2293 results about "Centre of rotation" patented technology

A self-balanced adjustable mounting system for a flat panel display. A display interface having a hollow, semi-spherical shell portion is attached to the flat panel display. The semi-spherical shell is formed with a generally constant radius of curvature. The center of the radius of curvature is disposed proximate the center of gravity of the flat panel display with the display interface attached. The display interface is received in a guide structure that has a bearing portion engaging the outer surface of the semi-spherical shell, and a second bearing portion engaging the inner surface of the semi-spherical shell through an aperture formed in the semi-spherical shell. The semi-spherical shell is guided between the first and second bearing portions so that the flat panel display and device interface are generally rotatable about the center of the radius of curvature of the semi-spherical shell. The display is self balancing in virtually any position in the range of travel of the device due to the location of the center of rotation proximate the center of gravity.

A toroidai type continuously variable transmission wherein a rolling member is clamped between rotary members; and wherein a rolling face of rotary members being opposed to each other has a curved face, in which its sectional face along the plane including a center axis of rotation is shaped into an arc, in order to allow said rolling face of said rolling member inclining against the center axis of the rotation of said rotary member, characterized by: an oiling hole formed on the portion on the center side of the rotation in said rolling face of the rotary members being opposed to each other, or on the portion on the center side of the rotation leading to said rolling face; and the oil passage for feeding the lubricating oil to the oiling hole, formed on the center side of the rotation in said rotary member, with being communicated with the oiling hole.

A system and method for providing visual assistance through a graphic overlay super-imposed on a back-up camera image for assisting a vehicle operator when backing up a vehicle to align a tow ball with a trailer tongue. The method includes providing camera modeling to correlate the camera image in vehicle coordinates to world coordinates, where the camera modeling provides the graphic overlay to include a tow line having a height in the camera image that is determined by an estimated height of the trailer tongue. The method also includes providing vehicle dynamic modeling for identifying the motion of the vehicle as it moves around a center of rotation. The method then predicts the path of the vehicle as it is being steered including calculating the center of rotation.

A tunable transmissive grating comprises a transmissive dispersive element, a reflective element, and an angle θ formed between the two elements. A first optical path is formed according to the angle θ, wherein light dispersing from the dispersive element is directed onto the reflective element and reflects therefrom. At least one element is rotatable about a rotational center to cause a second optical path and thereby tune the wavelength of the light reflecting from the reflective element. Both elements can be rotatable together around a common rotational center point according to certain embodiments, and/or each element can be independently rotated around a rotational axis associated only with that element. According to some embodiments, the relative angle θ formed between the elements is held constant; however, in other embodiments θ can vary.

A substrate processing apparatus can align a substrate with a high precision and a high speed by monitoring a mark formed on a surface of the substrate; operating an amount of misalignment between the center of the substrate and a rotation center of a substrate support member; determining a presence of the misalignment and adjusting the substrate such that the center of the substrate coincides with the rotation center of the substrate support member.

A versatile turbine suitable for both hydraulic and pneumatic applications. The turbine's blades are affixed to the inner surface of a cylindrical shell which is free to rotate about an outside supporting structure. Rotational energy is transferred from the outer surface of the rotating cylindrical shell, usually by means of a gear; however, there may be applications better suited for a pulley means of transfer. The vacant central axis of rotation can be closed, by incorporating taller blades to achieve a larger surface area, resulting in greater efficiency, or open, by means of shorter blades forming a hole with the distal edges of the blades, to allow for passing fish and or debris to safely exit. The preferred embodiment further includes a means for electricity generation, water purification, and hydrogen production.

A lens (16) is rotatably provided inside a dome cover (22). The lens (16) is supported so that the center of rotation can be moved from the center of a dome to a position apart therefrom in the zenith direction. A lens moving mechanism for moving the lens (16) according to a rotation in the tilt direction of the lens (16) may be provided. The lens moving mechanism may be a cam structure. The cam structure is set so that the rotation axis of the lens (16) is held at the center of the dome in a predetermined center hold angle range corresponding to the direction of an elevation angle, and that the rotation axis of the lens (16) is moved from the center of the dome in the zenith direction at angles lower than the center hold angle range. Good images can be obtained even when shooting in the direction of a depression angle.

Head position control is implemented in a disk drive for the case in which a disk is assembled into the disk drive after a precise track is recorded onto it using an external apparatus, which is capable of high-speed access even if there is eccentricity between a track defined by servo information and the center of rotation of the track. Two phase servo bursts consisting of servo information are recorded onto each of the servo information regions of a disk surface, in mutual alternation, the strength ratio between signals detected from these two phase servo bursts being used to determine to which side the head is displaced. By performing control so that this strength ratio is a prescribed value at each angular position, control is achieved so that the head moves along a circular path of rotation, even if there is eccentricity in the servo circular path defined by the recorded servo information with respect to the center of rotation.

A bicycle rear wheel suspension system includes an upper link and a lower link both pivotally attached to the frame and to a rear stay member. An instantaneous center of rotation of the rear stay member is defined at an intersection between an upper axis extending through first and second pivots of the upper link and a lower axis extending through third and fourth pivots of the lower link. Throughout a travel distance of a shock absorber of the suspension system, the instantaneous center of rotation remains below an average chain torque line of the bicycle, the lower axis remains above an axle axis extending through the rear wheel axle, and a portion of the lower axis defined between the third and fourth pivots extends below the average chain torque line.

