Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 301 - 350 out of 3,127

Document Document Title
WO2001029433A3
The invention relates to a device for dynamically monitoring pressure differences in at least two pressure pipes (207, 211), preferably in safety valves of pneumatically operated consumers. The inventive device is characterized in that, ...  
WO2001014750A3
The invention relates to a drive (10) for a control valve, comprising a drive force unit (12), a yoke (14) for connecting to a valve (16) in a fixed manner, a drive spindle (18) for transmitting the movement of the drive force unit to th...  
WO/2001/065120A2
A hydraulic servo motor which includes a plurality of digitally latched poppet valves (42, 44) that control the spool position of a spool valve (20). The poppet valves are controlled by a controller (56) which perfoms a servo routine tha...  
WO/2001/064464A1
The invention relates to a hydraulic anti-roll system, in particular for a chassis of a motor vehicle. Said system has a tank for hydraulic fluid and a pump which are connected to front and rear-axle actuators via corresponding hydraulic...  
WO/2001/059307A1
The invention concerns a fluidic system for safety-oriented control, in addition to a fluidic actuator, a local control device for a fluidic system and a software module for a local control device of a fluidic system. The invention also ...  
WO/2001/054960A1
An electro-hydraulic actuator system (10 or 140) includes a hydraulic actuator (27) having a pair of fluid filled chambers (29, 30) and being operable to provide an actuator output (12) as a function of fluid pressures at the chambers. A...  
WO2001029429A3
The invention relates to a safety valve (10) for consumers driven by compressed air, comprising two directional valves (16a, 16b) connected in parallel, each of which can be operated by a pilot valve (26a, 26b) allocated thereto. The two...  
WO/2001/029430A1
A pipe breakage control valve device (100) having an input/output port (1) connected to a bottom port of a hydraulic cylinder (102) and an input/output port (2) connected to one of the actuator ports of a control valve (103) through an a...  
WO/2001/029429A2
The invention relates to a safety valve (10) for consumers driven by compressed air, comprising two directional valves (16a, 16b) connected in parallel, each of which can be operated by a pilot valve (26a, 26b) allocated thereto. The two...  
WO/2001/029433A2
The invention relates to a device for dynamically monitoring pressure differences in at least two pressure pipes (207, 211), preferably in safety valves of pneumatically operated consumers. The inventive device is characterized in that, ...  
WO/2001/014750A2
The invention relates to a drive (10) for a control valve, comprising a drive force unit (12), a yoke (14) for connecting to a valve (16) in a fixed manner, a drive spindle (18) for transmitting the movement of the drive force unit to th...  
WO/2001/012997A2
The invention relates to a hydraulic valve arrangement for operating a hydraulic consumer (80). Said arrangement is connected to a hydraulic pressure source (40) by means of at least one pressure connection (30), to the hydraulic consume...  
WO/2001/012948A1
The invention relates to the emergency actuation of control systems for the shut down and/or isolation of a fluid circuit containing at least one flexible pipe (42, 44, 46). The flexible pipe (42, 44, 46) being connected to at least one ...  
WO/2001/002735A1
The invention relates to a switching device for a machine, especially a digger, comprising at least one supply connection and one useful connection (P, P') in addition to at least one hydraulic accumulator (10). An on-off valve (12) is a...  
WO/2000/071900A1
The invention concerns a hydraulic line connection with a supply connection (2) having a pressure line and a return line, each ending at a connection valve (4, 5), and with a safety valve (8) in a line between the pressure line and a con...  
WO/2000/068610A1
A duplicate two-channel pneumatic control system enables a flow of compressed air to be delivered to a consumer by applying two control signals essentially simultaneously. The system includes a set-up of pneumatic valves (21, 22; 21', 22...  
WO2000018382A3
Hydraulic directional valve including a control piston (main piston, 3) which can be moved against the force of a spring (main spring, 18) by the tappet of a magnet (12) from its first position (closing position) to its second position (...  
WO/2000/034667A1
The invention relates to a directional valve with a movable valve piston (5). Said valve piston separates two pressure chambers (6, 8) in the interior of the valve housing from each other which chambers can be impinged upon by a control ...  
WO/2000/026060A1
The present invention incorporates a fluid pressure sensing switch (18) in fluid communication with a hydraulic fluid outlet (12) of a hydraulic pump (10) driving a platform lift (4). The pressure switch is calibrated to activate at a pu...  
WO/2000/018382A2
Hydraulic directional valve including a control piston (main piston, 3) which can be moved against the force of a spring (main spring, 18) by the tappet of a magnet (12) from its first position (closing position) to its second position (...  
WO/2000/014413A1
A protection device for controlling the motion of a pneumatic actuator (3), comprising at least one elongated cylinder (6) provided with a piston (4), dividing the cylinder (6) into a first chamber (5a) and a second chamber (5b), an actu...  
WO/1999/056053A1
A control system particularly for use with pipeline plugs and other arrangements which are remotely controlled, and which require to be retrievable in the event of a failure, the pipeline plug including an anchoring/sealing means, the co...  
WO1999036714A9
A voting solenoid arrangement (10) is provided which operates in a "2 out of 3" manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while also enabling on-line testing of each solenoid ...  
WO1999036714A3
A voting solenoid arrangement (10) is provided which operates in a "2 out of 3" manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while also enabling on-line testing of each solenoid ...  
WO/1999/036714A2
A voting solenoid arrangement (10) is provided which operates in a '2 out of 3' manner to provide relatively high safety, low spurious tripping and a relatively low installation cost, while also enabling on-line testing of each solenoid ...  
