| Patent Number |
Title Of Patent |
Date Issued |
| RE36949 |
Fluid machine having screw rotors with a straight portion to be chucked |
November 7, 2000 |
| A shaft hole 69 in a cast rotor main body 67 has a hollow space 75 and an opening 79 in a tooth trace 73 formed by using a core. A hollow screw rotor 35 is formed by fixing a rotor shaft 47 in this shaft hole 69. A straight portion 81 to be chucked at the time of machining is formed at |
| 7455612 |
Rotatively driving apparatus |
November 25, 2008 |
| A rotatively driving apparatus includes: a differential rotation amplification mechanism for amplifying differential rotation between a rotating shaft and a drive pinion shaft which are relatively rotatable; a rotor interlockingly rotatable with a amplified differential rotation ampl |
| 7452299 |
Coupling apparatus |
November 18, 2008 |
| The invention can reduce a number of parts, make an assembly and a part management easy and make a setting of an interval in an axial direction easy. A coupling apparatus is constructed by a lock ring which is rotationally engaged with a side gear corresponding to one of a differenti |
| 7354374 |
Differential unit |
April 8, 2008 |
| A differential unit which can be arranged in compact as a whole, while a differential limit and a differential lock are appropriately executed. The differential unit is provided with a differential mechanism transmitting from a differential case (45) to a pair of axle shafts a rotati |
| 7326142 |
Partition structure of power train device |
February 5, 2008 |
| A partition structure of a power train device is provided with: a second differential coupled with an external first differential so as to receive a driving force input to the first differential; a case having a first end facing to the first differential, a second end opposed to the firs |
| 7325664 |
Electromagnetic actuator, and electromagnetic clutch and differential using the same |
February 5, 2008 |
| The electromagnetic actuator includes an electromagnetic coil configured to provide actuation force in accordance with a solenoid current to be supplied, to a clutch and configured to actuate the clutch to control relative rotation between first and second members. The electromagnetic |
| 7296644 |
Reduction-drive device |
November 20, 2007 |
| A reduction-drive device has a first and a second reduction mechanism and distribution device. The first reduction mechanism has a planetary carrier, a planetary gear rotatably supported by the planetary carrier, an internal gear in mesh with the planetary gear and a sun gear. The fi |
| 7223192 |
Differential |
May 29, 2007 |
| A limited slip differential is provided with a rotatable casing for receiving input from an engine, a differential gear set of a bevel gear type and a pair of clutches. The differential gear set is provided with a pinion shaft supported in and rotated with the casing, a pinion gear r |
| 7223191 |
Power transmission system and operation method thereof |
May 29, 2007 |
| Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power. |
| 7216751 |
Torque transmission coupling |
May 15, 2007 |
| In order to form a torque transmission coupling to be compact, the present invention provides a torque transmission coupling (1) comprising input-output rotary members (57, 59) rotatably supported to perform input-output transmission of torque; a frictional engagement section (79) pr |
| 7210565 |
Torque transmission apparatus and case structure |
May 1, 2007 |
| In order to make it possible to shorten an entire length, a torque transmission coupling is provided with a rotating shaft (11) and a drive pinion shaft (17) for carrying out input and output transmission of a torque, and a torque control means (125) arranged between the rotating sha |
| 7094172 |
Differential and differential system |
August 22, 2006 |
| The differential includes a differential housing (7A, 7B). A torque transmission member (5A, 5B) is supported to a differential housing (7A, 7B) for rotating relative to the differential housing. A clutch system (13A, 13B) is configured to interconnect between the torque transmission |
| 7086978 |
Power transmission system and operation method therefor |
August 8, 2006 |
| Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power. |
| 7083033 |
Torque transmission apparatus |
August 1, 2006 |
| A torque transmission apparatus includes a clutch housing and a clutch hub, a frictional multi-plate clutch for transmitting torque between the clutch housing and the clutch hub, a pressurizing member for bringing the frictional multi-plate clutch into engagement by producing a thrust, a |
| 7081065 |
Differential apparatus |
July 25, 2006 |
| A junction at which the pinion shafts are connected to each other by themselves is formed in a portion of the rotational axis of an outer rotary member where the pinion shafts meet each other. Therefore, the positional relation of the pinion shafts without any substantial error is re |
| 7063193 |
Seal structure for relatively rotational members |
June 20, 2006 |
| A seal structure is disclosed as mounted in a coupling 1, exposed in the vicinity of a stationary member 14, with a dust cover 15 being mounted to a cylindrical member 19 for preventing foreign material from entering a gap between the coupling 1 and the stationary member 14, and a seal |
| 7056256 |
Differential apparatus |
June 6, 2006 |
| A differential locking section is provided between a pair of output members that respectively mesh with a pair of gears. Since, at least one of the output members is composed of a first output shaft member that meshes with the gear, and a second output shaft member rotatable with and |
| 6997294 |
Electromagnetic clutch device |
February 14, 2006 |
