141 |
Power transmission system |
US3785249D |
1972-03-28 |
US3785249A |
1974-01-15 |
PIROSKA J |
A power transmission system includes a linear fluid actuator having a cylinder and a piston, a screw rotatably mounted in the cylinder in an axially fixed position and having a threaded connection with the piston wherein there is some play between the threads, and means arranged to rotate the screw in either direction only when the mechanical load on the piston has counterbalance by corresponding force derived from fluid pressure for movement in both directions.
|
142 |
Determining null bias of a hydraulic valve of a robot |
US14980196 |
2015-12-28 |
US10052768B1 |
2018-08-21 |
Michael Scott Rose; Zachary John Jackowski |
An example method includes identifying an operating state at which a velocity of a hydraulic actuator configured to operate a movable member of a robot is less than a threshold velocity and an actuator force is less than a threshold force, determining a valve command that corresponds to the operating state, such that the valve command is provided to a valve configured to control flow to and from the hydraulic actuator, and the valve includes a spool movable within a body of the valve, and the valve command causes the spool to move within the body of the valve to a position that induces the operating state, and determining a null bias signal based on the valve command. |
143 |
Controlling method and system for compressed air supply to a pneumatic network, in particular in an aircraft |
US13911346 |
2013-06-06 |
US09841038B2 |
2017-12-12 |
Fabien Silet; Stephane Chevalier; Jean-Francois Rideau |
A system for supplying compressed air to a pneumatic network includes a load compressor, an air supply and a power shaft driving the load compressor. The system also includes in an air outlet of such load compressor, a connecting channel connected, on the one side, with a channel connected with the pneumatic network and, on the other side, with an air discharge conduct towards an exhaust nozzle. Air flow rate bleed valves are controlled by a processing unit via servo-loops as a function of the pressure sensors and the speed sensor. |
144 |
Method of controlling hydraulic system and hydraulic system |
US13738075 |
2013-01-10 |
US09638219B2 |
2017-05-02 |
Hideki Furuse |
A method of controlling a hydraulic system, the hydraulic system including a ram cylinder unit having a cylinder and a ram, and a hydraulic pump and a reservoir used to supply hydraulic fluid to the cylinder, and hydraulically driving the ram using the hydraulic fluid so as to move against a specific load, the method includes determining what a present state is one of an initial state, a proportional steady state, and a later state, controlling the pumping rate, which is obtained by adding the flow rate corresponding to the volume loss due to the compression of the hydraulic fluid thereto, to control the ram in the initial state, and controlling the pumping rate, which is obtained by subtracting the flow rate corresponding to volume recovery of the hydraulic fluid due to the relief of compression of the hydraulic fluid therefrom, to control the ram in the later state. |
145 |
Hydraulic servo-control of a servo-controlled gearbox |
US13870217 |
2013-04-25 |
US09574583B2 |
2017-02-21 |
Stefano Giorgini; Andrea Bersani; Luca Bovina |
A hydraulic servo-control of a servo-controlled gearbox provided with a hydraulic accumulator, having an outer housing and a piston that is slidable axially inside the outer housing and adapted to define a first variable-volume chamber for a gaseous material and a second variable-volume chamber for a control fluid under pressure; and at least one limit stop arranged at an open end of the outer housing which serve as a lower limit stop element; wherein the outer housing is provided with an upper limit stop element, which acts to limit the pressure value inside the first variable-volume chamber within a predetermined safety range. |
146 |
Vehicle-body attachment structure for electric brake actuator |
US13885067 |
2011-11-17 |
US09551363B2 |
2017-01-24 |
Arata Inoue; Takaaki Ohnishi; Kazuaki Murayama; Takehiro Horiuchi; Makoto Sawai; Kaoru Akahane; Toru Mabuchi; Nobuyuki Kobayashi |
Untreated bosses are formed in advance in two directions on a cylinder mechanism. The bosses on one side are formed as mounts to attach a motor cylinder device to a vehicle body, and the other bosses are formed as ports to connect to the cylinder mechanism. The mount bosses are formed on the outside in the width direction of the vehicle, and the port bosses are formed on the inside in the width direction of the vehicle. |
147 |
Power source apparatus and hybrid construction machine equipped with same |
US14000065 |
2012-02-09 |
US09541103B2 |
2017-01-10 |
Toshio Sora |
A power source apparatus includes a controller that carries out horsepower control to determine a flow rate of a hydraulic pump in accordance with a discharge pressure of the hydraulic pump detected by a pump pressure determination sensor. In horsepower control, the controller determines the flow rate such that a maximum input setting for the hydraulic pump defined by the discharge pressure and the flow rate is greater than a maximum output of the engine when the discharge pressure is a first discharge pressure, gradually becomes smaller as the discharge pressure changes from the first discharge pressure towards a higher pressure, and becomes smaller than the maximum output of the engine when the discharge pressure is a second discharge pressure. |
