| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 192850610 | Cooling or lubricating | 14 |
| 20100288597 | DRIVE FORCE TRANSMITTING APPARATUS - A drive force transmitting apparatus comprises a dry clutch, a hydraulic cylinder, a piston arm, an elastic partitioning member, a first seal member and a leakage lubricating fluid recovery path. The elastic partitioning member prevents lubricating fluid that has leaked from a sliding portion of a piston of the hydraulic cylinder from flowing into the dry clutch. The first seal member is disposed between opposing surfaces of a cylinder housing and a clutch cover at a position downstream from the elastic partitioning member in a leakage flow direction of lubricating fluid that has leaked. The leakage lubricating fluid recovery path is at least partially formed by a gap between the cylinder housing and the clutch cover, such that lubricating fluid leaking past the piston is conveyed to an inside of the transmission while maintaining a sealed state established by the elastic partitioning member and the first seal member. | 11-18-2010 |
| 20110042177 | DUAL CLUTCH TRANSMISSION HAVING AREA CONTROLLED CLUTCH COOLING CIRCUIT - A dual clutch transmission having a hydraulic circuit for controlling and cooling the clutches of a dual clutch transmission having lube valves in fluid communication with a source of pressurized fluid and wherein the cooling flow is controlled by a solenoid which is adapted to move a valve member to produce a flow area through the valve that is an inverse function of the current delivered to the solenoid and so as to deliver a predetermined control solenoid pressure ultimately to each of the clutches of a dual dutch transmission. | 02-24-2011 |
| 20110220452 | FAN DRIVE SYSTEM WITH LUBRICATION FLOW SYSTEM - Hydraulic fan drive system with oil flow system. A modular valve mechanism is provided with coaxial oil passages to circulating lubrication oil through the clutch and to and from a heat exchanger. | 09-15-2011 |
| 20120024655 | COMPACT UNIVERSAL FLUID-ACTUATED CLUTCH - A compact universal fluid-actuated clutch employs a pair of tapered roller bearings between a cover plate and output shaft, the roller bearings serving to not only rotationally maintain the output shaft, but receive and transfer clutch reactionary forces therethrough. Lubrication to the tapered roller bearings serves to lubricate not only a thrust bearing through which the actuation forces are transferred, but also to lubricate the clutch, as well, in the embodiment of a wet clutch. Also provided is an output shaft brake assembly, which is also lubricated through the tapered roller bearings, and which is of a small compact nature, consisting of a piston rotatably secured to the end cover, and a rotor operatively attached to the output shaft. The invention substantially eliminates the need for rotary unions and rifle boring of the output shaft, and allows for adaptation of the shaft to direct or belt drive equipment connections. | 02-02-2012 |
| 20130228411 | POWER TAKEOFF LUBRICATION DEVICES AND METHODS - Power takeoff lubrication devices and methods are disclosed. Embodiments include an accumulator connected to a power takeoff fluid supply line and storing fluid (which may be under pressure) for selective use independent of the fluid being supplied by the fluid supply line. In some embodiments, the fluid in the accumulator is supplied to various components within the power takeoff, including the clutch plates (which may have fluid supplied prior to and/or during engagement), which can decrease wear and/or clutch temperature. In some embodiments, the fluid in the accumulator is supplied to the clutch piston to actuate the clutch piston when the pressure in the supply line is less than optimal and/or to stabilize the pressures in the hydraulic lines connected to the clutch piston. In still further embodiments, the fluid in the accumulator is supplied to the clutch when the fluid supply line pressure is less than optimal. | 09-05-2013 |
| 20140054126 | ELECTRO-HYDRAULIC CONTROL SYSTEM USING SHIFT VALVES FOR A HYBRID DRIVE UNIT - A valve body assembly for a hybrid drive unit includes a pressure regulator valve, a first on/off shift valve for controlling a stationary clutch, a second on/off shift valve for controlling a rotating clutch, and a third on/off shift valve for controlling a damper bypass clutch. The control system controls the stationary clutch and the rotating clutch to operate the hybrid drive unit in four different modes. The first shift valve, the second shift valve and the third shift valve do not include a regulated pressure feedback port, nor a pressure switch for indicating a clutch fill level. | 02-27-2014 |
| 20140097060 | VEHICLE DRIVING DEVICE - A first electric motor cooling flow passage ( | 04-10-2014 |
| 20140284168 | LUBRICATION STRUCTURE OF DRIVING FORCE TRANSMISSION APPARATUS - A lubrication structure of a driving force transmission apparatus includes a rotating shaft, a friction engagement device, a piston member, a piston housing, a component, a piston chamber, a moving member, a holding member, a rotation stopper, and a hydraulic oil path. The rotating shaft has a shaft direction and is rotatable around the shaft direction. The friction engagement device includes a friction engagement unit which is arranged around an outer circumference of the rotating shaft and in which a plurality of friction materials are alternately laminated along the shaft direction. The piston member is provided movably along the shaft direction to press the friction engagement unit so that the plurality of friction materials engage with each other. The piston housing houses the piston member. | 09-25-2014 |
| 20160032986 | HIGH EFFICIENCY HYDRAULIC TRANSFER CASE - A power transfer case ( | 02-04-2016 |
| 20160097428 | TRANSMISSION SYSTEM HAVING A SLIDER VALVE - A transmission system including a clutch pack, a piston to engage and disengage the clutch pack, a lube oil passage to transmit lube oil, a clutch fluid passage to transmit clutch fluid, and a slider valve infinitely movable between an open position and a closed position and in fluid communication with the lube oil passage and the clutch fluid passage. In the open position, the slider valve allows lube oil to flow from the lube oil passage to the clutch pack, and in the closed position, the slider valve prevents lube oil from flowing from the lube oil passage to the clutch pack. When the piston engages the clutch pack, the piston pushes the slider valve to be in the open position, and when the piston disengages the clutch pack, the slider valve remains in the open position based on pressure by the clutch fluid on the slider valve. | 04-07-2016 |
| 20160097431 | FAN CLUTCH - A fan clutch assembly includes several features. A first feature relates to a lubrication passage that runs through the clutch package and has a return collection passage that extends through the operating piston. As a result, pitot tubes employed behind the piston may not be necessitated. Additionally, an anti-tamper device may be installed on the lead screw body to prevent adjustment of the fan hub and unintentional adjustment of the load carried on various bearings contained within the fan clutch assembly. Additionally, to position the speed sensor appropriately, a transfer shaft is provided that extends from the fan hub and/or lead screw back to the backside where a sensor is provided. This transfer shaft can be adjusted to precisely locate the sensor target relative to the sensor. | 04-07-2016 |
| 20160146270 | CLUTCH HYDRAULIC SYSTEM FOR VEHICLE - A vehicle clutch hydraulic system for a vehicle is provided with a mechanical oil pump, an electric oil pump, a forward clutch and a control valve unit. In the vehicle clutch hydraulic system, a main pump oil passage fluidly connects the mechanical oil pump to the control valve unit. A sub-pump oil passage fluidly connects the electric oil pump to a forward clutch oil passage into which an oil passage outlet opens at an inside location closer to a clutch rotational axis than a clutch oil chamber of the forward clutch. | 05-26-2016 |
| 20160169297 | OPTIMIZED OUTER CLUTCH HOUSING FOR REDUCED SPIN LOSS, IMPROVED OIL FLOW AND IMPROVED CLUTCH DURABILITY | 06-16-2016 |
| 20190145470 | HYDRAULIC CLUTCH ACTUATION WITH ON-DEMAND CLUTCH OILING | 05-16-2019 |
