Kroken Torque

Big Blue Book of Bicycle Repair — 4th Edition
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In one embodiment, coupler may be a one-inch length section of rubber tubing. A benefit of using rubber tubing is that pulling on the tubing applying longitudinal tensile force to the rubber tubing causes the tubing to elongate and tighten about spin sensor shaft and tether In another embodiment, coupler may include a Chinese finger trap. Due to the particular crisscross stitching of a Chinese finger trap tubular shape, more axial force causes the Chinese finger trap to grip tighter, allowing for higher torque and load pull capabilities than other sleeves.

In such an embodiment, a Chinese finger trap coupler may grip tighter as spin sensor shaft and tether pull in opposite directions from within the crisscross stitching of the Chinese finger trap.

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Alternatively, coupler may be a swivel that permits tether to rotate about its own axis. In a further embodiment, coupler may include a section of heat shrinkable insulation sleeving. First, a knot may be tied in tether to define free end of tether Free end then may be inserted through a hole formed in clapper Hole may be tapered and have rounded edges. Second coupler end may be pushed about free end so that free end of tether is positioned within coupler First coupler end may then be pushed around shaft A clamp may then be secured about coupler and free end In operation, coupler may allow tether to breakaway from sensor head assembly should someone sit on play ball , for example.

However, it is important that coupler securely hold tether to spin sensor shaft against any anticipated game play compression and torque forces imparted into play ball It is important, therefore, that the radially inward compression forces between first coupler end and spin sensor shaft and second coupler end and tether be not less than 5 lbs.

For safety, it may be preferable that a breakaway of tether may not bring down with it any hard parts, caps, pins, or ceiling. Here, coupler may be attached between clapper and a free end of tether It is important in this embodiment, therefore, that radially inward compression forces between coupler and tether be not less than 25 lbs.

In another embodiment, tether may be attached directly to shaft and coupler may be eliminated to allow the more aggressive players freedom to hit play ball with a desired force. In general, coupler may be an optional feature to this embodiment and may be an attractive option for households with younger children who are more likely to sit on play ball As play ball spins, tether and coupler may twist and cause spin sensor shaft FIG. As spin sensor shaft turns, this rotating mechanical force may be converted to an electrical force by components of spin sensor Faster spinning of play ball may generate a proportionally higher level of DC voltage.

Significant sensor voltage levels for the DC motor may be no less than 20 milliVolts mV. A voltage conditioning circuit may be used to amplify or offset the spin sensor signal voltage and to adjust for signal polarities before delivery to microprocessor FIG. These significant sensor voltage levels may have durations of no less than milliseconds mS. magnetic suspension

These minimum voltage level and duration requirements may work to reduce false triggering signals within microprocessor To avoid interfering with movement of play ball , the DC motor of spin sensor may have very low drag characteristics. For example, the rotational friction resistance of spin sensor shaft may be such that no more than two twists of tether may be needed to move shaft in the same direction as tether Here, a detection range may be resolved to not less than three, starting with a minimum of two revolutions per second rps. In experimentation, a four-foot length of 0.

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The same direct current DC voltage generator utilized to determine the spin of play also may be used as a motor to impart spin into play ball This particularly may be applicable to an idle standby condition where play ball is idle to entice a player back to a game by spinning play ball Imparting spin into play ball additionally may serve to capture the attention of player to begin, continue or finish a game in progress as well as serve to stimulate and interact with player by spinning in game driven periods.

For example, spin sensor may spin play ball clockwise at two revolutions per second whereas the game being played may require player to spin play ball counterclockwise as a way to prevent spin sensor from detecting any spin movement in either direction. This imparted spin may be accompanied by a sound effect, such a signature sound for a particular game or a marketing promotional announcement. The tethered ball game of claim 9 , where the spin sensor determines a valid rotational value of the play ball when the motor generates no less than 20 millivolts for duration sets of more than milliseconds to reduce false triggering signals.

