Abstract: A 7-speed transmission for a motor vehicle, in particular for a sports car, includes an input or primary shaft, an output or secondary shaft, a first, a second, a third, a fourth, a fifth, a sixth and a seventh forward speed, as well as a reverse speed. In order to obtain a compact constructional design with a small transversal size and allow a sporty drive mode in the upshift from the first to the sixth speed, in which the shift process occur in an overlapping manner and almost without any interruption of the drive force, the eight speeds are combined in pairs into four shift groups, two of the four shift groups are arranged on the input or primary shaft and two on the output or secondary shaft, respectively, and at least between the first speed and the sixth speed adjacent speeds are arranged in different shift groups.

Abstract: A gear spindle includes a shaft having a first gear cavity at a first end, an oil delivery path for delivering oil to the first gear cavity and an oil return path for carrying oil away from the first gear cavity. A first seal assembly is associated with the first end of the shaft for limiting leakage of oil from the first gear cavity, the first seal assembly including a sealing interface having one side in fluid communication with the first gear cavity and an opposite side in fluid communication with a fluid delivery path. The fluid delivery path may be connected to a source of pressurized air for reducing pressure differential across the sealing interface.

Abstract: A ball screw which has a threaded nut arranged on a threaded spindle, a helical ball channel in which balls are arranged delimited by ball grooves of the threaded spindle and the threaded nut, a ball cage which receives the balls and a spring element which bears with one end against the threaded nut and with another end against the ball cage. The spring element is arranged axially adjacent to the ball cage in an annular gap delimited by the threaded nut and the threaded spindle.

Abstract: A transmission device includes a drive shaft and two driven shafts. The drive shaft is connected to a wheel and first engagement rotors are arranged therebeside so that the wheel is located therebetween and can rotate together with them. The first engagement rotors having an axial hole in which a driven shaft is rotatably arranged, the first engagement rotors are coupled or uncoupled with second engagement rotors coaxially arranged therebeside, by extracting or retracting, respectively, at least one mobile tooth rotatable in a seat of the first engagement rotors, each driven shaft being keyed to a second engagement rotor. Driving rotors are arranged around the driven shafts between the wheel and the first engagement rotors and are provided with a brake, so that relative rotation of the driving rotors with respect to the first engagement rotors causes extension or retraction of the mobile tooth according to the relative rotation direction.

Abstract: A mechanical four-speed gearbox/drive system for household appliances comprising two drive-outlets; each drive-outlet driven at two different speeds in the same rotational direction; a motor, motor shaft, first drive-outlet and second drive-outlet, with installation of one-way bearings in suitable places in the gear-train. The motor drives two drive-outlets and rotates in clockwise and counter-clockwise directions through three one-way bearings and two gear down systems to provide four different speed drives. When operating in hi-speed mode, the first drive-outlet is directly driven by the motor. When operating in lo-speed mode, the first drive-outlet is driven via the gear down system, with resulting increase in torque. Simultaneously, second drive-outlet is driven via second gear down system to provide two different speed drives. This gearbox is simple to construct and operable without expensive control electronics.

Abstract: A cable guide re-orders a plurality of cables. A first guide plate has a plurality of first guide holes that receive a plurality of cables in a first order. A second guide plate has a plurality of second guide holes that receive the plurality of cables in a different second order. An intermediate guide plate is located between the first and second guide plates. The intermediate guide plate has a plurality of intermediate guide holes. Each of the intermediate guide holes receives one of the plurality of cables and causes a change of direction in the cable to facilitate the change from the first to the second order. The intermediate guide plate may further include cable passages to allow some cables to pass through without changing direction. There may be more than one intermediate guide plate. The cables may change from a generally linear to a generally circular arrangement.