| An electromagnetic clutch 1 is disclosed having a magnetic flux loop 31 formed, in magnetic flux loop forming members 5, 7, 9, 11, 13 involving an electromagnet 5 and an armature 13, by the electromagnet 5 to allow the armature 13 to be operatively shifted to couple and uncouple a clutch |
| 6969333 |
Motor power train and method of assembling the same |
November 29, 2005 |
| A motor power train which includes a reducer for amplifying motor drive torque, a differential device with a clutch mechanism and a differential gear unit to allocate the drive torque to wheels, and a casing for housing them. The reducer includes a first shaft as an input shaft; a second |
| 6966863 |
Actuator |
November 22, 2005 |
| An actuator 1 is disclosed including a stationary member 15, a rotational member 17 disposed for rotating capability with respect to the stationary member 15, a movable member 19 disposed for movements with respect to the rotational member 17, a drive power source 25 rotating the rotatio |
| 6959799 |
Actuator and intermissive power transmission device therewith |
November 1, 2005 |
| An actuator for engagement and disengagement operation of a power transmission device is provided with a first plate being fixed, a second plate being movable in a direction of the engagement and disengagement operation so as to be engaged with the first plate, a third plate disposed |
| 6945895 |
Differential gear mechanism |
September 20, 2005 |
| A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output axes, comprising a first clutch, an annular plunger movable in a direction of the rotati |
| 6837821 |
Differential |
January 4, 2005 |
| The differential includes a differential casing configured to be rotatably driven by a motor under a driving force. The differential includes a differential mechanism which includes a pair of first and second side-gears for distributing a torque of the differential casing to first an |
| 6832972 |
Differential and differential system |
December 21, 2004 |
| The differential includes a differential housing (7A, 7B) A torque transmission member (5A, 5B) is supported to a differential housing (7A, 7B) for rotating relative to the differential housing. A clutch system (13A, 13B) is configured to interconnect between the torque transmission |
| 6827661 |
Clutch system and differential with same |
December 7, 2004 |
| The differential (13) includes a clutch system. The clutch system includes a clutch (41a, 43a) for being displaced to establish engagement thereof. The clutch system includes an actuator (61) for operating the clutch. The actuator includes a solenoid (63). The actuator a plunger (65, 67, |
| 6796412 |
Differential apparatus |
September 28, 2004 |
| Differential apparatus which includes input and output members rotatable relative to each other, a clutch mechanism for interconnecting them, an actuator and a cam mechanism. The clutch mechanism includes first and second clutch members rotating with the input and output members, res |
| 6770005 |
Power transmission system and operation method therefor |
August 3, 2004 |
| Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power. |
| 6755291 |
Wet-type friction clutch and electromagnetic friction clutch |
June 29, 2004 |
| A wet-type friction clutch plate which keeps lubricant on a frictional slide face, stabilizes frictional torque transmission and suppresses shuddering noise. The wet-type friction clutch plate has the frictional slide face on which a grid of grooves is formed. The frictional slide face |
| 6719110 |
Wet type friction clutch and electromagnetic clutch |
April 13, 2004 |
| A wet type friction clutch and an electromagnetic clutch is disclosed wherein a pilot clutch 61 is disposed in a magnetic flux path 95 of an electromagnet 57 and is kept between an armature 71 and the electromagnet 57. Upon excitation of the electromagnet 57, the armature 57 is retracted |
| 6705964 |
Power transmission system |
March 16, 2004 |
| A power transmission system includes an input shaft, a toroidal CVT arranged on the input shaft, a countershaft arranged parallel with the input shaft for transferring power output from the CVT to wheels, a power distributing device for distributing power from the countershaft to the |
| 6698562 |
Coupling for vehicle |
March 2, 2004 |
| A coupling for a vehicle includes a pilot clutch 15, a main clutch 13, a pressing system 21 and a coupling mechanism 17. The pilot clutch 15 generates a pilot torque and is operated by operating means 19. The main clutch 13 connects torque members 11 and 9 and transmits transmitted t |
| 6523633 |
Four-wheel drive vehicle power train |
February 25, 2003 |
| A first power train (T1) for driving a pair of front drive wheels (Wf1, Wf2) comprises a transmission (5) connected to an engine (3) and a front drive train (Df1) including a front final reduction gear (9) connected to the transmission and a front differential gear (15) connected between |
| 6446772 |
Coupling |
September 10, 2002 |
| There is provided with a first clutch. A second clutch is for controlling fastening and releasing operation of the first clutch. The first clutch and the second clutch are radially differently and axially correspondently positioned each other. |
| 6436002 |
Differential apparatus |
August 20, 2002 |
| A differential case has therein a bevel gear type differential mechanism, difference limiting main and pilot clutches, and a cam mechanism for increasing engagement force of the pilot clutch to be transmitted via a transmission member for actuation of the main clutch. Vehicular axles |
| 6413183 |
Power transmission apparatus |
July 2, 2002 |