A game control may be configured to be connected through a network to download new and customized game configurations and to upload player game statistics. The game control may include a wireless gaming network interface. In addition, a gaming experience may be configured to be customized by a game user by the game user selecting personal options available in a modular nature of a game topology.

In another embodiment, spin sensor may include a simple bearing assembly having an optical strobe disk to serve as a spin detector. The optical strobe disk may be mounted to a top of the integral shaft bearing.

Integral shaft bearings may be used where the load on the bearing elements is not significant but economy in space and cost are the critical factors. The two devices may be mounted apart from each other on the same side of the bearing assembly radius so the magnet passes by and triggers each device independently as it spins with the bearing assembly.

The sequence of signals generated may be interpreted by the rotation related pattern and may be quickly resolved by microprocessor to determine clockwise or counter clockwise rotation of play ball In this embodiment, signal amplification may not be required. In this embodiment, spin sensor may include an infrared sensor and reflective stripes disposed about clapper to form an optical strobe disk. Alternatively, reflective stripes may be patterned onto coupler as an optical strobe disk.

In either case, coupler may include a free spinning quick disconnect element. In operation, infrared sensor may send out pulsed light patterns that are reflected back by reflective stripes to infrared sensor The voltage signal may be transmitted to microprocessor FIG. As noted above, sensor head assembly of FIG. Each direction detector may be positioned in a circular array arranged about interior Direction detectors may include eight direction detectors: direction detector , , , , , , , and When play ball is moved in a given direction, play ball may pull along tether Since clapper may be connected to tether , clapper generally may move in the same radial direction as play ball That is to say, with clapper hanging from a position centered within direction detectors and moving in pendulum fashion, clapper may follow the swinging of play ball If sufficient force is applied to play ball , clapper may make contact with one or more direction detectors When membrane based direction detector is struck by clapper , a unique analog voltage may be generated by that direction detector that corresponds with the radial movement of play ball This analog voltage may be provided to a conditioning circuit and then to microprocessor Microprocessor may then interpret the signal according to requirements of a currently selected game to determine the relative direction of play ball While most game playing may utilize game target device to contribute to scores, the direction play ball is moving may be another important element of consideration during game play.

Any adjacent pair of direction detectors may work together to provide an indication of a unique direction. Where eight direction detectors are distributed substantially evenly about degree to surround clapper , the degrees is actually divided by sixteen slices of Effectively, a radial movement of play ball may be determined within each Travel path sensor may operate by tracking movement of a secondary member. In this case, a primary member may be clapper and the secondary member may be the play ball As clapper strikes travel path sensors , elastic properties of tether may cause clapper to repeatedly strike travel path sensors over a short period of time.

The harder you pluck a guitar string, the more it vibrates. Accordingly, the dynamic impacts of clapper against travel path sensors may be used to determine a force with which play ball was struck. A weight of clapper or material of clapper may be adjusted to minimize or eliminate noise from an impact by clapper against ravel path sensors Depending on the game, multiples of the Such combinations may provide larger divisions, such as 45 degrees, 90 degrees or more.

In another embodiment, when a piezo based direction detector is struck by clapper , a unique digital signal is the result provided to microprocessor , generated by the direction detector that corresponds with the radial movement of play ball In general, the piezo based direction detector signal level is not significant, once converted to a digital signal, while the analog membrane embodiment provides all direction detector signals together as a single analog voltage whereby the voltage level is an indication of the direction detected.

The cone shape of cone is intentional. Since clapper may be suspended from a center point inside a downward facing cone shape of cone , the size of clapper and the distance clapper is from the attached point may affect the degree of movement required of clapper to make contact with cone By positioning clapper closer towards narrow opening FIG. This small movement allows clapper to make contact with one or more of direction detectors and thus allowing the required number of direction detectors to be reduced. Moreover, by increasing a diameter of clapper , a distance between clapper and direction detectors is reduced to make travel path sensor more sensitive within a range of allowed movements of play ball During game play, player may be instructed by audio speech files and lights distributed about target device to hit play ball towards one or more directions.

