| Patents for F15B 13 - Details of servomotor systems (18,792) |
|---|
| 09/02/1980 | US4220074 Switching valve |
| 09/02/1980 | US4220073 Control valve for working machines |
| 08/26/1980 | US4219181 Fluid flow governing valve means |
| 08/26/1980 | US4218997 Actuator devices |
| 08/26/1980 | US4218957 Flow control valve |
| 08/12/1980 | US4216795 Position feedback attachment |
| 08/12/1980 | US4216702 Pressure sensing regenerative hydraulic system |
| 08/12/1980 | CA1083462A1 Shuttle valve |
| 08/05/1980 | US4215723 Fluid pressure servo valve assembly |
| 08/05/1980 | US4215720 Fluid control valve system |
| 08/05/1980 | US4215623 Hydraulic velocity and acceleration control system |
| 08/05/1980 | CA1083011A1 Priority system |
| 07/29/1980 | US4214446 Pressure-flow compensated hydraulic priority system providing signals controlling priority valve |
| 07/22/1980 | US4213300 Variable flow rate control with mechanical override for closed center valve |
| 07/15/1980 | US4212323 Power assist proportional remote controller |
| 07/08/1980 | US4211256 Circulating flow hydraulic pilot system |
| 07/01/1980 | US4210170 Anti-cavitation and overload relief valve for a hydraulic system |
| 06/25/1980 | EP0012743A1 Piezoelectric control valve |
| 06/24/1980 | US4209031 Positive control valve assembly |
| 06/17/1980 | CA1079836A1 Electrohydraulic control apparatus |
| 06/10/1980 | US4206689 Priority system |
| 06/10/1980 | US4206688 Overrunning load control for hydraulic motors |
| 06/03/1980 | US4205590 Positive feedback mechanism for servocontroller of fluid operated actuator |
| 05/27/1980 | US4204554 Fluid control means |
| 05/27/1980 | US4204460 Arrangement for influencing the operating quantity of a servo-motor |
| 05/27/1980 | US4204459 Combination check and flow control valve for hydraulic systems |
| 05/14/1980 | EP0011036A2 Control device for hydraulic mechanisms |
| 05/14/1980 | EP0010699A1 Fluid motor control circuit with fast-acting quick-drop valve |
| 05/13/1980 | US4202250 Programmed unbalanced load valve system |
| 05/06/1980 | US4201362 Electromagnetic pilot type valve |
| 05/06/1980 | US4201116 Electro-hydraulic proportional control servo valve |
| 05/06/1980 | US4201114 Electrohydraulic servovalve having removably attached feedback element |
| 05/06/1980 | US4201052 Power transmission |
| 04/30/1980 | EP0010116A1 Improvements in or relating to hydraulic actuator controls |
| 04/29/1980 | US4200118 Load responsive control valve |
| 04/29/1980 | US4200031 Locking cylinders |
| 04/22/1980 | US4199005 Load responsive control valve |
| 04/22/1980 | US4198822 Load responsive hydraulic system |
| 04/22/1980 | CA1076001A1 Fluid pressure control apparatus |
| 04/15/1980 | US4197878 Hydraulic valve |
| 04/15/1980 | US4197874 Pressure regulator and flow control valve with pre-exhaust vent means |
| 04/03/1980 | WO1980000606A1 Closed center draft control valve |
| 04/01/1980 | US4195552 Pressure reducer and flow control valve |
| 04/01/1980 | CA1074663A1 Electro-hydraulic proportional control servo valve |
| 04/01/1980 | CA1074662A1 Feathering valve assembly |
| 03/25/1980 | US4194719 Hydraulic control valve |
| 03/25/1980 | US4194532 Control valve with bypass means |
| 03/25/1980 | CA1074209A1 Lever with powdered accessory |
| 03/18/1980 | US4193425 Electrohydraulic servo-valve |
| 03/18/1980 | US4193423 Multiway valve |
| 03/18/1980 | US4193263 Fluid control system with individually variable flow control mechanism for each control section |
| 03/11/1980 | US4192346 Control valve |
| 03/11/1980 | US4192338 Hydraulic lock-out device |
| 03/11/1980 | US4192337 Priority flow valve |
| 03/11/1980 | US4192218 Fail-safe fluid control valve |
| 03/05/1980 | EP0008523A2 Improvements relating to hydraulic control systems |
| 03/04/1980 | US4191202 Polarity control valve |
| 03/04/1980 | US4191091 Feathering valve assembly |
| 02/26/1980 | US4190081 Electro-hydraulic systems |
| 02/21/1980 | WO1980000269A1 Assembly of control valves for pneumatic control at low pressure and working pressure |
| 02/19/1980 | US4188976 Multiple dental handpiece control system |
| 02/12/1980 | US4188011 Spool valve and pilot interface assembly |
| 02/12/1980 | US4187877 Compensated work port fluid valves |
| 02/12/1980 | US4187871 Pressure-biased shuttle valve |
| 02/12/1980 | CA1071482A1 Marine propulsion control system with engine idle boost |
| 02/06/1980 | EP0007712A1 Load control and holding valve |
| 02/05/1980 | US4186909 Fail-to-neutral module |
| 01/29/1980 | US4185660 Directional control valve |
| 01/22/1980 | US4184513 Multiple three and/or two way valve |
| 01/22/1980 | US4184512 Fluid distributing devices, particularly for hydraulic remote control |
| 01/22/1980 | US4184334 Closed center draft control valve |
| 01/09/1980 | EP0006117A1 Overrunning load control for hydraulic motors |
| 01/08/1980 | US4182534 Directional control valve system |
| 01/08/1980 | US4182369 Spool valve and pilot interface assembly |
| 01/08/1980 | US4182360 Pressure regulating and flow control valve |
| 01/01/1980 | US4181141 Pneumatic circuit arrangement |
| 01/01/1980 | CA1068998A Fail safe fluid power device |
| 12/25/1979 | US4180098 Load responsive fluid control valve |
| 12/25/1979 | US4179889 Control circuit for hydraulic cylinder and shaft assembly |
| 12/18/1979 | US4178962 Control valve with flow control means |
| 12/18/1979 | US4178837 Pneumatically operated actuator and method of making the same |
| 12/12/1979 | EP0005818A1 Hydraulically operated 3-way seat valve |
| 12/11/1979 | US4177840 Pressure regulation and flow control valve with combination needle and check valves |
| 12/04/1979 | US4176685 Valve arrangement for controlling the flow of hydraulic fluid to and from a user |
| 12/04/1979 | US4176521 Load responsive fluid control valves |
| 11/27/1979 | US4175589 Fluid pressure drive device |
| 11/27/1979 | US4175473 Fluid circuit |
| 11/20/1979 | US4174613 Load responsive valve assemblies |
| 11/15/1979 | WO1979000907A1 Control valve with bypass means |
| 11/13/1979 | US4173984 Pneumatic amplifier |
| 10/30/1979 | US4172582 Reverse differential holding valve |
| 10/30/1979 | CA1065229A1 Control device for the speed control of pneumatic and/or hydraulic working pistons |
| 10/17/1979 | EP0004540A2 High pressure hydraulic system |
| 10/09/1979 | US4170246 Pilot operator valve |
| 10/09/1979 | US4170214 Hydraulic valve module |
| 10/02/1979 | US4169490 Pilot operated four way valve |
| 10/02/1979 | CA1063483A1 Load responsive fluid control system |
| 09/19/1979 | EP0004165A1 Locking cylinders |
| 09/18/1979 | US4167892 Load check with mechanical venting means |
| 09/11/1979 | US4167200 Distribution device for a pneumatic installation |