Abstract: A linear actuator is provided which is able to simplify its structure by adding a stopper function, too, to a detent mechanism and to prevent generation of radial load. The linear actuator comprises a ball screw mechanism, to which a rotational driving force is transmitted, for converting a rotational motion into a linear motion. The ball screw mechanism comprises radially projecting guide projections provided in a linear motion component, and a guide groove arranged in a securing portion facing the linear motion component and is engaged with the guide projections to guide the guide projections in an axial direction. The guide projection has a projection projecting by the predetermined length, while engaging into the guide groove, at a stroke end of the linear motion component and a locking portion provided in a rotary motion component is locked to the projection of the guide projection.

Abstract: A linear actuator is presented, having a drive shaft, a transmission connected to the drive shaft, and a spindle connected to the transmission. The drive shaft, the transmission and the spindle are connected in such a way that a rotational movement of the drive shaft is transmitted to the spindle via the transmission. The linear actuator also has a spindle nut arranged rotationally prevented onto the spindle, and an end stop detection unit for detecting that the spindle nut reaches an end position on the spindle. The end stop detection unit comprises an end stop detection shaft connected to the transmission in such a way that a rotational movement of the spindle is transmitted to the end stop detection shaft such that a rotational movement of the spindle is reflected by a rotational movement of the end stop detection shaft.

Abstract: A robot joint driving apparatus has an improved structure, a robot having the same, and a cable linkage method of the robot joint driving apparatus. In the robot joint driving apparatus, lines of a cable to drive a robot joint unit are connected plural times in parallel, thereby increasing torsional stiffness of the robot joint unit. Further, a cable fixing unit is provided on an output pulley, thereby preventing slippage of the cable on the output pulley. Moreover, the overall size of the robot joint driving apparatus is reduced due to an improved power transmission structure from a driving motor to the output pulley.

Abstract: The invention concerns a safety device (1) for an actuator comprising a connection means (2) allowing a connection to a releasable holding means (5). The connection means (2) is fixed via a sacrificing means (3) to a supporting means (4), and a resilient means (7) is acting between the supporting means (4) and a supporting portion (8). An extension means (9) is fixed to the supporting means (4) via the connection means (2). The sacrificing means (3) has a mechanical strength such that the sacrificing means (3) breaks when subjected to a force exceeding a predetermined force, such that the extension means is no longer fixed to the supporting means and that a re-connection of the supporting means (4) and the releasable holding means (5) is made impossible. The predetermined force is lower than the mechanical strength of the extension means (9) and the supporting means (4). A linear actuator (13) comprising the safety device (1) is also provided.

Abstract: A harmonic speed reducer for robots is provided with a frame, an annular circular spline, a cylindrical flexspline, and an elliptical wave generator. The frame has internal threads each tapped parallel to the center axis line, the threads each extending from a circular spline mounting seat to the inside of the frame. The internal thread in the circular spline mounting seat has a peripheral edge portion at an opening thereof with a recess. The recess is formed so as to have a diameter larger than a diameter of the internal thread.

Abstract: A control moment gyroscope assembly including, but not limited to, a rotor that includes a shaft, a primary rim and a web that connects the shaft to the primary rim. The rotor is made from a metal material and is adapted to spin about the shaft. The control moment gyroscope assembly further includes a secondary rim that is made of the metal material and that is disposed around the rotor. The secondary rim is configured to compress the rotor in the direction of the shaft.

Abstract: A remote controlled actuator includes a spindle for holding a tool, a spindle guide section of an elongated configuration, a distal end member rotatably supporting the spindle, and a drive unit housing connected to a base end of the spindle guide section. The distal end member is fitted to the spindle guide section for alteration in attitude. The spindle guide section includes an outer shell pipe, a rotary shaft, and guide pipe. Within the guide pipe, an attitude altering member is inserted to alter the attitude of the distal end member. A connection device detachably connects the spindle guide section with the drive unit housing.

