Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7393301 | Gear driven direct differential cross A drive axle assembly is provided in which the differential cross-shaft supporting the differential gears is driven directly by the ring gear. The assembly reduces loading on the differential case to which the ring gear is attached thereby enabling the use of low ca... | 07/01/2008 |
| 7364528 | Inverted portal axle configuration for a low floor vehicle An axle system includes an axle shaft offset located within an axle center beam housing. The axle shaft is located in a recess in a top wall of the axle center beam shaped with slopes to maximize clearance to the bottom of the vehicle floor panels. The pneumatic bra... | 04/29/2008 |
| 7258032 | Double clutch transmission Engine torque selectively inputted through first and second input shafts is received and changed selectively by first and second output devices respectively having first and second output shafts. A reverse driven gear is axially offset from drive gears on the first ... | 08/21/2007 |
| 7204782 | Axle assembly An axle assembly including a housing, a tire supporting hub mounted for rotation with respect to the housing, a drive axle and a planetary unit for coupling the drive axle to the tire supporting hub. The planetary unit includes a sun gear, at least one planet gear a... | 04/17/2007 |
| 7150694 | Power take-off unit for four-wheel drive vehicle A full-time power take-off unit is equipped with a dual-mode bi-directional overrunning clutch and a shift mechanism to establish all-wheel drive and part-time four-wheel drive modes. Further, the power take-off unit includes a disconnect clutch that is controlled b... | 12/19/2006 |
| 7140456 | Easy hold power auger A cutting auger has a main auger blade and a front subsidiary coaxial blade each having a drive core and a helical auger flight carried on the drive core for rotation about a longitudinal axis of the drive core with a cutting edge at an axial end face of the auger f... | 11/28/2006 |
| 7121973 | Methods and apparatus for minimizing backlash in a planetary gear mechanism A planetary gear system includes a planetary gear assembly having a first planetary gear, a second planetary gear rotatable relative to the first planetary gear, and a torquing mechanism. The torquing mechanism generates a torsional spring force of the planetary gea... | 10/17/2006 |
| 7101299 | Starter with planetary reduction gear device In a planetary reduction gear device of a starter, a planet carrier forms gear shafts and planetary gears are rotatably supported by the gear shafts through bearings. The planet carrier further forms waste shafts projecting in a direction same as that of the gear sh... | 09/05/2006 |
| 6964155 | Turbofan engine comprising an spicyclic transmission having bearing journals A planet gear journal for an epicyclic gear system is asymmetrically formed to compensate for carrier twist. The asymmetry may be between a pair of opposed outwardly open annular channels inboard of a bearing surface of the journal. A particular application is the p... | 11/15/2005 |
| 6902508 | Helicopter mainshaft assembly and drive assembly including the same A helicopter mainshaft for use with a plurality of planet gear assemblies includes an elongated shaft having first and second opposed ends and a midsection located between the first and second ends. The shaft defines a shaft axis extending through the first and seco... | 06/07/2005 |
| 6796922 | Planetary gear device A planetary gear 5 is contacted at its at least one tooth of all its teeth 51n with an end edge 23d facing an inner releasing part 23c of an inner peripheral surface of a receiving hole 23a irrespect... | 09/28/2004 |
| 6783478 | Compound differential planetary gear assembly A compound differential planetary gear assembly (50) includes a sun gear (52), a plurality of planet gears (53) engaging the sun gear, a plurality of first ring gears (54), and a plurality of second ring gears (55). Each of the sec... | 08/31/2004 |
| 6749532 | Electric drive for a vehicle Electric drive for a vehicle includes a housing that is stationary in relation to a vehicle chassis or frame. A motor housing is arranged in the housing. A stator and a rotor are arranged in the motor housing. The rotor and the stator are rotatably mounted. The moto... | 06/15/2004 |
