Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8117945 | Hollow speed reducer A speed reducer capable of shortening a length in an axial direction of a turning structure by arranging a plurality of small-sized motors is provided. The hollow speed reducer 10 is a planetary gear apparatus having a crankshaft 11, a pinion 12... | 02/21/2012 |
| 8104375 | Differential gear unit for motor vehicles comprising an active control mechanism for the driving force distribution A differential gear unit for motor vehicles comprises a housing and, therein, a differential gear mechanism (8), two coaxial gear mechanisms and two controllable friction clutches, the coaxial gear mechanisms transmitting an additional torque to one or other ... | 01/31/2012 |
| 8028603 | Method for setting gear tooth profile in flat wave gear device on side where gears have same number of teeth In a flat wave gear device in which a flexible externally toothed gear and the rigid internally toothed gear have the same number of teeth, an arcuate tooth profile is imparted to a flexible externally toothed gear, a contact point C between tooth profiles of a flex... | 10/04/2011 |
| 8020470 | Harmonic gear drive A harmonic gear drive includes a flexspline and a rigid spline which are meshed with each other, and a wave generator which deforms the flexspline to displace meshing points between the flexspline and the rigid spline. The length of each contact part between the fle... | 09/20/2011 |
| 8011273 | Wave generator, wave gear device, and method of preventing reduction in efficiency of wave gear device A wave generator (4) of a wave gear device (1) is formed from a material in which only the minor axis-side portions (51, 52), which include the two end portions (51a, 52a) of an elliptical minor axis Lmin, has a large... | 09/06/2011 |
| 7966907 | Finger joint mechanism A finger joint mechanism (1) having two wave gear reduction drives (20, 30) disposed coaxially with each other, in which rotational force of a motor (40) is transmitted to a rotation input shaft (13) common to the drive gears through a dr... | 06/28/2011 |
| 7963190 | Helical gear sets A gear set for a transmission for use in limited space and capable of transmitting relatively large amounts of power with a small diameter of the gear sets, comprising a series of helical gear elements having stub shafts extending laterally from either side thereof,... | 06/21/2011 |
| 7946195 | Steering apparatus for vehicle A steering apparatus for a vehicle capable of executing a steer-by-wire (SBW) mode of steering road wheels by a steering mechanism mechanically disconnected with a steering device. The steering apparatus includes a clutch which is composed of a shaft that rotates to... | 05/24/2011 |
| 7891272 | Robotic harmonic flex-drive A robotic harmonic flex-drive has an outer generally cylindrical spline having inner diameter gear teeth and an inner generally cylindrical spline having outer diameter gear teeth concentric to the outer spline. A wave generator including a pair of rollers disposed ... | 02/22/2011 |
| 7882766 | Automatic torque-switching apparatus In an automatic torque-switching apparatus (1), a fixed member (12) of a reduction device (8) is attached to an apparatus housing (2) via a one-way clutch (9) so as to not rotate in the direction of torque acting on the fixed membe... | 02/08/2011 |
| 7819041 | Transmission ratio variable device and steering gear A variable transmission ratio apparatus for effectively preventing ratcheting between a flexible spline and a circular spline caused by a steering operation performing in a locked state. A variable transmission ratio apparatus includes a strain wave gear mechanism f... | 10/26/2010 |
| 7752943 | Actuator provided with wave reduction gear In an actuator (1) in which an angle detector (13) of a magnetic encoder for detecting the rotational position of a motor (3) is incorporated inside a wave reduction gear (5), detection signals from Hall elements (11a, 11... | 07/13/2010 |
| 7735396 | Wave gear drive having negative deflection meshing tooth profile A rigid internal gear and a flexible external gear of a wave gear drive are spur gears of module m. The number of teeth of the external gear is smaller by 2n (n is a positive integer) than that of the internal gear. The deflection of the major axis of the elliptical... | 06/15/2010 |
| 7721625 | Harmonic gear drive A harmonic gear drive includes: a rigid spline; a flexspline including an attachment portion, teeth, and a thin-walled flexible portion provided between the attachment portion and the teeth; and a member attached to the thin-walled flexible portion. The member is ma... | 05/25/2010 |
