| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 192580100 | Fluent material | 38 |
| 20130008756 | Wet Friction Clutch - Lubricant Systems Providing High Dynamic Coefficients of Friction Through the Use of Borated Detergents - A wet friction clutch—lubricant system wherein a wet friction clutch having a cellulose—based friction lining having a surface coating of silica based particles, or a device including such a clutch, is lubricated with a lubricant composition a major amount of oil of lubricating viscosity and minor effective amounts of performance enhancing additives including (a) ashless dispersant; (b) organic phosphorus compound and (c) borated detergents; and optionally, (d) an auxiliary friction modifier. | 01-10-2013 |
| 192580200 | Fluid | 34 |
| 20100044179 | FRICTIONAL ENGAGEMENT APPARATUS - In a frictional engagement apparatus that includes a clutch drum, separator plates, a clutch hub, and friction plates, a plurality of concave portions that dip inward in the plate thickness direction and a plurality of convex portions that protrude outward in the plate thickness direction are formed on an edge of the separator plates and/or a an edge of the friction plates, with each convex portion being arranged between two adjacent concave portions. Ridge lines of the concave portions and the convex portions pass through positions away from a center point of the separator plates and/or the friction plates. | 02-25-2010 |
| 20100219035 | TORQUE TRANSMISSION DEVICE - The invention relates to a torque transmission device, especially for the drive train of a motor vehicle, said device comprising a pump comprising a first pump part, a second pump part, a suction chamber and a pressure chamber, the first pump part and the second pump part being mutually rotatable. A rotary movement of the first pump part in relation to the second pump part allows a hydraulic fluid to be transported from the suction chamber into the pressure chamber of the pump, torque transmitted between the first pump part and the second pump part depending on the pump pressure generated by the pump. At least one pressure control device is associated with the pump, said device constricting a fluid stream transported by the pump in a variable manner in order to vary the rotational speeds of the first pump part and the second pump part in relation to each other. | 09-02-2010 |
| 20090090592 | High-Frequency Anti-Lock Clutch System and Method - A clutch assembly is provided including a controller, a plurality of vibration sensors, a clutch housing containing a lubricated clutch pack having a friction interface, a clutch piston responsive to a current command from the controller and operable for applying a compression force on the clutch pack, and a high-frequency (HF) oscillation source configured to generate at least one HF oscillation, and to direct the HF oscillation to the friction interface, wherein the controller is operable to detect clutch shudder and activate the source in response thereto to minimize the clutch shudder. The source includes HF hardware, and generates different HF oscillations applied directly to the clutch housing or to the clutch-apply current command. A method of reducing clutch shudder includes setting a threshold clutch shudder amplitude, detecting clutch shudder, and applying a HF oscillation to a friction interface to minimize clutch shudder when the detected shudder exceeds the threshold. | 04-09-2009 |
| 20100089716 | CLUTCH - A clutch of hydraulic-pressure type comprising a linearly controlled piston ( | 04-15-2010 |
| 20090288929 | PTM MULTIPLEX HYDRAULIC DIAGRAM WITH TWO POSITION SPOOL VALVE - The present invention relates to a clutch actuation mechanism having a valve, a plurality of couplings in fluid communication with the valve, wherein one of the plurality of couplings is operable to distribute power between a primary set of wheels and a secondary set of wheels, and another of the plurality of couplings is operable to distribute power between each of the secondary set of wheels. The present invention also includes a drive shaft driven by a source of power, which is also connected to the secondary set of wheels, and a pressure supply device in fluid communication with the valve, wherein the valve directs fluid to the plurality of couplings, and when the valve directs fluid to the one of the plurality of couplings operable to distribute power between the primary set and secondary set of wheels, the drive shaft will transfer power to the secondary set of wheels. | 11-26-2009 |
| 20100270117 | FLUID COOLED COUPLING ASSEMBLY - A coupling assembly for use in transmitting force includes a housing which at least partially encloses a rotatable disc. The housing has a plate portion with an annular force transmitting surface which is engagable with the rotatable disc. A cooling fluid channel is at least partially defined by a side of the plate portion opposite from the force transmitting surface. A plurality of indentations disposed in an inner surface | 10-28-2010 |