| 6164844 | Power transmission apparatus The invention is directed to an engaging mechanism. The engaging mechanism comprises a cam element which moves upon modification of an engaging position, a cam follower abutted against a cam surface of the cam element, a detecting element for detecting a ... | 12/26/2000 |
| 6164812 | Electric food processor having at least three mutually concentric output drives The electric food processor has a housing in which there is disposed an electric motor with a motor shaft. The motor shaft, via a gear mechanism, drives three or more concentric output drives at different rotational speeds. The common axis of rotation of ... | 12/26/2000 |
| 6122984 | Shaft phase control mechanism A phase control mechanism controls phase relationship between two shafts. The phase control mechanism may be used to control various mechanical devices such as the pitch of propellers of aircraft and boats, the pitch of power producing windmills, opening ... | 09/26/2000 |
| 6017288 | Final drive for a belted machine A final drive for a belted machine including a rotatable drive member located between the hubs of a drive wheel assembly of the machine for connection in driven communication with a power source and a pair of planetary gear sets located between the hubs, ... | 01/25/2000 |
| 5711740 | Mechanical clutch for planetary-type gear reduction unit The present invention is directed to a two-speed gear reduction unit and a shift mechanism for establishing two distinct speed ratio drive connections between an input member and an output member. More specifically, the shift mechanism includes a clutch a... | 01/27/1998 |
| 5679089 | Bicoupled contrarotating epicyclic gears A compact bicoupled contrarotating epicyclic gear is provided. The gear iudes a rotatable input shaft for providing an input-torque, a first-stage epicyclic gear, a second-stage epicyclic gear mutually drivably coupled to and in axial alignment with the ... | 10/21/1997 |
| 5676534 | Gearing by definition a dveljagimmal A dveljagimmal device (1) serving as a control mechanism and a gearing suitable for use in conjunction with a rotary machine of the "cat and mouse" type. The device (1) comprises a stationary housing (2) from which extends a first (3) and second (4) shaft... | 10/14/1997 |
| 5674147 | Transmission system A sub-transmission of a transfer unit includes a shift sleeve that moves to a neutral position N where it does not engage with a high-speed gear set to an input shaft or a low-speed gear set to a deceleration system, and thereafter engages with the high- ... | 10/07/1997 |
| 5556355 | Transmission with planetary multi-gear members An improved transmission for transferring torque. First and second gears are each configured for integral, rigid attachment to first and second torque-bearing bodies, respectively. A third gears is disposed in simultaneous meshing engagement with the firs... | 09/17/1996 |
| 5540629 | Mechanism for conteracting reaction torque in a powered, reversible, hand-held rotary driver A reversible hand operated rotary power tool contains an internal mechanism for reducing the reaction torque that would otherwise be exhibited directly upon the housing, and hence imposed upon the hand of the operator. The mechanism is bidirectional, and ... | 07/30/1996 |
| 5510073 | Planetary gear for a multiple-screw extruder A planetary gear for a multiple-screw extruder includes a circular stationary housing having internal teeth, a sun wheel formed from at least one toothed portion of a spindle, and a plurality of main planet wheels formed from at least one toothed free end... | 04/23/1996 |
| 5452643 | Hydraulic power drive unit A hydraulic power drive unit (36) including a linear hydraulic piston cylinder unit (64) with a set of longitudinally spaced gear teeth (84) in the form of a rack. A pinion gear (86) is operatively engaged and driven by the rack (84). A differential which... | 09/26/1995 |
| 5413517 | Action mechanism for doll A doll action mechanism which comprises a plurality of movable members for a doll or the like, a plurality of rotational drive sources arranged outside of the doll or the like, and a plurality of drive shafts individually connected to the rotational drive... | 05/09/1995 |
| 5354246 | Mechanism in a powered hand-held rotary driver for counteracting reaction torque A powered hand-held rotary tool adapted for preventing an externally manifested reaction torque upon the hand of an operator consists of a housing, a rotor adapted to be driven for rotation relative to the housing, and a planetary differential mechanism h... | 10/11/1994 |
