Abstract: The present invention provides an indexing device for a turntable which is provided with a plurality of roller followers arranged at equal angular intervals; a cam component is provided on one side of the turntable. The cam component is provided with a first side rib wall with a continuous cam curved surface in a first direction and a second side rib wall with a continuous cam curved surface in a second direction, and the first side rib wall and the second side rib wall face opposite sides to form a cam groove with a variable groove width for guiding the movements of the roller followers and rotating the turntable; wherein the first side rib wall and the second side rib wall can compress on at least one pair of the roller followers of the turntable symmetrically in the first and second directions, so as to effectively eliminate the backlash problem between the cam component and the roller followers and improve the positioning accuracy of the turntable.

Abstract: The present invention is to provide a motor-driven actuator that can prevent generation of hitting sound due to rattling of an output shaft of a motor. The motor-driven actuator is equipped with a motor with an output shaft, worm attached to the output shaft, and rotation member with a worm wheel engaging with the worm inside a case, wherein a bearing member equipped with a regulating face adjacent to a top end of said output shaft and intergrading by biasing force of a spring in a manner said regulating face pushes the top end of said output shaft into the direction of thrust is provided.

Abstract: A device for linearly moving a useful mass is described. Typically, when a large useful mass is moved, relatively large forces are transferred by a spindle or a toothed rack to the corresponding machine or machine frame. These forces can be compensated by moving a compensating mass in the opposite direction of the useful mass.

Abstract: A window wiper system for an automotive vehicle has an electromagnetic device, a rotatable member and a window wiper oscillating mechanism. In another aspect of the present invention, the electromagnetic device is an electric motor which operates in a unidirectional manner to oscillate a window wiper assembly back and forth in a normal window wiping range. The electric motor and rotatable member then reverse rotational direction to move the wiper assembly to a park position offset from the normal window wiping range.

Abstract: A multi-functional apparatus for use in an automotive vehicle employing multiple tracks has a housing, a rotatable member located in the housing, an electromagnetic device and multiple tracks. The electromagnetic device may be an electric motor which operates in a unidirectional manner to oscillate a window wiper assembly. The electric motor and rotatable member then reverse rotational direction to move the wiper assembly to a park position, allowing the actuation of an intermittent motion mechanism.

Abstract: A braking device for a wheelchair having at least one wheel and a frame having siderails adjacent the wheel is provided with a brake assembly surrounding the wheel for clamping and braking the motion of the wheel and with a connecting and mounting assembly connected to the brake assembly which mounts the brake assembly onto the siderail forward of the wheel and positions the brake assembly forward of the wheel parallel to and aligned with the axis of rotation of the wheel. Also provided is a brake actuating member connected to the mounting assembly which actuates the brake member. Still further, a locking member is provided adjacent the brake actuating member for locking the actuating member in position when the brake member is clamped to the wheel. The invention also discloses a structure for braking and clamping two wheels of a wheelchair with one brake actuating member.

Abstract: Apparatus for affecting positional adjustment of a machine member has an adjustment screw nonrotatably connected to the machine member and screwed into a nut formed as a worm wheel. The worm wheel, meshes with a worm, connected by a worm shaft to an actuator assembly for rotating the worm. The worm shaft is rotatably and axially displaceably mounted in a housing in which the worm wheel is rotatably mounted and the worm shaft is rotatably and axially non-displaceably mounted in a slider, which is guided in the housing for movement in the axial direction of the worm shaft. The slider is reciprocable by a fluid-operable piston-cylinder unit to an extent which corresponds to the desired adjustment of the screw.

Abstract: A mechanical drive, especially a stepping drive which can be driven by a drive shaft (14) for the conversion of a rotary drive movement to an output rotary movement which follows a given law of movement and can be taken from an output shaft (16), is provided with a spring-biased safety coupling (22; 26; 28) which disengages upon overload. The spring (30) biasing the safety coupling is supported on a biasing element which is mounted in the drive casing (12) for movement by a given amount in the direction of an increase or reduction of the spring bias, and which is part of the output of a cam drive whose cam is coupled co-rotationally with the drive shaft or output shaft (14 and 16, respectively).