| 20100294610 | Fluid-Filled Clutch Arrangement - A fluid-filled clutch arrangement includes a housing; a piston mounted with freedom of axial movement in the housing, the piston being sealed against the housing, the piston having a drive side bounding a drive side pressure space from a takeoff side bounding a takeoff side pressure space; a clutch which can establish and release a working connection between a drive and a takeoff as a function of the position of the piston relative to the clutch; and a partition wall bounding the takeoff side pressure space opposite the piston, the partition wall being active between the takeoff side pressure space and a cooling space. At least one supply line connects a fluid supply source to at least one of the drive-side pressure space, the takeoff side pressure space, and the cooling space. | 11-25-2010 |
| 20090127051 | Fluid Friction Clutch - A fluid friction clutch with improved fluid pumping system. A scraping member is provided adjacent the clutch plate and has a duct which communicates with the reservoir chamber. | 05-21-2009 |
| 20100294609 | CLUTCH DEVICE - A clutch device includes a sleeve-shaped first drive member, a first seal member, a second seal member, a plug, a second drive member, and a control member. The fist drive member, the first seal member and second seal member cooperate to form a sealed chamber filled with hydraulic liquid. The plug divides the sealed chamber into a first chamber and a second chamber, and the plug defines a screw hole and an opening communicating the first chamber with the second chamber respectively. An output shaft is extended from the plug. The second drive member is driven by the first drive member, and includes a screw shaft threadedly engaged with the screw hole of the plug. The control member is configured for covering or uncovering the opening of the plug. The clutch device is used for prevent overload. | 11-25-2010 |
| 20080236980 | Coupling Device - A clutch device for a motor vehicle has friction elements around which coolant flows and which, by way of a piston, can be pressed against one another for torque transmission. The first piston side is acted on with operating pressure, and the second piston side is acted on with coolant pressure. A valve, by which the operating pressure can be set, and a device which makes a reaction of the coolant pressure on the operating pressure possible are provided. The device is designed as a hydraulic resistance cascade and is connected between coolant supply and coolant return lines of the friction elements. A return pressure line branches off in the center of the hydraulic resistance cascade and is connected to the valve. | 10-02-2008 |
| 192580300 | Vane clutch | 1 |
| 20100294611 | HYDRODYNAMIC MACHINE, IN PARTICULAR HYDRODYNAMIC RETARDER - The invention relates to a hydrodynamic machine, in particular hydrodynamic retarder,
| 11-25-2010 |
| 192580400 | Viscous shear | 22 |
| 20100163362 | Fan drive - A fan drive ( | 07-01-2010 |
| 20110168512 | ELECTRONICALLY CONTROLLED VISCOUS FAN DRIVE WITH BUSHING - A viscous shear fan drive mechanism for a cooling fan. A moveable valve disk is provided which controls the quantity of fluid in the operating chamber. An electronic actuation system activates piston and shaft members which move the valve disk against the bias of a return spring to open the fill holes, allow fluid communication between the reservoir and working chambers, and allow rotation of the cooling fan. Without activation of the electronic actuation system, the flow of fluid to the working chamber is prevented. A non-magnetic or insulating bushing member adjacent the piston and shaft members prevents the system from sticking in the actuation condition when power is eliminated. | 07-14-2011 |
| 20100018826 | FAN CLUTCH - A fan clutch is provided to which a fan may be removably attached with the aid of a flange ring, the fan clutch having a housing that comprises a first front housing part and a second rear housing part to which the flange ring is attachable with the aid of connecting elements ( | 01-28-2010 |
| 20120255827 | Drive System of the Engine Cooling System for Motor Vehicles - In a motor vehicle having a radiator for cooling a cooling medium and a fan driven by a driveshaft of an internal combustion engine, the fan being arranged between the radiator and the internal combustion engine, a drive system for the fan has a viscous coupling and a vibration damper, which includes an elastic element and which dampens and/or decouples the vibrations between the driveshaft-side output of the internal combustion engine and the fan. The viscous coupling and the vibration damper are arranged between the internal combustion engine and the fan, wherein the vibration damper is arranged between the fan and the viscous coupling and dampens and/or decouples vibrations acting between the fan and the viscous coupling. | 10-11-2012 |
| 20120279820 | INTEGRATED VISCOUS CLUTCH - A viscous clutch ( | 11-08-2012 |
| 192580410 | Multiple plate | 2 |
| 20110067970 | FLUID FRICTION CLUTCH - A fluid friction clutch includes a drivable housing having a working chamber and a reservoir, at least one opening between the reservoir and the working chamber configured to provide fluid communication between the reservoir and the working chamber, a driven disk supported for rotation in the working chamber, and a rotor mounted in the reservoir and rotatably coupled to the driven disk for rotation about an axis of rotation, the rotor having a plurality of arms, separated by a plurality of gaps, projecting away from its axis of rotation. | 03-24-2011 |
