Abstract: A brake device and a winch having the same are provided. The brake device includes a brake sleeve, a torsion spring, a sealing member and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an expanded position and a retracted position, so as to lock and release the brake sleeve. The sealing member is arranged between the brake sleeve and the braking assembly, so that a sealing cavity is defined between the brake sleeve and the braking assembly.

Abstract: A window shade system may comprise a drive hub having a dampener comprised of dampening material, wherein the drive hub engages with at least one of a shade tube or a brake hub. The dampener may include one or more tabs that engage the brake hub. The dampener may be configured to dampen the torque from a spinning of the shade tube. The dampener may be comprised of urethane. The dampener may be incorporated onto an outside surface of the drive hub. The dampener may be located within the drive hub. The drive hub may be in the form of a cap that fits over the dampener. The drive hub may include rounded corners. The dampener may be configured in the form of one or more cylindrical rods.

Abstract: An improved roller shade system provides increased support, additional adjustments and/or increased safety. The slip plate allows the brake to slip forward and minimize damage to the clutch spring when a user pulls too hard on the hembar. The center drive mechanism extends through a bracket to allow the drive shaft to distribute power in both directions and drive two shade tube simultaneously. The tube adapter absorbs force from the spinning shade tube to minimize damage to the other components and the bead chain. The sprocket has a back wall supporting the sprocket, allowing the sprocket 130 to rest on the back flange of the sun gear to minimize pressure on the gears. An adjustment arm is adjusted to help level the shade band. The shade bands may be removed without disturbing the other shade bands in the system. A height of a hembar may be adjusted by rotating a rod within the hembar.

Abstract: An electromechanical actuator includes a spring brake with a helical spring, a drum, an input member, an output member and a cap. The drum includes a housing with an inner friction surface configured to cooperate with at least one turn of the spring. The input member includes a driving tooth extending between the input member and the cap. The input member or the cap includes a spacer extending between the input member and the cap. The input member includes a first radial retention element of the spring extending between the tooth and the spacer, along a first side of the brake. Furthermore, the cap includes a second radial retention element of the spring extending between the tooth and the spacer, along a second side of the brake.

Abstract: The current document is directed to a two-way, by-passable, overrunning clutch incorporated within a mechanical prosthetic knee that provides functionality similar to a biological knee or incorporated in another articulated device, such as a robotic or orthotic articulated device or member. The currently disclosed two-way, by-passable, overrunning clutch allows for two-way free rotation when disabled, but, when enabled, prevents rotation in one direction while allowing free rotation in the other direction. In the mechanical prosthetic knee, the two-way, by-passable, overrunning clutch is enabled by application of a mechanical force and disabled by removal of the mechanical force.

Abstract: A torque limiter and no-back assembly comprises an input shaft, an output shaft, a torque limiter provided between the input shaft and the output shaft, the torque limiter comprising a torque sensing element; and a no-back device arranged to brake the output shaft when the torque sensing element senses levels of torque above a threshold level between the input shaft and the output shaft, characterised in that the torque sensing element comprises a torsion spring having ends which are coupled to the input shaft and the output shaft for rotation therewith.

Abstract: An actuator comprises an input shaft, a sliding collar arranged around the input shaft, and an output shaft. The input shaft, output shaft and sliding collar are arranged such that a torque applied to the input shaft can be transmitted via the sliding collar to the output shaft. The actuator comprises a torque-limiting device for limiting the transmission of torque between the input shaft and the output shaft if the torque exceeds a certain threshold. The torque-limiting device comprises one or more rolling elements arranged between the sliding collar and the input shaft to allow the sliding collar to move axially relative to the input shaft and engage with or disengage from the output shaft.

Abstract: A cord wrapping mechanism converts linear motion to circular motion for use in coverings for architectural openings. The cord is guided onto a spool.

Abstract: A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.

Abstract: A window regulator apparatus may include a first operation part including a first housing with which a bar-shaped central shaft may be through-connected, and a first elastic member which may be connected inside of the first housing, a second operation part disposed inwardly of the first operation part and including a second housing with which the central shaft may be through-connected, and a second elastic member connected inside of the second housing to be slidably formed in a longitudinal direction of the central shaft from above the central shaft, and a connection part selectively connecting or disconnecting the first operation part and the second operation part to or from each other.