Abstract: A pivotable control level disposed between a pair of spaced plates, with a motion resisting element mounted on the lever and compressed by the plates to provide a constant resistive force or "feel" to the system operator. A separate adjusting mechanism selectively increases or decreases the amount of compression exerted by the plates on the element to either increase or decrease the resistive force felt by the operator.

Abstract: An internal overload clutch assembly is provided for connecting rotating and rotatable members during normal operation and for disconnecting same when a maximum predetermined torque is exceeded, all of the operating components being mounted within an enclosed housing and including a rotatable member which is rotatably mounted within the housing and has output means extending outside the housing to perform mechanical operations. A rotating member is rotatably mounted on the rotatable member in the housing and is operatively connected to a power source for predetermined rotational movement thereof.

Abstract: The present invention relates to a driving device of platen used in printing devices such as typewriters, printers, etc., which is equipped with a motor, a first gear adapted to transmit the output from this motor and provided with notches on part thereof, a second gear which is intermittently driven by continuous rotation of this first gear and a platen driven through this second gear. A pawl holds the platen in place, but allows manual rotation thereof.

Abstract: A device converts the continuous rotary motion of a drive shaft into the intermittent rotary motion of a driven shaft, in particular with intermittent rotations of an amplitude of 180.degree.. The device comprises a plate keyed to the driven shaft, one side of which is provided with a plurality of movement elements spread over a given circumference, and a drum whose axis is perpendicular to the axis of the plate, keyed to the drive shaft and provided peripherally with a plurality of tracks.The tracks engage the movement elements, during the rotation of the drum, alternately, in pairs, on the opposite sides of one and the same movement element and, individually, on subsequent pairs of movement elements.

Abstract: An intermittent feed member adapted for an intermittent feed mechanism comprises a shaft provided having a plurality of individually groove portions which are formed in its outer periphery along the circumferential direction. Each of the groove portions has a bottom portion extending straightwardly. These groove portions have a rather small lead angle and are successively staggered axially so that their inside portions may communicate with one another, whereby a single helical groove is formed.

Abstract: An intermittent drive member comprises a shaft with a spiral groove formed in the outer periphery of the shaft. The spiral groove includes a plurality of groove portions each having a linear bottom portion with a lead angle of zero degrees and a plurality of chamfered portions. The groove portions are successively formed by being axially shifted one after one along the shaft, and each of the chamfered portions forms the connection between adjacent groove portions.The intermittent drive member is employed in a mechanism which includes an electric motor for driving the shaft and a movable member having a tip end portion slidably fitted in the spiral groove so that the movable member is displaced when the shaft is rotated. The shaft is rotated to move the movable member in a predetermined direction when the tip end portion is in each of the chamfered portions, while the motor is deenergized to stop the movement of the shaft when the tip end portion is in each of the groove portions.

Abstract: A ridge spirally wound around an outer peripheral cam is held between each pair of followers of a rotatable body including a plurality of such followers planted therearound at equal intervals. The ridge of the outer peripheral cam consists of a gentle slope portion having a minute but substantial lead angle other than zero degree and steep slope portions having large lead angles and being continuous from the gentle slope portion at opposite ends thereof. The steep slope portions at opposite ends of the ridge are juxtaposed to each other in parallel relationship. The rotatable body is rotated at a high speed when the followers are engaged with the steep slope portions but rotated at a slow speed when the followers are engaged with the gentle slope portion of the ridge, as the outer peripheral cam is rotated. The output shaft is connected to the rotatable body. The outer peripheral cam is driven by a control motor adapted to be stopped at a desired angular position.

Abstract: Stepping drive mechanism for converting a constant input rotatory movement to a linear movement of a given length accelerated first from zero, then continuing at constant velocity, and finally decelerated back to zero, in which the constant input rotatory movement introduced into the drive of the mechanism is transmitted to cylindrical driving cams having indexing grooves provided in their cylindrical circumferential surface, which are engaged by an indexing pin provided on a carrier component coupled with the drive of the mechanism. The indexing pin carrier component has the form of a circular disk mounted for rotation about its central axis, on each of whose opposite flat sides a driving cam is provided, one associated with the acceleration-deceleration phase and one with the constant-velocity linear movement phase. The cams each have an axis of rotation disposed at right angles to the central axis of the indexing pin carrier component, in whose indexing grooves an associated indexing pin engages.