| 20110147156 | VISCOUS COUPLING AND SUSPENSION APPARATUS - A viscous coupling ( | 06-23-2011 |
| 192580500 | Separate reservoir | 15 |
| 20080257677 | VISCOUS FRICTION CLUTCH FOR DRIVING A COOLING FAN IN A MOTOR VEHICLE - A viscous friction clutch for driving a cooling fan in a motor vehicle is disclosed, wherein the viscous friction clutch comprises a driving pulley and a housing, a supply chamber and a working chamber, a device for supplying shear fluid from the supply chamber to the working chamber and a device for returning the shear fluid from the working chamber to the supply chamber. | 10-23-2008 |
| 20130037371 | HIGHLY REACTIVE FLUID FAN COUPLING DEVICE - Provided is a highly reactive fluid fan coupling device utilizing the non-Newtonian fluid characteristics of oil, thereby obtaining an excellent reaction rate of fan rotation using a control signal. In the fan coupling device, where the interior of a sealed housing supported on a rotary shaft with a drive disk secured thereto is partitioned in an oil reservoir chamber and a torque transmission chamber placing the drive disk thereinto by a partition plate; drive torque is transmitted to a driven side by oil supplied to the torque transmission chamber; and opening and closing of a flow path of oil is controlled by a valve member actuated by an electromagnet, wherein a mechanism to scrape out the oil in the oil reservoir chamber utilizing the non-Newtonian fluid characteristics of oil is provided on the drive disk so as to be opposed to an oil supply adjusting hole of the partition plate. | 02-14-2013 |
| 20090183964 | Centrifugally Balanced Fluid Reservoir and Method of Use Thereof - A centrifugally balanced fluid reservoir comprising a fluid reservoir having a channel therein, a flexible barrier dividing the channel of the fluid reservoir into a first compartment and a second compartment, a first aperture in the first compartment allowing transfer of fluid into and out of the first compartment, and a second aperture in the second compartment allowing transfer of fluid into and out of the second compartment. The first aperture may fluidly connect the first compartment to an external pressure source, and the second aperture may fluidly connect the second compartment to a rotating device. The channel of the fluid reservoir may be toroidal and annular. The rotating device and the fluid reservoir may be coaxially and concentrically aligned and may be rotated together such that the amount of fluid in the rotating device is regulated by the balance of centrifugal forces on the fluid in the rotating device countered by the amount of fluid in the second compartment, which is a function of the amount of fluid in the first compartment, which may be regulated by the external pressure source. | 07-23-2009 |
| 20120138409 | LIQUID FRICTION CLUTCH - A liquid friction clutch ( | 06-07-2012 |
| 192580600 | Automatic regulation | 9 |
| 192580610 | Magnetic or electric | 6 |
| 20090277740 | Method for controlling external control type fan coupling device - In a method for controlling an external control type fan coupling device | 11-12-2009 |
| 20090084650 | Electromagnetically Actuated Viscous Clutch - A valve assembly ( | 04-02-2009 |
| 20100140040 | Viscous Clutch - A viscous clutch assembly ( | 06-10-2010 |
| 20100059325 | ELECTROMAGNETIC DIFFERENTIAL SPEED CONTROL SYSTEM FOR A FLUID COUPLING DEVICE - A speed monitoring system ( | 03-11-2010 |
| 20110266111 | ELECTRONICALLY CONTROLLED FLUID COUPLING DEVICE WITH FLUID SCAVENGE CONTROL - A viscous fan drive with a front-mounted fan and electrical actuation without a tethered harness. The mechanical package includes an inverted viscous clutch, a drive pulley and a split electromagnetic actuator with the electrical portion mounted to a stationary mounting member. An axially moveable valve member controls the flow of viscous fluid. | 11-03-2011 |
| 20130134008 | Electronically Controlled Fluid Coupling Device With Fluid Scavenge Control - A viscous fan drive with a front-mounted fan and electrical actuation without a tethered harness. The mechanical package includes an inverted viscous clutch, a drive pulley and a split electromagnetic actuator with the electrical portion mounted to a stationary mounting member. An axially moveable valve member controls the flow of viscous fluid. | 05-30-2013 |
| 192580630 | Temperature | 3 |
| 20080217132 | Viscous Fluid Coupling Device - A viscous fluid coupling device includes a drive shaft, a housing rotatably supported by the drive shaft, a partition wall dividing an interior space of the housing into an operation chamber and a storage chamber having a circular arc portion, a rotor accommodated in the operation chamber and fixed to the drive shaft, a supply passage for supplying operating fluid from the storage chamber to the operation chamber, a return passage for returning the operating fluid in the operation chamber to the storage chamber, and a first valve disposed in the supply passage and the return passage respectively. The first valve is closed when the drive shaft rotates at a speed lower than a predetermined rotation speed and opened when the drive shaft rotates at the predetermined rotation speed. The viscous coupling device further includes an opening of the supply passage and a second valve for opening and closing the opening. | 09-11-2008 |