148 |
Axial piston motor and method for operation of an axial piston motor |
US14854427 |
2015-09-15 |
US09540931B2 |
2017-01-10 |
Ulrich Rohs; Dieter Voigt |
To provide an axial piston motor, comprising at least one main burner, which has at least one main combustion space and at least one main nozzle space, and comprising at least one pre-burner, which has at least one pre-combustion space and at least one pre-nozzle space, wherein the pre-combustion space is connected to the main nozzle space by way of at least one hot gas feed, that has improved operating and control characteristics even under non-steady-state operating conditions, the pre-nozzle space of the pre-burner has at least one auxiliary hot gas feed. |
149 |
Floating optical sensor mount |
US14000351 |
2012-02-21 |
US09422950B2 |
2016-08-23 |
John Hartzell; James Cirillo; Dustin Hromyak; Hung phi Nguyen; David B. Crowley; Michael A. Laurich |
A piston-cylinder actuator includes a unique mount for an absolute-position sensor. The mount is made from a bearing material provides a flexible connection between the sensor mount and the cylinder housing. This flexible connection allows the piston rod to deflect naturally, under its own weight or under other laterally-directed forces, while maintaining the distance and perpendicularity between the sensor and the rod surface, within acceptable limits. The sensor mount is made from a bearing material that will allow it to float directly on the rod surface without scuffing or otherwise damaging the rod surface, particularly the markings or other indicia on that surface. Due to the flexible connection between the sensor mount and the cylinder housing, the proper distance between the sensor and the rod surface can be maintained at all times. |
150 |
Master cylinder device and hydraulic brake system using the same |
US13914846 |
2013-06-11 |
US09388832B2 |
2016-07-12 |
Hiroshi Isono |
A master cylinder device includes a housing whose front side end is closed and which includes a third housing member separating an interior of the housing into a front side chamber and a rear side chamber and having an opening through the third housing member, a first pressurizing piston which includes a main body portion disposed in the front side chamber and which is moved forward by receiving a force for pressurizing the brake fluid to be supplied to a brake devices, and an input piston. In the master cylinder device, an input chamber into which a brake fluid is introduced is defined between a rear end of the main body portion of the first pressurizing piston and the third housing member. The input piston is fitted in the housing with seals, whereby, an inter-piston chamber across which the input piston and the pressure receiving piston face to each other. |
151 |
Hydraulic system for work machine |
US13983276 |
2012-08-21 |
US09328757B2 |
2016-05-03 |
Hiroshi Horii |
Provided is a hydraulic system for a work machine, which can ensure low temperature responsiveness of remote control valves that perform pilot operations of pilot operated directional control valves for controlling hydraulic actuators, respectively. In order to, with bringing an unloading valve V13 to an unloading position 29, circulate oil to a pilot pump oil passage w that supplies the pressure oil from the discharging circuit Y for a pilot pump 19 to remote control valves PV1, PV2, and PV6, a warm-up circuit H that flows the oil from the discharging circuit Y for the pilot pump 19 to a terminal of the pilot pump oil passage w is provided. |
152 |
Motor assembly for pneumatic tool |
US13892591 |
2013-05-13 |
US09322417B2 |
2016-04-26 |
San-Yih Su; Cheng-Wei Lai |
A motor assembly for a pneumatic tool includes: a motor cylinder coaxially secured in a tubular inner housing, which is coaxially secured in a tubular outer housing and has an inlet passage defining a longitudinal axis, including a valve seat, and defining forward and reverse passages that communicate with a motor chamber and extend through the valve seat, and an exhaust port that communicates with the motor chamber, and a throttle passage defined between the inner and outer housings; a motor rotor supported within the motor chamber and rotatable in a forward or reverse direction; and a rotary valve coaxially disposed in the inner housing, supported by the valve seat, and rotatable about the longitudinal axis between forward and reverse positions. |
153 |
Encapsulated micro-bubble materials and methods to make and use same |
US14130446 |
2012-07-02 |
US09278502B2 |
2016-03-08 |
Joseph F. Pinkerton; William Neil Everett |
Graphene materials having encapsulated gas cells and methods to make and use same. Alternative electrically conductive and atomically thin materials (such as graphene oxide) can be used alternatively or in addition to the graphene in the graphene encapsulated micro-bubble materials. |
154 |
Pneumatic shifting force supporting device |
US14037584 |
2013-09-26 |
US09261117B2 |
2016-02-16 |
Wlodzimierz Macke |