Abstract: A speed change operation apparatus includes a pivotal body operatively connected to a trunnion shaft to be pivotally displaced in response to an operational displacement by an operational tool, a positioning body operatively coupled with the pivotal body so as to be pivotally displaced in response to a pivotal displacement of the pivotal body, a main urging mechanism for applying an urging force to the pivotal body via the positioning body for returning the pivotal body from an operational position to the neutral position, and an auxiliary urging mechanism for applying an auxiliary urging force to the pivotal body for returning the pivotal body from the operational position to the neutral position.

Abstract: A shaft part is formed with a rolling groove (5) on which rolling elements (4) roll. At least the rolling groove (5) is induction hardened with no generation of black colored oxidized scale after the induction hardening. A surface of the induction hardened rolling groove (5) is used “as is” as a rolling surface. The surface roughness Ra of the induction hardened surface “as is” of the rolling groove (5) is less than 1.0. The ratio of effective hardened depth of a hardened layer is between 0.15 and 0.45.

Abstract: A transmission includes an input coupled to reciprocate a lug along a stroke path. The lug is coupled between a shuttle and a persuader, the shuttle is coupled to drive an output in response to reciprocation of the shuttle along a drive path, and the persuader is coupled between the lug and the shuttle and is operable to change the stroke path between an inoperative direction relative to the drive path isolating the shuttle from the forcible reciprocation of the lug and an operative direction relative to the drive path transferring the forcible reciprocation of the lug along the stroke path to the shuttle imparting reciprocation to the shuttle along the drive path. Forcible reciprocation of the lug is transferred to the shuttle along an infinitely variable gearing range between the inoperative and operative directions of the stroke path of the lug relative to the drive path of the shuttle.

Abstract: A transmission device includes a gear case, a first gear, a second gear and a backlash adjusting mechanism. The first gear, the second gear and a backlash adjusting mechanism are received in the gear case. The first gear includes a shaft. The second gear is meshed with the first gear. Both of the first gear and the second gear are bevel gears. The backlash adjusting mechanism includes a resilient member and fastening member. The fastening member passes through the gear case. The resilient member resists the fastening member and an end of the shaft of the first gear, respectively. An elastic variation of the resilient member is changed or adjusted by the fastening member, such that a backlash between the first gear and the second gear is adjusted via the resilient member.

Abstract: A gear unit having a drive element with a first tooth structure, an output element with a second tooth structure, wherein the tooth structures are able to be brought into engagement cogging with each other to form a gearing in at least one engagement area of the second tooth structure. The output element has at least one uncoupling area, in which the cogging engagement of the gearing is uncoupled. The first tooth structure has at least one first modified tooth element and the second tooth structure has at least one second modified tooth element wherein by a movement of the drive element, synchronization of the second modified tooth element with the first modified tooth element is possible in order to create a change from the uncoupled state to the engagement state.

Abstract: The invention relates to a steering column for a motor vehicle, comprising a bracket (1) which carries an upper jacket unit (3) and a lower jacket unit (5), wherein the jacket units (3, 5) surround a steering shaft (8) rotatably mounted therein, and wherein the jacket units (3, 5) comprise an inner jacket tube (10) and an outer jacket tube (11) which surrounds the inner jacket tube (10) at least in some sections, said jacket tubes being mounted such that they can be displaced one inside the other in their axial direction by means of a plastic sleeve (6) made of thermoplastic which is located therebetween. Freedom from play is achieved in that the plastic sleeve (6) is inserted into the outer jacket tube (11) with a press fit, and in that the outer jacket tube (11) has at least one opening (12), in the region of which the plastic sleeve (6) is pressed against the inner jacket tube (10) by deformation.

Abstract: A Shift fork is provided for shifting gears of a transmission assembly of a gear box that includes, but is not limited to a basin for collecting splash oil. The basin includes, but is not limited to an outlet channel for guiding the collected oil away from the basin. By means of the basin splash oil can be collected and led via the outlet channel to nearly every place of the transmission assembly, where additional lubrication is wanted. This provides a better lubrication of parts of the transmission assembly with low effort.