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| Number | Title | Issue Date |
| 7523608 | Electrically driven microfluidic pumping for actuation An actuator cell includes a supply chamber containing fluid, and an expansion chamber for receiving fluid from the supply chamber, and being expandable to deform a predetermined area of the actuator cell. The actuator cell further includes a channel providing a flui... | 04/28/2009 |
| 7322895 | Automotive accessory drive system The apparatus of the present invention provides an improved automotive accessory drive system. The automotive accessory drive system including a drive pulley operatively connected to an engine, and a plurality of driven pulleys operatively connected to one of a plur... | 01/29/2008 |
| 7322187 | Metallurgical powder compositions and articles and methods utilizing the same The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders, such as for example, powders of iron pre-alloyed with other ele... | 01/29/2008 |
| 7257947 | Power steering system A power steering system for a vehicle includes a hydraulic pump interconnected with a power steering gear and a fluid coupling that operatively connects a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an ele... | 08/21/2007 |
| 7240485 | Power steering system A power steering system for a vehicle includes a hydraulic pump connected to a power steering gear of the vehicle and a fluid coupling interconnecting a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an elect... | 07/10/2007 |
| 7166927 | Modular liquid-metal magnetohydrodynamic (LMMHD) power generation cell A LMMHD power generation cell, having a fluid channel in which a conductive fluid is forced to flow in response to an external force. A pair of pressure conveying members such as bellow reservoirs can be used for conveying the external force to the conductive flow. ... | 01/23/2007 |
| 7098412 | Pressure activated latching switch A structure embodying a switch and method of operating thereof for creating a latching switch is disclosed. The latching switch utilizes an electrorheologic fluid and the electronic latch function thereof is actuated by a pressure signal and deactivated by the remov... | 08/29/2006 |
| 7076951 | Discrete step rotary actuator A discrete step rotary actuator (1) comprises a stator (2), a rotor (3) and at least an actuating element (10) made with a shape memory active material, the actuating element (10) having a first portion (11) anchored to said... | 07/18/2006 |
| 7070027 | Magneto-rheological damper A magneto-rheological (MR) damper including a piston guided in a cylinder that is filled with a magneto-rheological fluid, its work volume being formed oblique relative to the piston axis between the piston and the cylinder. ... | 07/04/2006 |
| 7052251 | Shape memory alloy wire driven positive displacement micropump with pulsatile output Apparatuses and methods for pumping fluid are disclosed. An exemplary apparatus is a miniature pump that includes a shape memory wire that obtains a plastic condition below a transformation temperature and has a memorized shape such that the shape memory wire produc... | 05/30/2006 |
| 6997430 | Fail safe valve The invention concerns a fail-safe valve having a valve element, and a control motor being connected with the valve element via a driveline. It is endeavored to ensure the tightness of the refrigeration system in a simple manner. For this purpose, it is ensured that... | 02/14/2006 |
| 6971231 | Piston and rod assembly and method A piston assembly for a magneto-rheological fluid damper is provided that exhibits good sealing properties at elevated temperatures. The piston assembly comprises a piston rod having an axial bore therethrough, a piston core coupled to a distal end of the piston rod... | 12/06/2005 |
| 6948312 | High-performance piston core for a magnetorheological damper A high-performance piston core including a first piston cylinder and a second piston cylinder, with a piston center longitudinally disposed between and magnetically coupling the first piston cylinder and the second piston cylinder. The piston center is made of high-... | 09/27/2005 |
| 6926089 | Downhole actuation system utilizing electroactive fluids Downhole wellbore tools are actuated by electrically controllable fluids energized by a magnetic field, for example. When energized, the viscosity state of the fluid may be increased by a degree depending on the fluid formulation. Reduction of the controllable fluid... | 08/09/2005 |
| 6920753 | Magneto-electrohydraulic power steering system A magneto-electrohydraulic power steering system for a vehicle includes a magneto-electrohydraulic power steering pump interconnecting a power steering gear of the vehicle and a drive shaft of an engine of the vehicle. The magneto-electrohydraulic power steering sys... | 07/26/2005 |
