283121A | Light responsive control system | Expired / Lapsed | 1940-07-31 | 1942-05-12 | 0 | Details |
| US2283036A | Reel control | Expired / Lapsed | 1939-04-15 | 1942-05-12 | 0 | Details |
| US2265940A | Centrifugal pump | Expired / Lapsed | 1940-03-15 | 1941-12-09 | 0 | Details |
| US2262453A | Harvester-thresher | Expired / Lapsed | 1935-07-01 | 1941-11-11 | 0 | Details |
| US2254360A | Tractor rear assembly | Expired / Lapsed | 1940-02-21 | 1941-09-02 | 0 | Details |
| US2240743A | Apparatus for attaching turbine blades | Expired / Lapsed | 1940-07-15 | 1941-05-06 | 0 | Details |
| US2241330A | Compressor control system | Expired / Lapsed | 1939-11-01 | 1941-05-06 | 0 | Details |
| US2240800A | Remote control system | Expired / Lapsed | 1939-06-10 | 1941-05-06 | 0 | Details |
| US2240742A | Turbine blade attachment and method and apparatus therefor | Expired / Lapsed | 1937-11-26 | 1941-05-06 | 0 | Details |
| US2228153A | Control system for prime movers | Expired / Lapsed | 1940-03-07 | 1941-01-07 | 0 | Details |
| US2177109A | Voltage regulator | Expired / Lapsed | 1935-04-29 | 1939-10-24 | 0 | Details |
| US2174176A | Aural stroboscope | Expired / Lapsed | 1936-09-23 | 1939-09-26 | 0 | Details |
| US2164792A | Electric valve control system | Expired / Lapsed | 1935-07-01 | 1939-07-04 | 0 | Details |
| US2124274A | Pilot valve | Expired / Lapsed | 1936-07-29 | 1938-07-19 | 0 | Details |
| US2094986A | Electric current responsive device | Expired / Lapsed | 1930-08-27 | 1937-10-05 | 0 | Details |
| US2067479A | Blower control system | Expired / Lapsed | 1935-02-08 | 1937-01-12 | 0 | Details |
| US2060322A | Power transmission mechanism | Expired / Lapsed | 1934-03-29 | 1936-11-10 | 0 | Details |
| US2018672A | Surge diverter | Expired / Lapsed | 1933-03-13 | 1935-10-29 | 0 | Details |
| US2017026A | Acid pump | Expired / Lapsed | 1933-10-28 | 1935-10-08 | 0 | Details |
| US2000874A | Pump unit | Expired / Lapsed | 1933-06-14 | 1935-05-07 | 0 | Details |
| US2000692A | Method of uniting nickel chrome steel turbine blades | Expired / Lapsed | 1930-05-09 | 1935-05-07 | 0 | Details |
| US1989891A | Fuel injection device | Expired / Lapsed | 1926-08-09 | 1935-02-05 | 0 | Details |
| US1988296A | Pump valve control | Expired / Lapsed | 1932-11-05 | 1935-01-15 | 0 | Details |
| US1934628A | Liquid seal for rotary apparatus | Expired / Lapsed | 1930-08-25 | 1933-11-07 | 0 | Details |
| US1914918A | Machine drive | Expired / Lapsed | 1931-04-09 | 1933-06-20 | 0 | Details |
| US1889514A | Switch | Expired / Lapsed | 1930-01-27 | 1932-11-29 | 0 | Details |
| US1860618A | Hydraulic turbine | Expired / Lapsed | 1930-08-08 | 1932-05-31 | 0 | Details |
| US1823702A | Hydraulic machine | Expired / Lapsed | 1928-05-24 | 1931-09-15 | 0 | Details |
| US1804180A | Motor control system | Expired / Lapsed | 1925-04-13 | 1931-05-05 | 0 | Details |
| US1703064A | Power installation | Expired / Lapsed | 1922-09-21 | 1929-02-19 | 0 | Details |
| US1685751A | Bearing | Expired / Lapsed | 1925-01-19 | 1928-09-25 | 0 | Details |
| US1671069A | Valve | Expired / Lapsed | 1924-01-21 | 1928-05-22 | 0 | Details |
| US1607828A | Apparatus for manufacturing pulp | Expired / Lapsed | 1925-08-21 | 1926-11-23 | 0 | Details |
| US1574422A | Dust collector or filter | Expired / Lapsed | 1922-02-20 | 1926-02-23 | 0 | Details |
| US1574460A | Flow indicator | Expired / Lapsed | 1920-01-02 | 1926-02-23 | 0 | Details |
| US1505853A | Electrical governing apparatus | Expired / Lapsed | 1920-10-09 | 1924-08-19 | 0 | Details |
| US1504736A | Means for protecting turbine surfaces | Expired / Lapsed | 1920-05-06 | 1924-08-12 | 0 | Details |
| US1476985A | Pump valve | Expired / Lapsed | 1919-11-01 | 1923-12-11 | 0 | Details |
| US1389154A | Method of fastening | Expired / Lapsed | 1917-12-05 | 1921-08-30 | 0 | Details |
| US1218216A | Connector. | Expired / Lapsed | 1912-05-17 | 1917-03-06 | 0 | Details |
| US1190681A | Pressure-equalizer for valves. | Expired / Lapsed | 1914-11-30 | 1916-07-11 | 0 | Details |
| US1178772A | Electrical measuring instrument. | Expired / Lapsed | 1911-02-23 | 1916-04-11 | 0 | Details |
| US1157957A | Fluid-pressure regulator. | Expired / Lapsed | 1912-12-23 | 1915-10-26 | 0 | Details |
| US1132478A | System of electrical distribution. | Expired / Lapsed | 1910-09-16 | 1915-03-16 | 0 | Details |
| US1111498A | Turbo-blower. | Expired / Lapsed | 1909-12-24 | 1914-09-22 | 0 | Details |
| US1061006A | Gas-pressor. | Expired / Lapsed | 1910-01-03 | 1913-05-06 | 0 | Details |
| US1049789A | Filter. | Expired / Lapsed | 1911-05-29 | 1913-01-07 | 0 | Details |
| US1044444A | Fluid-pressure regulator. | Expired / Lapsed | 1912-06-27 | 1912-11-12 | 0 | Details |
| US1039398A | Process of producing gas. | Expired / Lapsed | 1910-02-14 | 1912-09-24 | 0 | Details |
| US1030568A | Circuit-breaker. | Expired / Lapsed | 1911-02-01 | 1912-06-25 | 0 | Details |
| US1029007A | Frequency-responsive device. | Expired / Lapsed | 1910-03-12 | 1912-06-11 | 0 | Details |
| US1017257A | System of motor control. | Expired / Lapsed | 1907-01-31 | 1912-02-13 | 0 | Details |
| US1011944A | Induction-motor. | Expired / Lapsed | 1911-10-06 | 1911-12-19 | 0 | Details |
| US987698A | Multiple-voltage controller. | Expired / Lapsed | 1908-10-05 | 1911-03-28 | 0 | Details |
| US925293A | Cable-connector. | Expired / Lapsed | 1906-11-30 | 1909-06-15 | 0 | Details |
| US915214A | Nozzle. | Expired / Lapsed | 1906-02-07 | 1909-03-16 | 0 | Details |
| US904522A | Cable-connector. | Expired / Lapsed | 1906-08-20 | 1908-11-24 | 0 | Details |