A control device according to an embodiment includes: a winding unit (30, 3001) that unwinds a wire having one end movably held by a user in a direction of the one end and winds the wire by an elastic force in a direction away from the one end, a wire lock unit (30, 3002) that locks unwinding of the wire from the winding unit, and a control unit (100) that controls an operation by the wire lock unit of locking the unwinding according to a relationship between a position of a virtual object disposed in a virtual space and a position, in the virtual space, corresponding to a position of the one end in a real space.

A retractor device includes a housing including a back plate, a faceplate spaced apart from the back plate, and a sidewall extending between the back plate and the faceplate. The retractor device also includes a rotatable reel inside the housing, a spring biasing rotation of the rotatable reel in one direction, a tether wound around the rotatable reel, and an end fitting coupled to an end of the tether. A retainer of the housing is in contact with the end fitting when the end fitting is in the retracted position. The retractor device also includes at least one bearing inside the housing proximate to the retainer, and first and second extension openings in the sidewall of the housing on opposite sides of the retainer. The tether is configured to engage the bearing when the tether is extended through one of the first and second extension openings.

A window covering system comprises a headrail, a bottom rail, a covering material, a control unit, and a first rotating unit, wherein the first rotating unit is configured to be driven to rotate in a first direction when the bottom rail descends to expand the covering material; and a locking device coiled to the first rotating unit, wherein the locking device provides a restriction force to the first rotating unit to restrict the first rotating unit from rotating in the first direction, as well as to restrict the bottom rail from descending; and an actuating device configured to operate with the control unit simultaneously; when the control unit drives the actuating device to push the locking device in order to reduce the restriction force provided by the locking device to the first rotating unit, the bottom rail descends to drive the first rotating unit to rotate in the first direction.

A retractable fitness towel holder includes an elongated flexible band for looping around a user's arm. A frame disposed on the band is held against the user's arm with a loop portion extending away from the user's arm. A retracting mechanism is biased to retract a cord coupled to the towel, and the towel is retractably suspended from the towel channel such that it extends through the loop portion and away from the holder. Pulling the towel through the loop portion and away from the frame, causes the cord to unspool from the retracting mechanism, and releasing the towel causes the retracting mechanism to re-spool the cord, thereby drawing the towel back through the loop portion to rest against the frame, holding the towel in place during exercise.

A system and method for training a student employ a simulation station that displays output to the student and receives input. The computer system has a rules engine operating on it and computer accessible data storage storing (i) learning object data including learning objects configured to provide interaction with the student at the simulation system and (ii) rule data defining a plurality of rules accessed by the rules engine. The rules data includes, for each rule, respective (a) if-portion data defining a condition of data and (b) then-portion data defining an action to be performed at the simulation station. The rules engine causes the computer system to perform the action when the condition of data is present in the data storage. For at least some of the rules, the action comprises output of one of the learning objects so as to interact with the student. The system may be networked with middleware and adapters that map data received over the network to rules engine memory.

A flat cable reel device includes a housing, a rotary sleeve, an upper spiral spring and a lower spiral spring. The housing is provided with a board outlet. The reel device includes the upper spiral spring, the lower spiral spring, an upper central shaft and a lower central shaft, which form a symmetrical and balanced double-spring structure; when a flexible printed circuit board is reeled or unreeled, the force and the reaction force generated by the springs are evenly distributed over the upper portion and the lower portion of the rotary sleeve, such that the rotary sleeve can balance.

An unequal-torque coil spring and a spring motor thereof which is adapted for a curtain set that can automatically fold back a curtain; the same provides a feedback torque that responds to different stages of a curtain-folding working process and generates various corresponding torque in response, as each of the different stages requires a different force. Consequently, the curtain can be folded back at a steady speed, and positionally fixed at any height when the curtain is lowered.

The air hose retention device includes a first connector pivotally engaged to a top and an outer spool having a receiving area. A second side of a housing is rotatably engaged to a first side. A cable is wound on the outer spool. A spring is disposed in the receiving area. Pulling of the cable causes rotation of the second side in a first direction and the coiling of the spring. Movement of the cable towards the housing uncoils the spring winding the cable about the outer spool and rotating the second side in a second direction. The cable has a releasable connector which is engaged to a connector hose of a trailer. The air hose retention device may be easily disconnected from both a cab and a connector hose for storage or transportation in a cab of a truck during periods of nonuse.

A tool, such as a tape measure, including a spring-based retraction system is shown. The retraction system utilizes an epicyclic gear train coupled between the tape blade winding reel and a rotating arbor or axle within the tape measure. A spiral spring has an outer end coupled to the reel and an inner end coupled to the axle. The gear train may be a reduction gear train such that the axle rotates slower than the reel. By coupling the spiral spring between the gear train input and gear train output, high energy density springs may be used, which may allow for decrease in housing size, increase in tape length or thickness for a given housing size, and/or advantageous retraction speed control.

A double drawcord winding device has a belt pulley supported by a belt pulley bearing to mount on a webbing wheel shaft, two one-way bearings disposed on two sides of the belt pulley bearing, a second shaft sleeve securely mounted on the belt pulley and mounted around the one-way bearings, two winding devices disposed on two sides of the belt pulley and each having a first shaft sleeve extended toward the belt pulley, inserted into and mounted in one of the one-way bearings, each winding device having a winding bearing, a pull cord and a coil spring with two ends, two locating sleeves mounted on the webbing wheel shaft and mounted in the winding devices, one of the two ends of the coil spring connected to the locating sleeve, and other end connected to the winding device.