The present invention relates to an axial adjustable, rotary brake device using eddy current resistance, having an annular rotating conductive reaction member fastened on a central axle, having a frame, and fitted with permanent magnets disposed on either one side or both sides of said member, wherein the magnets produce a magnetic field between the magnet arrays, and through the member. Relative motion of the member and magnets produces eddy current resistance opposing the movement of the member. The magnets are mounted such that their respective positions relative to each other and thus to the intermediate conductive member can be changed by an adjusting Structure to increase or decrease the space between magnets and member, (air gap), distance from the rotational center or their relationship to each other. Various other configurations for changing the spatial relationship of magnets and members are presented which can be employed to produce many embodiments and variations of the present invention.

An actuator includes a stage having a first direction and a second direction perpendicular to the first direction and seesawing around a third direction perpendicular to the first direction and the second direction with respect to a rotation center axis placed along the first direction. A first support portion supports a seesaw motion of the stage. A base facing the stage under the stage at a predetermined interval is supported by the first support portion. A stage driving portion has a plurality of first driving comb electrodes and a plurality of first stationary comb electrodes corresponding to the first driving comb electrodes which are respectively formed on a lower surface of each of the stages and an upper surface of the base facing the stages. A second support portion supports the first support portion so that the first support portion seesaws with respect to a rotation center axis placed along the second direction. A first support portion driving portion has a second driving comb electrode provided at the first support portion and a second stationary comb electrode fixedly positioned to correspond to the second driving comb electrode to generate a seesaw motion of the first support portion.

The present invention relates to a rear suspension for a vehicle such as a bicycle, a motorcycle or the like, of the type that includes a frame (1), a swinging arm (7) integral with the frame (1) carrying the axle (11) of the hub of a drive wheel and a shock absorber (15) whose ends are secured, respectively, to the frame (1) and to the swinging arm (7), the drive torque being transmitted to the drive wheel by a chain (Z) extending between a drive sprocket secured to the frame (1) and a driven sprocket secured to the axle (11) of the hub of the drive wheel, said chain (Z) between the drive and driven sprockets forming two strands; the stretched, upper one, which transmits the drive torque to the rear drive wheel, and the other, “return” lower one, the swinging arm (7) being secured to said frame (1) by at least two articulation means (12, 13) so that the swinging arm (7) pivots about an “instantaneous centre of rotation” point C that is movable when the hub of the drive wheel is displaced on either side of its reference position P_r corresponding to the position of the axle (11) of the hub of the drive wheel when the vehicle is in a static equilibrium position, characterized in that the instantaneous centre of rotation C is displaced upwards along a parabolic path T, the asymptote A of which is oriented towards the rear free end of the swinging arm (7) carrying the axle (11) of the hub of the drive wheel when said hub of the drive wheel is displaced above its reference position P_r.

A fixing apparatus can prevent an excessive rise in temperature of a paper non-passage area due to diverted flow of magnetic flux from a paper passage area of a heat-producing element to a paper non-passage area thereof has a small configuration, A center core is rotated by a rotation section, bringing cutaway parts to a magnetic path masking position, and the degree of magnetic coupling between the center core and a heat-producing roller is weakened, suppressing an excessive rise in temperature of paper non-passage areas of the heat-producing roller. With this fixing apparatus, switching of the intensity of magnetic coupling between the center core and heat-producing roller can be performed simply by rotating the center core. Also, with this fixing apparatus, it is not necessary for magnetism suppressing elements to be provided as separate members, enabling the configuration to be made simpler and less expensive.

A transportation device (10) comprising crank arms (22) installed rotatably on a drive wheel (21), link levers (23) each having one end pin-connected to the tip of each of the crank arms (22), and swing parts (30) each having the other end pin-connected to each of the link levers (23) and held at a specified distance from a rotating shaft (210) of the drive wheel (21), wherein a speed changing cam roller (223) is installed on the crank arm (22) projectedly at a position apart from the rotating center thereof, and the transmission cam roller (223) is engaged for guiding with a transmission cam groove (44) formed eccentrically with respect to the rotating shaft (210) of the drive wheel (21), whereby the tips of the crank arms (22) are swung with in one rotation frequency of the drive wheel (21), and the angular velocities of the link levers and the swing part (30) connected thereto are increased or decreased periodically relative to the angular velocity of the drive wheel (21).

A foldable and portable mobile communication terminal is formed as a two-folded type in which a lower-side body unit and upper-side unit are coupled openably and closably by a two-shaft hinge mechanism. The two-shaft hinge mechanism includes a first hinge unit that allows the upper-side body unit to rotate with respect to the lower-side body unit up to the open state defining a predetermined talking position, and a second hinge unit that allows the first hinge unit to rotate in a direction different from the aforementioned rotational direction of the first hinge unit. The first and second hinge units are coupled so that the rotational center axes thereof orthogonally intersect each other.

A rotor of a permanent-magnet-type rotating electrical machine of the present invention has a plurality of magnetic poles in point symmetry with respect to a rotation center of a rotor core 2. For each of the magnetic poles, there are arranged a permanent magnet 3 whose product of a coercive force and a magnetizing direction thickness is small and a permanent magnet 4 whose product of a coercive force and a magnetizing direction thickness is large. The permanent magnet 3 whose product of a coercive force and a magnetizing direction thickness is small is irreversibly magnetized by a magnetic field created by a current of an armature coil 21, to change a total linkage flux amount. This realizes a wide-range variable-speed operation of high output, to provide the rotating electrical machine with a wide operating range and high efficiency.