A pneumatic shifting force supporting device for a gearbox comprises a housing structure having a compressed air inlet and an air vent, and a control rod and an output unit comprising a working piston defining two pneumatic working chambers. A valve arrangement is functionally provided between control rod and output unit. By acting on the two pneumatic working chambers, the valve arrangement causes a pneumatic follow-up control from the output unit to the control rod comprising two valve pistons, annular sealing edges, valve spools and valve seats. A throttle slide is associated with at least one of the valve pistons and is slidable relative thereto. The throttle slide has a closing edge co-operating with the respective associated valve seat and delimiting at least one throttle passage, the cross-sectional area of which depends on the relative position of the throttle slide with respect to the associated valve piston. |
155 |
Liquid piston arrangement with plate exchanger for the quasi-isothermal compression and expansion of gases |
US13752840 |
2013-01-29 |
US09234534B2 |
2016-01-12 |
Ivan Cyphelly |
The invention relates to a liquid piston arrangement for compressing and expanding gases. The liquid piston arrangement includes a liquid piston which is embodied by a liquid level formed by a liquid in a high-pressure space and a stack of sheets with mutually spaced apart sheet metal plates which is supported in the high-pressure space dipping in the liquid and is sequentially flowed around by the liquid. |
156 |
Axial piston motor and method for operating an axial piston motor |
US13979895 |
2012-01-18 |
US09194402B2 |
2015-11-24 |
Ulrich Rohs; Dieter Voigt |
To provide an axial piston motor (1), comprising at least one main burner (2), which has at least one main combustion space (21) and at least one main nozzle space (23), and comprising at least one pre-burner (3), which has at least one pre-combustion space (31) and at least one pre-nozzle space (33), wherein the pre-combustion space (31) is connected to the main nozzle space (23) by way of at least one hot gas feed (30), that has improved operating and control characteristics even under non-steady-state operating conditions, the pre-nozzle space (33) of the pre-burner (3) has at least one auxiliary hot gas feed (40). |
157 |
Microactuator using bubble growth and destruction |
US14113972 |
2012-05-11 |
US09103360B2 |
2015-08-11 |
Sung-Il Kim; Ki-Ho Park; Won-Pyo Chun; Kye-Jung Lee |
Disclosed is a microactuator using growth and destruction of bubbles including a first chamber provided with a heating plate installed at an exterior of a bottom surface of the first chamber to generate heat, and filled with a first liquid working fluid such that bubbles are caused, by heat, to grow at an interface of a cavity on an inner surface of the first chamber to be heated, a second chamber provided with a heating plate installed at an exterior of a bottom surface of the second chamber to generate heat, and filled with a second liquid working fluid such that bubbles are caused, by heat, to grow at an interface of a cavity on an inner surface of the second chamber to be heated, a connection path to connect the first chamber and the second chamber to each other, the connection path being provided therein with a moving member adapted to isolate the first and second chambers from each other and to move when internal pressure changes according to growth and destruction of the bubbles, a first subline to connect the connection path to the second chamber such that the first working fluid moves the moving member to one side and is guided to the second chamber according to increase in the internal pressure by growth of the bubbles in the first chamber, a second subline to connect the connection path to the first chamber such that the second working fluid moves the moving member to the other side and is guided to the first chamber according to increase in internal pressure by growth of the bubbles in the second chamber, and a plurality of cooling means installed on the first subline and the second subline to destroy bubbles produced in the first and second chambers. |
158 |
Substance Dispensing System |
US14620848 |
2015-02-12 |
US20150151324A1 |
2015-06-04 |
Robert S. Burns |
A substance dispensing system that includes a hydraulic drive system is disclosed. The hydraulic drive system includes a hydraulic valve having a variable pressure setting, the hydraulic valve operable between a closed position in which a hydraulic pump moves hydraulic fluid to a hydraulic cylinder and an open position in which the hydraulic pump moves the hydraulic fluid to a hydraulic reservoir. The substance dispensing system of the present disclosure provides a system that recirculates hydraulic fluid in a hydraulic drive system instead of recirculating a substance back to a container via a pump. The substance dispensing system of the present disclosure allows for precise, accurate, and instantaneous control of an external force in a substance dispensing system. |
159 |
Clamping attachment with regenerative hydraulic circuit |
US13919699 |
2013-06-17 |
US08979154B2 |
2015-03-17 |
David W. Petronek |
A regenerative hydraulic circuit for a clamping attachment limits the clamping force applied to a clamped load. |
160 |
ENCAPSULATED MICRO-BUBBLE MATERIALS AND METHODS TO MAKE AND USE SAME |
US14130446 |
2012-07-02 |
US20140165545A1 |
2014-06-19 |
Joseph F. Pinkerton; Everett William Neil |
Graphene materials having encapsulated gas cells and methods to make and use same. Alternative electrically conductive and atomically thin materials (such as graphene oxide) can be used alternatively or in addition to the graphene in the graphene encapsulated micro-bubble materials. |