| 7698968 | Method for reducing input-side holding torque of wave gear device, and rotary actuator In a wave gear device provided with a cup-shaped flexible external gear, the difference in the direction of the thrust force applied to the wave generator during speed reduction or speed increase is used to reduce the input-side holding torque. During speed reductio... | 04/20/2010 |
| 7694607 | Wave gear drive with continuous meshing, high ratcheting torque tooth profile A wave gear drive comprises a circular rigid internal gear and a flexible external gear inside the rigid internal gear. A wave generator in the flexible external gear flexes the flexible external gear into an elliptical shape. The cross-section of the flexible exter... | 04/13/2010 |
| 7634954 | Device for creating an especially large transmission ratio for actuating drives or actuators A device for creating a large transmission ratio for actuating drives the device comprising a first shaft supported rotatably about a first rotation axis, an eccentric supported by the first shaft, a transmission part, which is provided with a gear rim including a f... | 12/22/2009 |
| 7552664 | Harmonic drive gear assembly with asymmetrical wave generator and associated flexspline A wave generator has a circular spline, a flexspline inside the circular spline and a plug inside the flex spline. The plug is asymmetrical and is preferably formed to comprise a semi-elliptical first portion and a semi-cylindrical second portion. The diameter of th... | 06/30/2009 |
| 7549357 | Ratio changing method and apparatus A ratio changing method and apparatus includes, in a hypocycle arrangement, an input drive wheel (2), an output drive wheel (3) and a transfer ring (1). The input drive wheel (2) drives around the exterior of the transfer ring (1).... | 06/23/2009 |
| 7530292 | Wave gear drive having high ratcheting torque tooth profile A wave gear drive (1), wherein a rigid internal gear (2) is formed in a conical gear and a flexible external gear (3) is formed in a spur gear with a module m. The number of the teeth of the external gear (3) is reduced by the quantity of... | 05/12/2009 |
| 7523687 | Conveyor drive including a fluid coupling and a step-up gearbox A longwall conveyor drive including a motor including a motor output shaft, a drive sprocket, and a gearbox drivingly connected to the drive sprocket. The drive also includes a fluid coupling drivingly connected to the gearbox, and a step-up gearbox located between ... | 04/28/2009 |
| 7484436 | Wave gear device A wave gear device, wherein, when a wave generator is in a low speed rotating state, a rolling bearing state is formed by a wave bearing and the wave generator and a flexible external gear are held in a relatively rotatable state and when the wave generator is in a ... | 02/03/2009 |
| 7438465 | Assembly element including two superposed strip shaped elastic structures and timepiece fitted with the same Assembly element (18) made in a plate of brittle material, including an aperture (32) provided for the axial insertion of an arbour (26), the inner wall (33) of the aperture (32) including elastic structures (34), which are ... | 10/21/2008 |
| 7428857 | Gear, speed reduction gear using the same, and electric power steering apparatus using the same A gear composed of a polymer blend or a copolymer of PA66 and PA6 which contains a part having a PA66 molecular structure and a part having a PA6 molecular structure in a weight ratio of PA66/PA6=99.9/0.1 to 95.0/5.0 is excellent in durability as well as heat resist... | 09/30/2008 |
| 7421990 | Harmonic drive camshaft phaser A camshaft phaser comprising first and second harmonic gear drive (HD) units disposed in back-to-back relationship. Each HD includes an elliptical wave generator (WG), a flexspline (FS) deformable by the WG, and a circular spline (CS) for engaging the FS. A dynamic ... | 09/09/2008 |
| 7409891 | Drive unit with reducer To provide a harmonic drive gearing with high degree of freedom in terms of layout. A harmonic drive gearing 10 includes a circular spline 1′, having outer teeth formed on an outer peripheral surface; an flexible spline 2, positioned at the ou... | 08/12/2008 |
| 7392775 | Helical cam device and method A helical cam device for use with a wide variety of applications generally includes a first cam component, a second cam component and an axial guide. The cam components each have a helical cam track located on an axial end, so that coaxial alignment of the two cam c... | 07/01/2008 |