Abstract: A mechanism for synchronously varying pitch of a multi-blade rotor, such as rotors used in wind or hydraulic generator and helicopter is provided in the present invention.

Abstract: A roller shade clutch is disclosed. In exemplary embodiments the clutch may comprise a housing, a ribbed post extending axially from the housing, a sprocket wheel mounted for rotation around the post, at least one torsion spring mounted for rotation on the ribbed post, a chain guard, a boss extending axially from the sprocket wheel, and a drum disposed over the ribbed post, the torsion spring and the boss.

Abstract: A slip clutch for a roller blind. The slip clutch comprises a clutch base with a shaft portion, a drive sprocket including a drive tube and rotationally mounted on the clutch base, at least one clutch spring and a roller tube connector. The clutch spring is in the form of a coil spring frictionally engaged about the shaft portion and positioned between the shaft portion and the drive tube. The spring includes end members that engage the drive tube such that rotation of the drive tube about the shaft portion is resisted by the frictional engagement of the spring about the shaft. Rotation of the drive tube in either direction causes the drive tube to apply a force to the clutch spring in a direction such that encourages an increase in the diameter of the spring to reduce the frictional engagement of the clutch spring with the shaft portion.

Abstract: A curtain pull bead fixing apparatus includes a stationary seat, a bottom cover, a bead disk, a button, a spring, a main body, a slider and a front cover. One side of the stationary seat is assembled with the bottom cover, and the other side of the bottom cover is fixedly connected with the main body. The other side of the main body is fixedly connected with the front cover. A through hole is formed in the bottom cover for passage of the button, and the first end of the button is pressed against the stationary seat. The pull bead is in a tensioned state all the time and will not collide with the surface of the wall even under an external force. The children could not play with the pull bead by wrapping the same around their neck, which brings about high safety.

Abstract: An apparatus for raising and lowering a window shade having: a clutch assembly with a clutch core having a shaft; springs having pairs of load bearing members, the springs being circumferentially positioned along a length of the shaft, the pairs of load bearing members being circumferentially spaced around the shaft such that there are no two orthogonal planes along a longitudinal axis of the shaft about which a load applied to a load bearing member of each pair is symmetrically distributed; a pulley defining openings, each of the openings being configured to receive at least one pair of load bearing members; and a housing comprising a plurality of keys, each key being configured to fit between at least one pair of load bearing members received by the openings.

Abstract: A chassis actuator adjusting a movably mounted component of a chassis, which has a first actuator component connected to the movably mounted component and a second actuator component connected to a fixed chassis component. The actuator components are adjustable axially by a ball screw that has a threaded spindle and a nut which runs on spindle. The nut is driveable by a drive motor that has a rotor coupled to the nut and a fixed stator arranged axially symmetrically with respect to the nut. The rotor is coupled to the nut by a wrap spring which radially surrounds the nut and via which the nut is rotated during rotation of the rotor and which forms a brake device. The brake device can be actuated by an external chassis force which acts on and rotates the nut and builds up a friction moment that counteracts the rotation of the nut.

Abstract: The invention relates to a load torque lock (1) comprising a sling element (12) that frictionally interacts with a brake component (13) for blocking a torque, and a drive wheel (14) that is coupled in a torque transferring manner to a carrier (15; 15a) having at least one contact area (25) to the sling element (12) and engaging axially in the drive wheel (14), by means of which a torque to be blocked can be initiated in the sling element (12). According to the invention, the carrier (15; 15a) has means for reducing the bending tension in the at least one contact region (25).

Abstract: Actuator for operating a valve, including: a drive component; a drive shaft, which is connectable with the valve; and a torque lock, which is connectable with the drive shaft The torque lock includes at least one essentially rotationally symmetric spring element arranged in a ring-shaped housing, and is so constructed that a torque introduced via the drive component causes the drive shaft to rotate, and a torque introduced via the valve blocks rotation of the drive shaft.