WO/1999/011939A1
The invention concerns a protective circuit provided with additional switching function by exciting an electric adjusting component. The excitation signals to said adjusting component (1) are guided, between a first removable plug-type c...  
WO/1999/010672A1
A fail-safe closure system comprises two control valves (122, 124), a piston actuator (126), a solenoid (147) for operating the control valves and an accumulator module (150). Supply pressurized fluid is applied to an opening chamber of ...  
WO/1998/053213A1
The invention relates to an actuation device for a hydraulically controlled actuator (10), specially for the emergency operation thereof, comprising a housing (14) with a fluid container (16) which can be connected to the actuator (10) v...  
WO/1998/052804A1
The invention relates to a hydraulic control device, specially for a fork lift, comprising a hydraulic consumer (55) used to bleed a spring-loaded brake (56), valves (46, 47, 57, 65) to supply pressure medium from a pressure line (11) to...  
WO/1998/045603A1
The invention relates to a hydraulic control device, comprising a directional valve (13), a hydraulic pump (18), and a built-in two-way valve (52) configured as a seat valve. The directional valve (13) is connected to an inlet line (34) ...  
WO/1998/040630A1
The invention relates to a hydraulic unit for feeding and controlling lifts, hydraulic platforms, loading tailboards, gates, etc. driven by means of hydraulic cylinders. Said unit comprises a hydraulic pump (4) driven by a motor (2) via ...  
WO/1998/023866A1
The present invention provides an actuator controlled by an electro-hydraulic servovalve (12) with a failfixed operation upon the loss of electrical power to the servovalve. A lock valve (69) has apertures therethrough with friction pads...  
WO/1998/006946A1
An apparatus for diagnosing failure of hydraulic pumps for a work machine, which apparatus is inexpensive and capable of surely specifying a faulty hydraulic pump or pumps. Pressure sensors (61-64) are provided on lines (30, 40) leading ...  
WO/1998/000200A1
A pump system for pumping liquids comprises a submerged pump, which is connected to a pressure pipeline and can be driven by means of a hydraulic drive comprising a hydraulic pump and a hydraulic motor, which are connected to one another...  
WO/1997/038228A1
The invention relates to a safety circuit for controlling a hydraulic drive (10) with a drive part (12) movable in at least two different directions of movement and controllable for any movement by a control switching circuit. A safety c...  
WO/1997/028318A1
A hydraulic circuit capable of locking and unlocking a plurality of actuators simultaneously, whether a control valve for fluid supply control of a hydraulic actuator is of pilot operated type or other type. The circuit comprises a chann...  
WO/1997/027995A1
The system is intended to control the time duration of the soft pushing action carried out when engaging the clutch and/or the brakes of hydraulic brakes-clutches to actuate presses and similar machines, as well as to cancel, at a predet...  
WO/1997/009553A1
A manifold assembly (10) for operating a safety relief valve (12) includes a manifold block (60) having a block inlet port (230), a block dome pressure port (232), and a pair of control cavities (220 and 222) each adapted for receiving a...  
WO/1997/004253A1
The description relates to a safety circuit for the alternating running of consumers, e.g. gear components of a power shift gear, and a proportional valve for such a safety circuit, in which the proportional valve can preferably be elect...  
WO/1996/035077A1
In a device (66) for safeguarding a CNC-controlled electro-hydraulic drive unit (11) against the disengagement owing to a fault of its moving part (18) from a stationary position in which it should be possible to conduct manual operation...  
WO/1996/027741A1
In a hydraulic controller, in order to easily provide a hydraulic back-up in the event of a failure of an electric system while maintaining a benefit of electrical control using a control unit (13) when controlling a displacement of a hy...  
WO/1996/015326A1
During manual operation, pilot pressure discharged from a pilot pump (41) is fed from a manual operation valve (44a) or (44b) through an electromagnetic change valve (49a) or (49b) to a main control valve (33). During automatic operation...  
WO/1996/010698A1
A device for driving a hydraulically controlled main valve (10) a first pilot valve (11) and a second pilot valve (12) for the same side of the main valve (10). Each pilot valve has a control oil inlet (17, 18), a control oil outlet (15,...  
WO/1996/001954A1
A control circuit for controlling a combined emergency shutdown and process protection (safety) system, especially on board platforms and vessels. There are two separate signal generators which, each by means of a control line (10, 17) o...  
WO/1995/033929A1
A safety switch is disclosed for electrohydraulically regulating a lifting mechanism. If deviations from the norm are detected at the main regulating valve when the regulation system starts to operate, locks are activated which allow the...  
WO/1995/023925A1
The invention relates to a safety arrangement on hydraulic piston-cylinder units, in particular for monitoring locking cylinders, e.g. of operating tools mounted on a grab bucket boom. A sensor for monitoring the piston position is provi...  
WO/1995/023958A1
An apparatus and method for detecting a leak in a closed, fluid transfer system, specifically a hydraulic system, by comparing the actual rate of fluid level change in the fluid reservoir to the rate of fluid level change computed from t...  
WO/1995/013043A1
A hydraulic system is proposed for the hydraulic operation of a height-adjustable ambulance lifting platform (H) for a stretcher which can also act as a suspension system. The system comprises a cylinder (Z) for operating the lifting pla...  
WO/1994/027052A1
When a solenoid proportional valve (91A) of a direction control valve (8A) is left open due to failure and an operator makes a reverse lever operation for operating an operation lever (4A) in an x2 direction, a low level signal is output...  
WO/1991/019108A1
The invention concerns a double-acting piston cylinder (10) in which the piston movements are transmitted by a displacement sensor (14) to an electronic control system (16). Acting on the piston rod (13A) is a mechanical brake (46). The ...  

Matches 301 - 350 out of 3,127