47results about How to "Friction is generated" patented technology

A robotic control system is placed in clutch mode so that a slave manipulator holding a surgical instrument is temporarily disengaged from control by a master manipulator in order to allow manual positioning of the surgical instrument at a surgical site within a patient. Control systems implemented in a processor compensate for internally generated frictional and inertial resistance experienced during the positioning, thereby making movement more comfortable to the mover, and stabler from a control standpoint. Each control system drives a joint motor in the slave manipulator with a saturated torque command signal which has been generated to compensate for non-linear viscous forces, coulomb friction, cogging effects, and inertia forces subjected to the joint, using estimated joint angular velocities, accelerations and externally applied torques generated by an observer in the control system from sampled displacement measurements received from a sensor associated with the joint.

A vehicle brake shoe assembly (10) having a rigid backing plate (12) incorporating a plurality of extensions (100) which project through the brake friction material matrix (22) to the outer friction surface (24) of the brake shoe assembly (10). Each extension (100) is configured to cooperate with the brake friction material matrix (22) to engage a surface of an opposing friction element (28) simultaneously with the friction material (22), increasing the static and dynamic friction performance of the assembly (10) during initial use beyond that achieved from the application of either the brake friction material (22) or the projections (100) alone.

A card connector includes an insulating housing, a plurality of terminals received in the insulating housing, a preventing member and an ejecting device. The insulating housing has a base portion. Two sidewalls extend upward from both sides of the base portion and a rear wall extends upward from the rear of the base portion. The sidewalls and the rear wall define a chamber therebetween for receiving a card. The preventing member is configured at one side of the insulating housing and has a base bar extending longitudinally. Two ends of the base bar protrude into the chamber to form a pair of propping sections for elastically propping one side of the card. The ejecting device is configured at the other side of the insulating housing opposite to the preventing member for operably withdrawing the card from the card connector.

An image pickup device driving apparatus including an image pickup device holding portion for holding an image pickup device with an image pickup surface directed to a predetermined direction and capable of moving in an optical axis direction; a movable portion provided facing the image pickup device holding portion and capable of moving with respect to the image pickup device holding portion; three inclined portions provided on a surface of any one of the movable portion and the image pickup device holding portion, which faces the other; three spheres provided on a surface of the other of the movable portion and the image pickup device holding portion, which faces the three inclined portions, in a way in which they are respectively brought into contact with the three inclined portions; and a driving portion for moving the movable portion so as to change positions in which the three inclined portions and the three spheres are brought into contact with each other and to move the image pickup device held in the image pickup device holding portion in the optical axis direction with the surface direction of the image pickup surface maintained.

A handle height adjusting mechanism includes: a coupling member disposed on a handle tube of a stroller; an actuating member disposed movably on the handle tube, and coupled to the coupling member for driving movement thereof; an engaging member connected to the coupling member; and a resilient member coupled to the coupling member for biasing the coupling member to a first position, where the engaging member engages the selected positioning hole to arrest movement of the handle tube relative to the frame tube. The actuating member is operable to move the coupling member to a second position against biasing action of the resilient member, such that the engaging member is removed from the selected positioning hole so as to permit movement of the handle tube relative to the frame tube.

A photomask positioning apparatus comprises a positioning device having a base, one end of which comprises a bended fixed portion connected to a bottom of the containing space and the other of which is away from the fixed portion comprises a bended positioning portion such that a photomask can be positioned between the positioning portion set at the two sides of the containing space.

The positioning hinge has a pintle, a leaf assembly and a positioning element. The pintle is mounted in the leaf assembly and is connected with the positioning element. The leaf assembly has a surface, and the positioning element rubs against the positioning element to generate a growing friction. When the pintle and the leaf assembly are mounted to a cover and a body respectively, the growing friction generated by the positioning element and the leaf assembly makes the cover to be positioned at a desired position relative to the body.

An automatically rotating sponge apparatus for facilitating reaching and cleaning in hard to reach places comprising an extendable rod having disposed at one end a rotating attaching member, a motor, and a switch for actuating the motor, wherein attaching member is configured to attach and hold a conventional sponge and the attaching member is connected to the motor such that it rotates about its center axis by the motor when the motor is actuated. In this manner, the rotating sponge apparatus allows a conventional sponge being held by the attaching member to be extended beyond arms reach the length of the extendable rod and automatically rotated to generate cleaning action friction.

A photomask positioning apparatus comprises a positioning device having a base, one end of which comprises a bended fixed portion connected to a bottom of the containing space and the other of which is away from the fixed portion comprises a bended positioning portion such that a photomask can be positioned between the positioning portion set at the two sides of the containing space.