The success of player in hitting play ball in the indicated direction may be confirmed by travel path sensor As noted above, sensor head assembly may include a play ball strike sensor to detect a physical strike to play ball As seen in FIG. Microphone may be any device adapted to convert acoustic sound waves into an electrical representation of the sound wave. In one embodiment, with a piezo element used in force sensor FIG.

In this same embodiment, microprocessor FIG. An example of a concurrent event requiring exclusion of detection include the situation where an unpredictable play ball strike occurs as spin motor is initiating spin activity.

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In operation, play ball strike sensor FIG. The contact from player striking play ball may emit an acoustic sound wave. Microphone may receive this acoustic sound wave and convert the acoustic sound to a voltage wave representative of the acoustic sound wave. This voltage wave may then be processed by hardware circuit , which may provide a dedicated function filtered for Hz, 12 dB 6-pole bandpass.

Letters to the Editor

Preferably, whenever a bandpass filtered audio level raises dB above the average ambient room level and a single detected event lasting for a duration of less than mS occurs, then a strike to play ball shall be confirmed. Play ball strike sensor may include microphone and a hardware circuit, where the hardware circuit is configured to confirm a strike to play ball on receiving a Hz audio frequency input lasting less than mS and at-least 5 dB above an ambient room level.

The voltage wave corresponding to the confirmed strike then may be rectified by hardware circuit to a DC component representation. This DC component representation may then be fed to microprocessor through a signal multiplexer for further processing. An alternate embodiment may utilize a simple voltage divider circuit to shift the static DC level to one-half of the of system voltage source to allow a differential measurement to be performed by microprocessor Included with target device may be a frame , a cabinet , and targets Frame may couple targets to cabinet Cabinet may house game electronics such as controls system FIG.

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In addition, cabinet may include hardware features that permit securing game assembly to mounting platform In one embodiment, frame may have a plurality of frame arms extending radially outward, with one target attached to each frame arm Alternatively, frame may be dome shaped with no long legs or protrusions extending from the main body where targets may be equally positioned around the surface of the dome.

In another embodiment, frame may have a plurality of frame arms extending radially outward, with at least two targets attached to at least one frame arm Returning to FIG. Frame also may include decorative features In one embodiment, frame may be made of a high strength plastic. Targets may include target , , , , , , , and Each target may serve as a point of aim for play ball Targets need not be rigidly fixed to frame In one embodiment, a cord of each target may be attached to its own retractable device so that the target may be pull, moved, and position in different locations within the reaches of play ball For example, target may be removably attached to frame through a retractable cord This may allow extended positions about the ceiling or even the walls of the room to be utilized for target mounting.

Another embodiment may provide wireless targets not attached to frame to allow even more flexibility without restricting the length of tether and related dressing of attached cording. More often than not, an object of a game played using game assembly may be to hit an indicated target using play ball or at least come close to an indicated target Accordingly, each target may include a target strike sensor FIG. To determine if and when a target is contacted by play ball , several different types of target strike sensors may be implemented. For example, a target strike sensor of targets may include a membrane switch, a micro switch, a piezoelectric element, a commercially available proximity detector and a light emitter with reflection detector.

Target strike sensors may be direct contact sensors, requiring play ball to make actual contact with a target strike sensor to register a contact, or may be indirect, proximity sensors. Depending somewhat on the game playing environment, experiments have shown that some types of sensors may provide advantages over others.

For example, a sensor utilizing a light emitter and a light detector is one of the most robust sensors for game assembly because there are no physical contacts to wear out. One problem the inventors of game assembly overcame as part of this approach was environmental lighting, which may saturate a light detector with environmental light to prevent the light detector from receiving light signals from the light emitter.