Abstract: The invention relates to improvements in the object of patent P200603269 for “Automatic rotation system for tilting seats of chairs or armchairs”, comprising rotation supports formed by two parts (1 and 2) which are rotating in relation to one another, between which there is incorporated a rotating draw-spring (4), one of the parts (2) of each rotating support determining an annular channel (5), in which there is housed a ring (6) together with a high-viscosity silicone filler, such that said ring (6) is linked by pulling with the other part (1) of the rotating support, a braking action occurring on the rotation movement between the two parts (1 and 2) due to the friction of that ring (6) with the silicone in the channel (5).

Abstract: A roller shade clutch is disclosed. In exemplary embodiments the clutch may comprise a housing, a ribbed post extending axially from the housing, a sprocket wheel mounted for rotation around the post, at least one torsion spring mounted for rotation on the ribbed post, a chain guard, a boss extending axially from the sprocket wheel, and a drum disposed over the ribbed post, the torsion spring and the boss.

Abstract: An improved roller blind clutch assembly is disclosed for controlling the raising and lowering of a roller blind which permits the smooth raising and lowering of roller blinds even if the blinds are heavy. The improved roller blind clutch assembly includes a roller tube mount coaxially and rotatably mounted to a barrel. A clutch member is in turn coaxially and rotatably mounted to the barrel between the roller tube mount and the barrel. The clutch member has a window formed between a first and a second edge of the clutch member. A torsion locking spring is coaxially mounted to the barrel between the barrel and the clutch member. The torsion locking spring has opposite first and second ends which project into the window. The roller tube mount has an extension portion configured to extend into the window and dimensioned to fit between the first and second ends of the torsion locking spring.

Abstract: A spring loaded brake for an actuator for driving a household screen includes a helical spring having radially extending end lugs, a friction piece including a friction surface against which the spring presses, an input piece which drives the spring in rotation in one direction to reduce a force of contact between the spring and the surface, an output piece which drives the spring in rotation in a direction to increase the force of contact between the spring and the surface and wherein the brake also includes two end stops which always rotate as one about an axis of the spring and each of which forms a stop to limit axial movement of the spring in opposite directions.

Abstract: There is provided a blind operating device for transmitting a rotation in both directions from an operation portion to a driving axis of the blind capable of making a diameter of a clutch spring smaller, and then capable of reducing operation load without breaking the clutch spring. The blind operating device includes an input shaft into which a rotation from a pulley is inputted, and a rotation axis that is provided coaxially with the input axis and is capable of transmitting the rotation to the driving axis. A clutch spring is wound around a fixed spring winding axis of a case and a rotation spring winding axis of the rotation axis. Linking and de-linking of the rotation axis and the case is made possible utilizing tightening and loosening of the clutch spring and one end of the clutch spring is linked to the rotation axis.

Abstract: A drive device with override function for a moving device in motor vehicles includes a drive element, an output element with a rotationally symmetrical surface connected to the moving device, and a connecting device, which under a drive-side load transmits a drive torque to the output element and in the absence of the drive-side load releases the output element. The drive device further includes a carrier wrap spring, which is operatively connected to the drive element and can be brought into engagement with the rotationally symmetrical surface of the output element, together with a control element, which under a drive-side load braces the carrier wrap spring with the rotationally symmetrical surface of the output element and in the absence of the drive-side load releases the bracing of the carrier element with the rotationally symmetrical surface of the output element.

Abstract: The invention relates to a mechanical sprung anti-backoff device, capable of fixedly immobilizing or releasing a manual control handwheel (4) and a motor acting on one and the same rotation shaft, comprising a cylindrical spring (7, 16), a cylinder (9, 17) mounted so as to rotate on the rotation shaft, the spring being able to rotate with the cylinder, turns of the spring being in contact with a surface of the cylinder and its ends being capable of coming into contact with the handwheel. The ends of the spring (7, 16) are curved inward or outward, the handwheel (4) may act on the curve of one or other of the ends of the spring (7, 16), and the rotation of the spring (7, 16) is limited by a stop acting against one or other of the ends of the spring. Application can be to manual control and motorized control valves, for example on fluid pipes.