A motor structure with a built-in lens includes a lens mount (10), a motor (30) received in the lens mount, and a lens unit (50) received in the lens mount and driven by the motor to telescopically move along an axial thereof. The motor includes a stator (32) and a rotor (34) being rotatably received in the stator. A narrow gap is defined between an inner surface of the stator and an outer surface of the rotor. A bearing layer (36) is filled in the gap of the motor to avoid swing of the rotor during rotation thereof. The lens unit threadedly engages with the rotor, whereby when the rotor rotates, the lens unit has a linearly telescopic movement relative to the lens mount.

A motor structure with a built-in lens includes a lens mount (10), a motor (30) received in the lens mount, and a lens unit (50) received in the lens mount and driven by the motor to telescopically move along an axial thereof. The motor includes a stator (32) and a rotor (34) being rotatably received in the stator. A narrow gap is defined between an inner surface of the stator and an outer surface of the rotor. A bearing layer (36) is filled in the gap of the motor to avoid swing of the rotor during rotation thereof. The lens unit threadedly engages with the rotor, whereby when the rotor rotates, the lens unit has a linearly telescopic movement relative to the lens mount.

An apparatus (1) for guiding a flexible member (6) comprising a drum (4) mounted for rotation about a drum axis (5) and a pulley (2) mounted for rotation about a pulley axis (3), the drum and pulley axes being inclined. The apparatus defines a path for the flexible member including first and second drum wrap portions (7,9) on axially spaced first and second fixed drum diametric planes, a pulley wrap portion (8) on a fixed pulley diametric plane, and first and second connecting portions (7a, 7b). The arrangement is such that the connecting portions (7a, 7b) lie on the respective first and second drum diametric planes and both lie on the pulley diametric plane. As the drum (4) and pulley (2) rotate with the flexible member (6) in use, the arrangement is such that the first and second drum wrap portions (7,9) remain on the fixed drum diametric planes and the pulley portion of wrap (8) remains on the fixed diametrical plane of the pulley. The apparatus reduces slippage of the flexible member (6) and associated wear.

A camera module includes first to third lens groups; a first mover configured to move the second lens group in the optical-axis direction; a second mover configured to move the third lens group in the optical-axis direction; a base accommodating the first mover and the second mover; a support ball disposed to be in rolling contact with the first mover, the second mover, and the base, the support ball supporting movement of the first mover and the second mover relative to the base; a driving magnet coupled to each of the first mover and the second mover; and a coil part coupled to the base, the coil part being disposed to face the driving magnet, and wherein an entirety of a surface of the driving magnet that faces the moving coil serves as a first pole.

An apparatus (1) for guiding a flexible member (6) comprising a drum (4) mounted for rotation about a drum axis (5) and a pulley (2) mounted for rotation about a pulley axis (3), the drum and pulley axes being inclined. The apparatus defines a path for the flexible member including first and second drum wrap portions (7,9) on axially spaced first and second fixed drum diametric planes, a pulley wrap portion (8) on a fixed pulley diametric plane, and first and second connecting portions (7a, 7b). The arrangement is such that the connecting portions (7a, 7b) lie on the respective first and second drum diametric planes and both lie on the pulley diametric plane. As the drum (4) and pulley (2) rotate with the flexible member (6) in use, the arrangement is such that the first and second drum wrap portions (7,9) remain on the fixed drum diametric planes and the pulley portion of wrap (8) remains on the fixed diametrical plane of the pulley. The apparatus reduces slippage of the flexible member (6) and associated wear.

A lubrication apparatus of a fuel pump driven by a fuel pump drive cam, which lubricates a tappet moving reciprocally at an interior circumference of a fuel pump adaptor and the fuel pump operating the tappet, may include a cylinder head provided with a camshaft, an oil supplying passage formed in the camshaft as a hollow type so as to take oil to the interior of the camshaft, at least an oil branch passage formed to a cam lobe of the fuel pump drive cam so as to be communicated with the oil supplying passage, and a circular groove formed at the interior circumference of the fuel pump adaptor and corresponding to an injection direction of the oil supplied from the at least an oil branch passage.

The size and production costs of an optical microscope apparatus capable of blocking light or maintaining the specimen environment are reduced. The provided optical microscope apparatus includes a microscope that has a stage for mounting a specimen (A), a transmission-illumination optical system, and a detection optical system; and a housing that surrounds the microscope, wherein the housing includes a fixed housing, and a movable housing, wherein, among optical parts constituting the transmission-illumination optical system and the image-forming optical system, at least some optical parts disposed above the stage are movable, and wherein a switching mechanism is provided, the switching mechanism being configured to retract the optical parts away from above the stage when the movable housing is disposed in an open position relative to the fixed housing and to substantially align the optical axes of both optical systems when the movable housing is disposed in a closed position relative to the fixed housing.