| 7377243 | Adjusting mechanism for a camshaft arrangement In an adjusting mechanism which is connected to first and second camshafts of a camshaft drive arrangement including a control device for adjusting the phase position of at least one of the camshafts relative to a crankshaft of an internal combustion engine, and hav... | 05/27/2008 |
| 7357089 | Automatic thread cutting device for sewing machine The present invention is an automatic thread cutting device for a sewing machine, which is equipped with an automatic thread cutting device on the position that a needle thread passes through. The automatic thread cutting device comprises a main body that is equippe... | 04/15/2008 |
| 7354371 | Motor-incorporated hypocycloid-type speed reducer A motor-incorporated hypocycloid-type speed reducer includes: a motor housed in a case; a first larger internal gear; a second smaller internal gear coaxial with a motor shaft; an output shaft coaxial with the motor shaft, the output shaft being provided with the se... | 04/08/2008 |
| 7339298 | Compliant motor driven variable electrical device A motor driven electrical device includes: a variable electrical device having a rotational variable control; a first support plate positioned above the variable electrical device; a motor support plate pliably attached to the first support plate using a pliable sep... | 03/04/2008 |
| 7337497 | Magnetic hinge A magnetic hinge defining a hinge axis includes first and second hinge plates of non-magnetic material and first and second magnets disposed therein, respectively, for movement therewith. The plates are generally parallel and independently pivotable about the hinge ... | 03/04/2008 |
| 7328632 | Wave gear drive having widely engaging tooth profile A wave gear drive, wherein a rigid internal gear is formed in a spur gear with a module m and a flexible external gear is formed in a conical gear having an opening side front end with a module m. The number of the teeth of the external gear is reduced by the quanti... | 02/12/2008 |
| 7297087 | Micro gear system operating according to the strain wave gear principle with hollow shafts A micro gear system, operating according to the principle of a strain wave gear system, a Wolfrom gear system, or a similar planetary gear system comprises at least one sun wheel (14) and at least two planet wheels (16) meshing with the sun wheel (1... | 11/20/2007 |
| 7296495 | Mechanical system for power change between the input and output thereof The system includes at least two power disc elements, each mounted for rotation on a central shaft which is typically fixed. The first power disc element includes a first peripheral gear portion by which the first power disc element may be turned by an input assembl... | 11/20/2007 |
| 7284634 | Electric power steering apparatus An electric power steering apparatus comprises a rotary shaft member connected to a steering wheel, an elongate member, a rack-and-pinion mechanism, a ball screw mechanism constructed of a screw member, a nut member and a multiplicity of balls interposed between the... | 10/23/2007 |
| 7274805 | Method of driving surveillance camera by using rotary electric machine There is no surveillance camera system optimum for monitoring an important monitor place by a surveillance camera mainly for crime prevention day and night without humans in attendance, which can automatically monitor the place without humans in attendance and, when... | 09/25/2007 |
| 7270296 | Small-size high-speed transmission system for use in microturbine-powered aircraft A transmission system that is used in conjunction with a microturbine engine for propelling an aircraft body, such as a propeller-based fixed-wing aircraft or a rotor-based vertical lift aircraft, or for a wide variety of other applications. The output shaft of the ... | 09/18/2007 |
| 7258643 | Device for actuating a reciprocating recovery means for underground fluid A device for actuating a reciprocating recovery apparatus for recovery of underground fluid. The actuating device has a centrally aligned input component, that transversely receives an output component through a central aperture, and is engaged with a driving mechan... | 08/21/2007 |
| 7258037 | Gear protected against overloading The invention concerns a gear for precision devices comprising at least two mutually co-operating toothed wheels (10, 14). The teeth (12, 16) of the two wheels have the same thickness (e) and the teeth of one of them (10) are provided with a rad... | 08/21/2007 |
