| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 091459000 | Electrically operated (275) (361) | 12 |
| 20090000467 | Hydraulic Unit - A hydraulic unit comprises a solenoid valve group with at least two solenoid valves having each a valve cartridge and a solenoid subassembly arranged around the valve cartridge. According to the invention, a positioning unit is arranged between at least two adjacent solenoid valves and applies a force to at least two adjacent solenoid valves in such a way that the corresponding solenoid subassembly of the solenoid valve takes a defined radial position relative to the corresponding valve cartridge of the solenoid valve. | 01-01-2009 |
| 20110226125 | Electro-mechanical control system for positioning fluid motors - A fluid motor and a control system that includes an electronic controller and a mechanical servo to position a fluid motor. The electronic controller is combined with a non-electronic self storing position feedback device. The electronic controller is capable of providing accurate positioning and the positioning is maintained with a mechanical servo mechanism. The fluid motor can be either hydraulically or pneumatically operated. | 09-22-2011 |
| 20110308382 | COMPRESSED AIR ENGINE - An air engine system includes a motor coupled to the drive shaft of an air engine to control the speed of the air engine. The air engine uses compressed air from a compressed air source provided by an air compressor. The air engine may be used on a vehicle, providing a clean environmentally-friendly means of locomotion. | 12-22-2011 |
| 20120260796 | RECIPROCATING PISTON COMPRESSOR WITH DELIVERY RATE CONTROL - In a reciprocating piston compressor with delivery rate control, the electromagnetic actuating device ( | 10-18-2012 |
| 20120312157 | PNEUMATIC SYSTEM FOR CONTROLLING ALUMINUM BATH CRUST BREAKER - A pneumatic system controlling a bath crust breaker includes a cylinder defining a piston chamber. A piston is slideably displaced within the cylinder by pressurized fluid directed to either a piston chamber first portion with respect to the piston or a piston chamber second portion oppositely positioned about the piston. A pneumatic valve system includes a first control valve aligned between first control valve first and second positions, the first control valve first position aligned with the first portion, and in the first control valve second position is aligned with the second portion. A second control valve is aligned between second control valve first and second positions. An orifice between a pressure source and first control valve is sized to control fluid flow rate so a pressure reached in either the first or second portion during a crust breaking cycle is less than a pressure source maximum pressure. | 12-13-2012 |
| 20130220110 | VEHICLE BODY INCLINATION-ANGLE REGULATING UINT, HYDROPNEUMATIC SUSPENSION MECHANISM AND MOBILE CRANE - A vehicle body inclination angle regulating unit ( | 08-29-2013 |
| 20130298756 | VACUUM LOCK - A vacuum lock having a main body portion, a cylinder and a piston is described. The cylinder is disposed within the main body portion and has an opening. The cylinder has one or more sealing rings disposed on an inside surface and an air vent opposite the opening. The vacuum lock can further include a piston adapted to fit in the cylinder and guides. The vacuum lock can also include a valve coupled to the air vent. | 11-14-2013 |
| 20140208934 | CONTINUOUSLY ADJUSTABLE CONTROL MANAGEMENT FOR A HYDRAULIC TRACK SYSTEM - The present disclosure provides a control system of a powered machine. The control system includes a hydraulic motor configured to drive a track system of the machine. The motor is operable with a variable displacement. A control valve is fluidly coupled to the motor. In addition, the control system includes a controller and an electro-hydraulic valve disposed in electrical communication with the controller and fluid communication with the control valve. The electro-hydraulic valve receives a signal from the controller, and based on the signal, the electro-hydraulic valve hydraulically varies the start of control pressure of the motor. | 07-31-2014 |
| 20140352524 | Proportional Servo Hydraulic Control Valve - A system has an actuator having a rotor or a linear piston, and ports for hydraulic fluid, an electro-mechanical sensor sensing position of the rotor or linear piston, a valve having a 1 plug in a bore of a valve body, the plug having cross bores aligning with passages within the valve body communicating inlet and outlet ports depending on relative position of the plug in the bore of the valve body, a servo motor to move the plug around or along the axis to different positions to align individual ones of the cross bores with individual ones of the passages communicating with individual ones of the ports, and a programmable controller coupled to the electro-mechanical sensor and to the servo motor, the controller enabled to control the servo motor to accomplish programmed movement and position of the rotor or linear piston of the hydraulically-driven actuator. | 12-04-2014 |
| 20160040692 | INTEGRATED IMPLEMENT DOWNFORCE CONTROL SYSTEMS, METHODS, AND APPARATUS - A downforce controller for an agricultural implement having a double-acting hydraulic cylinder. The cylinder is configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between the agricultural toolbar and the agricultural row unit. A first pressure in a first chamber of the cylinder and a second pressure in a second chamber of the cylinder have counteracting effects on the net downforce. A manifold coupled to the cylinder is in fluid communication with the first chamber. A pressure control valve coupled to the manifold is in fluid communication with the manifold and the first chamber. | 02-11-2016 |
| 20170234333 | Actuator Controller and Method for Regulating the Movement of an Actuator | 08-17-2017 |
| 20180022442 | System for actuating a control surface of an aircraft | 01-25-2018 |