| 192580640 | Coolant and clutching medium | 1 |
| 20100089717 | MECHANICAL SLIP FAILSAFE SYSTEM FOR A HEAVY DUTY MULTI-SPEED FAN CLUTCH - A failsafe system for a heavy-duty multi-speed clutch includes a thermal valve coupled within a clutch pressure tube orifice circuit protecting a clutch pack from heat degradation. When oil temperature of the clutch reaches a level where thermal degradation can occur, the thermal valve allows flow into a clutch piston system at a maximum operating pressure, thereby engaging a clutch drive and cooling the clutch to a safe condition. | 04-15-2010 |
| 192580680 | Ambient | 1 |
| 20100025177 | FLUID COUPLING DEVICE - A fluid coupling device, includes a driving rotor, a driven rotor including an operation space, a valve unit supplying fluid stored in a storage space to the operation space and stopping supplying the fluid in accordance with a change in air temperature, and a pump portion for returning the fluid from the operation space to the storage space. A valve member of the valve unit is movable between a closed position and an open position, and includes an intermediate flow passage for keeping a predetermined amount of the fluid in the storage space and supplying the rest of the fluid to the opening when the valve member is in a predetermined position between the closed position and the open position. | 02-04-2010 |
| 192580700 | Pump-out feature | 2 |
| 20100122885 | OD WIPER - A viscous fan drive having improved pumping efficiency from removing fluid from a fluid operating chamber to a fluid reservoir chamber is achieved by providing a wiper element that is located within the radial clearance between the clutch and the housing that effectively seals leakage paths leading (upstream) and trailing the wiper. The wiper element includes a radial tang that is positioned within a corresponding slot of the cover wall. The wiper element also has a pair of spaced apart arms extending from the radial tang portion each having a radial outer surface that has a similar radius as the cover wall and a radial inner surface has a similar radius as the clutch. The wiper element also preferably includes details designed to seal the radial inner surface to the outer periphery of the clutch during fan drive operation and a locating detail to aid in assembly. | 05-20-2010 |
| 20100140039 | Pump Clutch - The pump clutch is a device which transfers energy from its input shaft to the output shaft where a hydraulic gear pump is provided to enable the circulation of oil inside. The clutch input shaft is connected to the pressure production system; thus, the energy it requires to circulate the oil is provided. The amount of engagement between the clutch output shaft and the clutch input shaft is determined by the amount of oil circulating in the system. In turn, the amount of oil in the device is controlled by the control tap. With the clutch output shaft stabilized on the surface, we can control the circulation of the oil in the system with the control tap and the energy in the input shaft is thus transferred onto the stabilized surface through the output shaft thereby halting the rotation of the input shaft. | 06-10-2010 |
| 192580900 | Radial vane | 1 |
| 192580910 | Vanes on inner member | 1 |
| 20080230343 | Coupling - A device for controlling the activation of an apparatus by a motor, intended to be inserted between, the operation output of the motor and the operation input of the apparatus whose activation is to be controlled. The device includes: —a blade pump having a rotor, at least one blade carried by this rotor and a rotary body forming a pumping chamber missing an outlet, and one of the component parts, among the rotor and the rotary body, being connected to the operation output of the motor, whilst the other of these component parts is connected to the operation input of the apparatus to be controlled; —and a supply intended to supply liquid to the pumping chamber. | 09-25-2008 |
| 192059000 | Axially movable piston | 1 |
| 20080271969 | Shaft coupling - A shaft coupling device to couple first ( | 11-06-2008 |
| 192060000 | Transversely movable piston | 2 |
| 20110005884 | Engine Clutch and Method of Using Same - The invention relates to engine clutches. The clutch includes a drive shaft rotated by the engine, an eccentric shaft selectively rotated by the drive shaft, a clutch fluid, a plurality of pistons, and a fluid regulator. The eccentric shaft is positionable in an opening of the drive shaft for rotation thereby. The eccentric shaft has cylinders extending radially therethrough and a central channel extending longitudinally therethrough. The clutch fluid flows between the cylinders and channel. Each piston is slidably positionable in a cylinder in response to flow of clutch fluid. The pistons have an outer end in constant contact with the drive shaft via a bearing. The fluid regulator is positionable in the central channel for selectively restricting flow of clutch fluid whereby rotational speed of the eccentric shaft is adjusted. The eccentric shaft is connectable to a device, such as a fan, for rotation therewith. | 01-13-2011 |
| 20090194382 | CLUTCH - The invention relates to a clutch for connecting a component at the driving end and a component at the driven end. Said clutch comprises at least one first and a second clutch part ( | 08-06-2009 |