| 5267489 | Drive axle assembly for use in tandem axle arrangements and pinion shaft subassembly therefor A drive axle assembly and subassembly for use in tandem driving axle arrangements has a removable drive pinion shaft subassembly. An input shaft is journalled in an axle housing and is coupled to an output shaft also journalled in the housing by an inter-... | 12/07/1993 |
| 5238461 | Reactionlless differential rotary driver having optimized output torques A differential rotary driver includes a power input shaft, a differential gear mechanism arranged coaxial to the power input shaft and having two output gears with mutually opposite rotations, and a housing which rotatably supports both input shaft and di... | 08/24/1993 |
| 5142989 | Propelling mechanism and traveling device propelled thereby A propelling mechanism for traveling through piping comprises: a motive power device; a plurality of sun gears driven in rotation by the motive power device; at least two planet gears meshed with each one of the sun gears and rotatably supported at specif... | 09/01/1992 |
| 5133698 | Power driven actuator system The problem of reducing the number of parts and reducing the manufacturing costs of actuator arms in a power driven actuator system of a type including a planetary gear train (42), is solved by providing an elongate torque shaft (40) coupled to the gear t... | 07/28/1992 |
| 5111562 | Spindle apparatus for holding a workpiece A spindle apparatus for holding a workpiece for machining includes a stationary support structure and preferably multiple rotary spindle members for holding individual workpieces. Each rotary spindle member is mounted in a spindle carriage that is rotatab... | 05/12/1992 |
| 5106346 | Planetary gear system with a set of gears, particularly for devices for coating substrates Planetary gear system including one set of gearwheels 11, in particular for devices for coating substrates 3, 3', . . . in a high-vacuum coating chamber where a drive shaft 9 supported and guided in a stationary bearing 1A is provided with a radially exte... | 04/21/1992 |
| 5088969 | Bifurcated transmission drive A bifurcated transmission drive includes one input shaft and at least two output shafts. The input shaft drives a planetary differential gear having two output elements. One output element drives one output shaft through a first gear train while the other... | 02/18/1992 |
| 5083989 | Drive transmissions A drive transmission which is particularly suitable for ship propulsion, comprises nested, contra rotating propeller shafts which in one example are driven by a single input shaft and which transmits contra rotating drives to the shafts via respective pla... | 01/28/1992 |
| 5033997 | Actuator without through shaft An actuator (10) comprises a housing (40) with movable actuating arms (22, 27, 28) adapted to be attached to a part to be moved. A reduction gear mechanism (14, 15) is held within the housing (40) in such a manner that it is axially and radially retained ... | 07/23/1991 |
| 4976669 | Dual output planetary gear system A gear system for driving a pair of rotary loads, such as a pair of helicopter rotors operating in ambient air, with a single rotary input comprises a planetary gear train, the sun gear of which is driven by the rotary input, and the planetary gear carrie... | 12/11/1990 |
| 4964844 | Gearbox arrangement for driving coaxial contra rotating multi-bladed rotors The invention relates to a gearbox arrangement for driving a first multi-bladed rotor and a second coaxial multi-bladed rotor in opposite directions. The gearbox assembly comprises a first epicyclic gear arrangement and a coaxial second epicyclic gear arr... | 10/23/1990 |
| 4903518 | Roll driving apparatus for rolling mill A driving apparatus in which power of a single motor is distributed to two shafts by a cam roller, whereupon the power quantities of the respective shafts are transmitted to working rolls through speed reducers. By employing planetary reduction gears of the in... | 02/27/1990 |
| 4879924 | Gearing for driving the rolls of a roll train The invention concerns a gear unit for driving the rolls of a roll train with a number of consecutively arranged roll stands. This gear unit has planetary gear sets at at least one output shaft, which are located one behind the other at short distances. D... | 11/14/1989 |