| 6530217 | Micromotors, linear motors and microactuators for controlling flow properties of fluids The use of an electro-sensitive movable fluid, that is, a micromotor, a linear motor, a micropump and a method of using the micropump, a microactuator, and an apparatus which these devices are applied to, and a method and apparatus of controlling flow pro... | 03/11/2003 |
| 6463736 | Adjustment and damping device The invention relates to a controllable adjustment and damping device comprising at least one pressure chamber (4) filled with hydraulic fluid, a fluid container (11), a pump (5) connecting the pressure chamber to the fluid container, a compensating volum... | 10/15/2002 |
| 6374601 | Hydrodynamic device A hydrodynamic device comprises at least one and preferably two vane wheels in a housing cover which are rotatable with respect to one another about an axis of rotation (A) and a work fluid arranged in the housing cover which can be driven to movement by ... | 04/23/2002 |
| 6272852 | High speed actuators and vibrators based on electro-rheological fluids A pressure-operated linear actuator in which the working liquid is Electro-Rheological (ER) fluid in which there is a single flow path between an inlet and an outlet of an associated pump in which there are two or more pistons and fluid chambers delineate... | 08/14/2001 |
| 6131709 | Adjustable valve and vibration damper utilizing same An adjustable valve including a passageway, a field responsive fluid within the passageway, and flow adjustment of the fluid through the passageway. In another aspect, the valve is in a vibration damper. In yet another aspect, the damper includes a body, ... | 10/17/2000 |
| 5956951 | Adjustable magneto-rheological fluid device An adjustable magneto-rheological fluid device includes a movable piston adjacent a first chamber containing a first hydraulic fluid for moving the piston. The first hydraulic fluid interacts with a flexible magneto-rheological compartment containing a ma... | 09/28/1999 |
| 5950924 | Suck back valve A suck back valve is equipped with a displacement speed regulating device made up of an ER (Electro-rheological) fluid filled in a chamber and whose viscosity changes in correspondence with the size of an external electric field, a coil member which gener... | 09/14/1999 |
| 5502965 | Device for generating operating states characterized by differences in height in mechanical actuators A device is described for generating operating states characterized by dirences in height in actuators arranged in a matrix. In order to enable operating states which are characterized by differences in height to be produced in mechanical actuators in cl... | 04/02/1996 |
| 5377721 | Control apparatus for electroviscous fluid A control apparatus for an electroviscous fluid has a pair of electrodes between which the electroviscous fluid is disposed and a control device for applying nearly-trapezoidal shaped pulses positive and negative voltages alternately across the electrodes... | 01/03/1995 |
| 5063738 | Pressure generation and responsive mechanism with high viscous fluid A pressure generation and responsive mechanism is provided wherein several blade members bodily movable with a first member is received within a space formed in a second member. The second member provides a first flat end surface in friction engagement wi... | 11/12/1991 |
| 4840112 | Combined valve/cylinder using electro-rheological fluid Electrically controlled combined valve/cylinder apparatus. The apparatus includes a housing having a cylindrical body and spaced first and second end walls closing the body. A cylinder is positioned inside the body and a piston is positioned inside the cy... | 06/20/1989 |
| 4660379 | Airtrap power generator Liquid in a closed tank is forced and displaced out the bottom thereof by compressed air and gravity. The liquid flows to a riser and to the top of a penstock where it falls freely to a turbine in an airtight housing. The fallen liquid is displaced by tra... | 04/28/1987 |
| 4177146 | Methods and apparatus for continuously endowing liquid with mechanical energy by osmosis Liquid is continuously endowed with mechanical energy by continuously osmosing it across an osmotic membrane across which is maintained a substantial pressure difference of osmotic pressures. Continuity is insured by continuously flowing hypotonic liquid ... | 12/04/1979 |
| 4062187 | Apparatus and method for controlling kinetics of torque converter for hoist drum drive of crane The hoist drum of a mobile crane employs a controllable kinetics torque converter for transmitting power from a prime mover to the hoist drum. Apparatus and method are provided for controllably varying the density of the working fluid in the torque conver... | 12/13/1977 |