Abstract: The invention relates to a load torque lock (1) comprising a sling element (12) that frictionally interacts with a brake component (13) for blocking a torque, and a drive wheel (14) that is coupled in a torque transferring manner to a carrier (15; 15a) having at least one contact area (25) to the sling element (12) and engaging axially in the drive wheel (14), by means of which a torque to be blocked can be initiated in the sling element (12). According to the invention, the carrier (15; 15a) has means for reducing the bending tension in the at least one contact region (25).

Abstract: An operating unit (5) for operating a window covering. The operating unit (5) includes a housing (11), a rotatable drive pulley (13) having an axis of rotation and first and second mounting positions in the housing, with respect to the axis of rotation, an engagement device (15), rotatable about the axis of rotation, and a brake mechanism (45, 47, 49) for, in use, arresting the engagement device when the drive pulley (13) is not rotated and preventing the engagement device and drive pulley from being back driven by the window covering. The engagement device (15) has a plurality of circumferentially spaced pins (19) parallel to the axis of rotation. The drive pulley (13) has a corresponding plurality of openings (17) facing the pins (19). In the first mounting position, the pins on the engagement device (15) engage with the corresponding openings (17) in the drive pulley and the engagement device rotates with the drive pulley.

Abstract: A transmission mechanism having a deceleration function includes a guide screw, a worm wheel set, an intermediary ring, an isolator and a passive sleeve. The worm wheel set is fitted onto the guide screw and includes worm wheel and plural claw arms. A spacing slot is formed between any two adjacent claw arms. The intermediary ring is fitted onto a peripheral edge of each claw arm. The isolator surrounds a peripheral edge of the intermediary ring with one side fixed to an actuator. With plural grooves arranged on a peripheral edge thereof, the passive sleeve is fitted onto the guide screw. An accommodation space is formed among the groove, spacing slot and intermediary ring. Each needle roller is accommodated in the accommodation space and inter-contacted with the claw arm, the intermediary ring and the passive sleeve.

Abstract: In a force transmission system with a wrapping spring-type wraparound element and with a frictional surface assigned to the wraparound element, a switching device is provided for switching the wraparound element between two switching states is provided. In the first switching state, the wraparound element is operatively connected in a force-transmitting manner to the frictional surface. In the second switching state, it is operatively connected thereto in a non-force-transmitting manner. In the second switching state, the wraparound element is fully lifted off the frictional surface. The force transmission system is suitable in particular for a drive system of an adjusting element of a motor vehicle.

Abstract: Transmission drive unit (10), in particular for adjusting movable parts in the motor vehicle, having a drive motor (12) and a transmission (14) which is driven thereby, wherein the transmission (14) has an output element (70) and a self-locking device (60) with a locking element (63, 55), and the locking element locks the transmission (12) with respect to torques which are applied to the transmission (12) by the output element (70), wherein the transmission (12) with its transmission toothing (47) and a motor shaft bearing (32, 28) is designed to have optimized efficiency and minimal friction, and the drive motor (12) has, as an exciter magnet, a sleeve-shaped annular magnet (18) which is arranged in a pole pot (16) which forms a magnetic return.

Abstract: Disclosed is an automatic rotation system for tilting seats of chairs or armchairs, comprising a seat fastener having at least one holder formed by first and second parts rotatably coupled together; first and second conformations respectively attached to the first and second rotatably coupled seat fastener parts; and a spring incorporated between the first and second rotatably coupled seat fastener parts.

Abstract: This spring-loaded brake (105) for an actuator for driving a household screen comprises a helical spring (30) each end of which forms a lug (32a, 32b) extending radially, a friction piece (40) comprising a friction surface (41) against which the helical spring (30) presses radially, an input piece (10) able to drive the rotation of the spring (30) about a central axis (X30) in one direction reducing the force of contact between the helical spring (30) and the friction surface, and an output piece (20) able to drive the rotation of the spring (30) about its axis in a direction increasing the force of contact between the helical spring and the friction surface. This brake (105) additionally comprises two pieces (10, 50) which always rotate as one about the axis (X30) of the spring and each of which forms an end stop (16, 57) to an axial movement of the helical spring (30).

