Patents
Sitemap › F15 - Fluid-pressure actuators; Hydraulics or pneumatics in general › F15B - Systems acting by means of fluids in general; Fluid-pressure actuators, e.g. servomotors; Details of fluid-pressure systems, not otherwise provided for › F15B 11 - Servomotor systems without provision for follow-up action
Patents for F15B 11 - Servomotor systems without provision for follow-up action (16,384)
11/1978
11/28/1978CA1043226A1 Variable underspeed system linkage
11/14/1978US4125059 Fluid pressure operable servo positioner
11/14/1978US4125039 Engine and transmission control system
11/07/1978US4123907 Hydraulic system having selective simultaneous pressure and flow control
10/1978
10/31/1978US4122865 Load responsive fluid control valve
10/31/1978US4122677 Load responsive valve assemblies
10/24/1978US4121501 Flow combining system for dual pumps
10/24/1978CA1040974A1 Actuator average pressure maintenance in closed loop system
10/24/1978CA1040972A1 Demand compensated hydraulic system with pilot line pressure-maintaining valve
10/17/1978US4120478 Gas-hydraulic pressure type actuator for pipeline valve
10/17/1978US4120234 Device for distributing a fluid flow in fixed proportions
10/17/1978US4120233 Hydraulic control system for at least two consumers
10/17/1978CA1040595A1 Hydraulic systems for two speed lifting
10/17/1978CA1040511A1 Dual pump hydraulic control system with predetermined flow crossover provision
10/10/1978CA1040063A1 Hydraulic control system
10/10/1978CA1040061A1 Fluid system of a work vehicle having fluid combining means and signal combining means
09/1978
09/26/1978US4116577 Flow sensing auxiliary pump by-pass valve
09/19/1978US4114516 Anti-cavitation and pressure modulating relief valve for controlling hydraulic cylinders
09/19/1978US4114513 Step-by-step controlled servomechanism
09/19/1978CA1038724A1 Control valve arrangement with a preconditioned relief valve and a flow force compensated valve spool
09/12/1978US4112825 Pressure-reducing device
09/12/1978US4112822 Pressure responsive sequencing device
09/12/1978US4112821 Fluid control system for multiple circuited work elements
09/12/1978US4112679 Load responsive fluid control valves
09/05/1978US4111226 Multiple function four poppet valve system
09/05/1978CA1037824A1 Apparatus for controlling work element operating pressures in a fluid system
08/1978
08/29/1978US4109561 Control valve arrangement with a preconditioned relief valve and a flow force compensated valve spool
08/29/1978CA1037357A1 Load controlled fluid system having parallel work elements
08/29/1978CA1037355A1 Swing flow supplemental travel for an excavator
08/29/1978CA1037348A1 Load check and bypass valve
08/29/1978CA1037346A1 Spring centered balanced resolver valve
08/22/1978US4107924 Pump upgrading system
08/22/1978US4107923 Load responsive valve assemblies
08/22/1978CA1036901A1 System for providing auxiliary power
08/22/1978CA1036900A1 Hydraulic system for electric lift trucks
08/22/1978CA1036895A1 Safety lock-out valve
08/15/1978CA1036459A1 System for operating hydraulic apparatus
08/08/1978US4104954 Hydraulic control system
07/1978
07/25/1978US4102250 Load check and bypass valve
07/25/1978US4102131 Integrated transmission-engine control
07/25/1978US4102128 Hand pump system for hydraulic motor
07/18/1978US4100937 Valve block
07/11/1978US4099450 Feed mechanism
07/11/1978US4099436 Apparatus for piercing sheet material
07/11/1978US4099379 Load responsive fluid control system
07/04/1978US4098286 Hydraulic control valve assembly
06/1978
06/27/1978US4096878 Valve group subassembly
06/20/1978USRE29673 Demand compensated hydraulic system with pilot line dither
06/20/1978USRE29672 Demand compensated hydraulic system with pressure amplifier
06/20/1978USRE29671 Demand compensated hydraulic system with flow sensitive device
06/20/1978US4095617 Control valves
06/13/1978US4094228 Fluid system having load pressure equalizing valve assemblies
06/06/1978US4093092 Load limiting device
05/1978
05/16/1978US4089346 Load responsive fluid control valves
05/16/1978US4089171 Four position valve assembly
05/16/1978US4089168 Load responsive fluid control valves
05/16/1978US4089167 Load responsive valve assemblies
05/16/1978US4089166 Automatic pump control system
05/09/1978US4088162 Inflatable signal device
05/09/1978US4088151 Cylinder locking apparatus
05/09/1978US4087968 Flow control valve for combining two dissimilar independent systems to a common pressure source
04/1978
04/25/1978US4085659 Control device for power tools
04/11/1978US4083290 Pneumatic adjusting mechanism
04/04/1978US4082111 Load responsive fluid control valve
03/1978
03/28/1978US4080994 Control arrangement for supplying pressure fluid to at least two hydraulically operated consumer devices
03/28/1978US4080983 Valve base for connecting hydraulic valves in hydraulic circuits
03/28/1978US4080873 Servoactuator
03/28/1978US4080872 Boost valve device
03/14/1978US4078681 Dual pump hydraulic control system with predetermined flow crossover provision
03/14/1978US4078574 Modular control valve
03/07/1978US4077484 Hydro-electrical priority valve and speed control circuit
02/1978
02/28/1978US4076210 Hydraulic valve
02/28/1978US4075928 Safety valve for fluid systems
02/28/1978US4075842 Load responsive fluid control system
02/21/1978US4074689 Spool valve distributor
02/21/1978US4074529 Load responsive system pump controls
02/21/1978CA1026648A1 Hydropneumatic devices
02/14/1978USRE29538 Load responsive fluid control valve
02/14/1978US4073141 Fluid control system with priority flow
02/14/1978US4073140 Connecting valve for reserve pump
02/07/1978US4072169 Hydraulic control system
02/07/1978US4072087 Digital positioner for remote actuation of a control valve
02/07/1978US4072013 Fluid pressure actuated operator cylinder with incorporated stress converter
01/1978
01/31/1978US4071106 Auxiliary hydrostatic wheel drive
01/24/1978US4069886 Auxiliary hydrostatic front wheel drive system
01/24/1978US4069746 Control arrangement for a hydraulic power transmission
01/17/1978US4068678 Valve for hydraulic systems
01/10/1978US4067394 Implement with automatic sequencing valve and system
01/10/1978US4067193 Combined hydrostatic transmission implement system
01/03/1978US4066103 Hydraulic regulator
01/03/1978US4066006 Flow regulating system
01/03/1978US4065921 Hydraulic control means, particularly for vehicle steering means
12/1977
12/13/1977US4062374 Hydraulic valves and hydraulic systems
12/13/1977US4062094 Apparatus for laterally stretching textile fabric and the like
12/06/1977US4061080 Position regulator
11/1977
11/29/1977US4060221 Double-acting hydraulic cylinder having two pistons arranged for coaxial movement relative thereto
11/15/1977US4058140 Load responsive fluid control valves
11/15/1977US4058139 Load responsive fluid control valves
11/15/1977US4058135 Compensated work port fluid valves and work port compensators
11/08/1977US4057073 Plural-service hydraulic system
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