| An outer rotational member has an inner wall surface and an outer wall surface. An inner rotational member is arranged inside the outer rotational member. Friction-clutch means is provided between the inner rotational member and the outer rotational member and is fastened by a thrust |
| 6209381 |
Method and system for chamfering and press therefor |
April 3, 2001 |
| In a vertical press that simultaneously forms chamfers at edges on both sides of a punched sheet material by using an upper chamfering punch and a lower chamfering punch, the lower chamfering punch is supported by conical disc springs piled on a support base. |
| 6206668 |
Fluid machine |
March 27, 2001 |
| A fluid machine comprises a rotor (7, 9) meshed with each other in concave and convex portions (23, 26) and (25, 24), and a casing (3) enveloping these elements within cylindrical portions (43, 45) of a rotor chamber (5) and having a flow inlet port (31) and a flow outlet port (33). The |
| 6116879 |
Fluid machine |
September 12, 2000 |
| A pair of rotors (1,3) includes tooth parts (7,9) with a cycloid tooth profile curve and tooth bottom pans (11,13), and are engaged with each other. A housing (2) includes rotor chambers (2a) for rotatably accommodating the rotors (1,3), a suction port and a delivery port. Tips of th |
| 6059683 |
Differential apparatus |
May 9, 2000 |
| A differential apparatus (7) comprises: a differential casting (21) rotated by an engine power; a plurality of pinion gears (65, 66) slidably housed in accommodation holes (63, 64) formed in the differential casing; a pair of side gears (35, 37) geared with each other via the pinion gear |
| 6027422 |
Switching synchronous apparatus for four wheel drive vehicle |
February 22, 2000 |
| A switching synchronous apparatus for a four wheel drive vehicle in which a drive force is transmitted to a driven side differential gear by connecting the drive force of a transfer capable of attaching and detaching the drive force is disclosed. The apparatus comprising a first rota |
| 6015361 |
Differential apparatus with two wheel/four wheel drive switching mechanism |
January 18, 2000 |
| A differential apparatus includes a differential casing, a pair of output side gears disposed in the differential casing, a differential mechanism distributing driving force of an engine, a clutch for operatively connecting the differential casing with the axles of the vehicle, an ac |
| 5938420 |
Fastening structure of rotor body and rotor shaft and fluid machine using this fastening structu |
August 17, 1999 |
| A fastening structure has a screw rotor fixing a rotor shaft to a shaft hole of a rotor body. A casing includes the rotor therein, and a positioning portion and a screw portion are arranged between the shaft hole and the rotor shaft. Press fit portions are arranged at both axial ends |
| 5890989 |
Differential apparatus for reducing friction and noise |
April 6, 1999 |
| A differential apparatus for a part-time four-wheel drive vehicle is provided. The differential apparatus includes an outer differential casing, an inner differential casing, a clutch member adjacent to the inner differential casing, a pair of dog clutches, a differential gear system |
| 5890984 |
Differential apparatus having helical oil distribution passages to radial oil passages |
April 6, 1999 |
| A differential apparatus (7) comprises: a differential casing (21) rotated by an engine power; a plurality of pinion gears (65, 66) slidably housed in accommodation holes (63, 64) formed in the differential casing: a pair of side gears (35, 37) geared with each other via the pinion gears |
| 5848950 |
Differential gear capable of deriving differential restriction force by frictional resistance wi |
December 15, 1998 |
| A differential gear transmitting force from an engine to a pair of wheels, includes a differential gear case receiving driving force of an engine and rotatably driven having a casing body and an end cover, a pair of side gears connected with the wheels respectively, pinion gears having a |
| 5806182 |
Method of processing screw rotor |
September 15, 1998 |
| A cast screw rotor has an opened lightening or reduced weight hole formed inside each thread portion. The opened hole is formed along torsion of the thread portion, and a shaft is inserted into an axial hole. The screw rotor is manufactured by a method in which each of the thread portion |
| 5772418 |
Screw type compressor rotor, rotor casting core and method of manufacturing the rotor |
June 30, 1998 |
| There are provided male and female rotors, which engage with each other at screw-shaped tooth trace portions formed on the rotor bodies; a compressor casing which houses these rotors and has a suction port on one side in the axial direction and a discharge port on the other side in the a |
| 5749801 |
Differential unit |
May 12, 1998 |
| A differential unit is disclosed which has a differential limiting function and which exhibits stable differential limiting characteristic even if the difference in the differential rotations is small. The differential unit has a differential case, pinion gears, side gears, a gear pump d |
| 5735765 |
Differential apparatus |
April 7, 1998 |
| A differential apparatus (7) comprises: a differential casing (21) rotated by an engine power; a plurality of pinion gears (65, 66) slidably housed in accommodation holes (63, 64) formed in the differential casing: a pair of side gears (35, 37) geared with each other via the pinion gears |
| 5711737 |
Differential apparatus |
January 27, 1998 |
| A differential apparatus includes a differential casing, a pair of side gears and plural pairs of pinion gears. The pinion gears are accommodated in bores formed in the differential casing, respectively. On the side wall of the differential casing a plurality of lubrication holes are for |