Abstract: In a one-way clutch as used preferably in an electric parking brake device, a sector-shape input cam provided bodily with an input rotational member is inserted into a sector-shape cutout of an output cam provided bodily with an output rotational member, with clearances secured in the circumferential direction between circumferentially end surfaces of the input and output cams. A coil spring is placed in an annular space between an internal surface of a stationary cylinder member and external surfaces of the input and output cams and is provided at both ends thereof with curved portions which are placed respectively in the clearances. A cam surface is formed on a part of each circumferentially inner end surface of the cutout.

Abstract: An actuator, preferably a linear actuator, a reversible motor which drives an adjustment element via a transmission. To increase the self-clocking ability of the actuator, the actuator is equipped with a coil spring which has its one end secured to a rotating element in the actuator so that the spring is carried along in the rotation on the cylindrical part, which is static in relation thereto. When the motor is turned off, and the load on the actuator tries to displace the adjustment element, the movement of the coil spring is blocked, and the coil spring is tightened around the cylindrical part.

Abstract: A driving force interrupting mechanism includes input and output members. A coupling sleeve is to be movable on the input and output members along a rotational axis. A fork is swingable around a swing shaft to move the coupling sleeve between a connecting position and a disconnecting position. The coupling sleeve is positioned on both of the input and output members in the connecting position. The coupling sleeve is positioned on either the input member or the output member in the disconnecting position. An operating member is integrally rotatable with the swing shaft. A spring is provided on the swing shaft between the operating member and the fork relatively rotatably with respect to the swing shaft. A motion of one of the operating member and the fork follows a motion of another of the operating member and the fork via an elastic force of the spring.

Abstract: Which has the following essential elements: A drive shaft (1) joined to the rolling drum (23) of a blind (21), joined by means of a first freewheel mechanism (2) with a drive cylinder (4) which has a freeing sector (5). A cogged wheel (17) which has protuberances (18) into which fit the relevant extensions (19) of the slats (20) of the blind (21), joined via a second freewheel mechanism (15) with a blocking sector (26). A brake cylinder (7) with teeth (27) housing a brake spring (9) whose ends form stops (10), with the blocking sector (25) acting on the stops (10) in the direction to increase the apparent diameter of the brake spring (9) and the freeing sector (5) in the direction to reduce its apparent diameter. Various ratchets (28) that can lock against the teeth (27) as a function of the relative position of a transmission crown (6) on which they are articulated with respect to the drive cylinder (4).

Abstract: The invention relates to a mechanism comprising at least one spring (3) for compensating the weight of a closing screen, said spring (3) being fixed, at one of its ends (32), to a ring (6) which is rotatably arranged around a shaft (4) having a circular cross-section. A stop spring (7) which is arranged around the shaft (4) ensures a one-way coupling between the ring (6) and the shaft (4), means (8) being provided for controlling the centripetal effort exerted on said shaft (4) by the stop spring (7).

Abstract: A traction cable actuator has a sun gear, with a lever, at least two planetary gears engaged with the sun gear, and a housing with a toothed race engaging the planetary gears. The housing further has a lock spring seat, and a traction cable sleeve seat. A drive shaft operatively engages with the sun gear to turn the sun gear. The shaft has at least one release tab. A pulley is disposed within the housing. The pulley has planetary gear axles disposed to receive driving force from the planetary gears. The pulley also has a traction cable wire seat. A lock spring disposed to engage said lock spring seat in the housing engages the lever on the sun gear when the sun gear is turned. The lock spring holds said pulley in a position selected by turning the drive shaft. A bearing and groove stop assembly may be included.

Abstract: An actuating drive for transmitting drive torque to a power takeoff, comprising a drive unit; a braking device comprising a cylindrical surface; and a wrap spring having a plurality of turns which are concentric to the cylindrical surface, a pair of ends, a first actuating area on one of the ends, and a second actuating area on one of the ends. When the drive unit exerts a drive torque in a first direction, the first actuating area is nonrotatably connected to the drive unit, the turns undergo a diameter change away from the cylindrical surface, and the second actuating area is nonrotatably connected to the power takeoff for transmitting drive torque. When the drive torque is interrupted, the turns undergo a diameter change toward the cylindrical surface and frictionally engage the cylindrical surface to block transmission of restoring torque from the power takeoff to the drive unit.

Abstract: An anti-reverse transmission for use in a window blind includes a fixed axle, a rotatable input shaft, an output shaft sleeved onto the fixed axle, a transmission shaft sleeved onto the output shaft and coupled to a linking rod of a window blind, the transmission shaft having a protrusion inserted into an opening in the output shaft, and a spiral spring fitted on the fixed axle within the output shaft. The spiral spring has two end tips suspended in the opening such that the spiral spring is radially expanded to disengage the output shaft from the fixed axle for rotation with the transmission shaft and the input shaft upon rotation of the input shaft, and the spiral spring is radially compressed to stop the output shaft from rotation when the transmission shaft receives a biasing force from the gravity weight of a blind body of the window blind.

Abstract: A clutch mechanism for seating units of the type having an adjustable support member. The clutch mechanism includes a housing having first and second opposite ends, and a generally cylindrical inner sidewall. A clamp member is movably interconnected with the housing, and the clamp member is adapted to secure the housing to a frame member of a seating unit. A rotor is rotatably mounted within the housing, and the rotor has a generally cylindrical outer surface. The rotor defines an axis of rotation, and has a channel with opposed sidewalls in the cylindrical outer surface extending generally parallel to the axis. A handle extends from the rotor, and a pulley is rotatably interconnected with the rotor. The pulley has an annular groove and an extension disposed in the channel of the rotor. The pulley is adapted to be operably coupled to an adjustable support member of a seating unit to provide adjustment of the support member.

Abstract: A clutch mechanism for seating units of the type having an adjustable support member. The clutch mechanism includes a housing having first and second opposite ends, and a generally cylindrical inner sidewall. A clamp member is movably interconnected with the housing, and the clamp member is adapted to secure the housing to a frame member of a seating unit. A rotor is rotatably mounted within the housing, and the rotor has a generally cylindrical outer surface. The rotor defines an axis of rotation, and has a channel with opposed sidewalls in the cylindrical outer surface extending generally parallel to the axis. A handle extends from the rotor, and a pulley is rotatably interconnected with the rotor. The pulley has an annular groove and an extension disposed in the channel of the rotor. The pulley is adapted to be operably coupled to an adjustable support member of a seating unit to provide adjustment of the support member.

Abstract: A bi-directional clutch for operating a window dressing such as a roller shade includes a protective guard for securing the window dressing to a stationary structure, a gear box for transmitting rotation to an output member in response to the operation of an elongated operating member such as a cord, and an antirotational member that prevents the undesirable operation of the output member. The output member is coupled to the window dressing. The gear box includes a gear pulley coupled to the elongated operating member, a planetary gear and a stationary gear. The gear box is arranged and constructed to transmit motion to the output member in response to the activation of the elongated operating member, at a predetermined mechanical advantage.

Abstract: A noise reduction structure is provided for use with a meshing gear assembly, such as in a power take-off unit for selectively providing power to one or more rotatably driven accessories. The meshing gear assembly includes meshing input and output gears that are supported within a housing and are rotatably driven during use. A helical coil wrap spring extends about and is frictionally engaged with a portion of the output gear. A first end of the wrap spring extends outwardly therefrom to form a control tang that extends adjacent to an abutment surface provided on the housing of the power take-off unit. As a result, the wrap spring is prevented from rotating relative to the housing as the output gear is rotatably driven.

Abstract: Variable clutching seat recliner apparatus includes a drum coupled to a seat back, a band wrapped about the drum inhibiting rotation thereof, a tightening mechanism coupled to opposed ends of the band such that a force applied to the seat back in either of two opposing directions produces a tension in the band adjacent either end and a corresponding loosening of the band adjacent the other end. The tightening mechanism includes a lever pivotable about a fixed pivot point to convert a portion of the tension to reduce the loosening, and a variable control mechanism positioned proximate the lever for limiting pivotal movement of the lever.

Abstract: A lift control device for a roller shade includes a support rod having one end containing an insert socket, a spring mounted on the support rod, a roller cap rotatably mounted on the support rod and containing a retaining opening to secure the spring therein such that the spring is rotated by the roller cap, and a follower spool secured on the roller cap to rotate therewith.