Abstract: A self-contained change speed apparatus for use on a bicycle. It has fixed shaft, a hub body rotatably supported on the fixed shaft, a change speed device controlled to turn the hub body about the fixed shaft at one of a series of speeds, and a power input member adapted to provide driving power, A clutch is moved between an active position and a non-active position and adapted to transmit driving power from the power input member to the change speed device. A control mechanism changes the speed ratio of the change speed device, advances the clutch to the non-active position before changing the speed of the change speed device, and delays the movement of the clutch to the active position, for permitting driving power to be returned to the change speed device after a change of the speed ratio of the change speed device.

Abstract: The present invention relates to a speed-changing transmission hub for a bicycle comprising: a central shaft; a controlling device; a planetary gear system, which comprises a planet gear holder, holding several planet gears; a second ring gear; a first ring gear; and two sun gears. Variations of speed are realized by separately fixing the sun gears of different diameters. There is no switching of input and no reversal of the rotation of the sun gears. The sun gears only need to be controlled by a one-way clutch guided by the controlling device, which is mounted on the central shaft. Thereby the arrangement is simplified and its weight is reduced.

Abstract: The present invention relates to a method for the processing of molecules by determining one or more selection parameters for a plurality of molecules; selecting a compatible grouping of molecules based on the selection parameters to form a set; forming a mixture of molecules of interest from the set; and resolving the mixture to fractionate the molecules of interest. The preferred method utilizes HPLC chromatography column to resolve and purify molecules which have different retention times.

Abstract: A bicycle speed changing apparatus comprises a support means, a cable winding means, a fixation plate, a high gear shifting means, a retaining mechanism, a low gear shifting means, and a transmission mechanism. The support means is fastened with the handlebar of a bicycle. The low gear shifting means has a low turning rod connected with the support means by a first retrieving spring and provided with a first braking portion. The cable winding means is connected with the support means by a torsion spring. The fixation plate is provided with a second braking portion. The high gear shifting means has a high turning rod fastened with the fixation plate by a second retrieving spring. The retaining mechanism has a shaft fastened pivotally with the support means and the fixation plate. The shaft is provided with an engaging means and a first cam, a first ratchet portion and a third braking portion.

Abstract: A multi-speed sprocket assembly of a bicycle includes at least a small sprocket and a large sprocket which enable the chain to engage with different sprockets to attain the chain shifting effect by the guidance of the rear derailleur device. The improvement of the multi-speed sprocket assembly includes three feature teeth being furnished at both the large sprocket and the small sprocket wherein a side recess is formed on each of the feature teeth at the surface of a sprocket facing another sprocket, in addition, at the first and second feature teeth of the small sprocket, there is a circular top end recess extended from the top of the teeth at the surface subjected to forces and penetrated through the circular top end recess of the whole teeth.

Abstract: Techniques for a computer system to automatically detect the type of hard disk drive installed in the system even if the hard disk drive has been replaced or upgraded. A method includes retrieving data from a partition table and calculating the necessary parameters from the values in the partition table. In a specific embodiment, the method includes calculating a HEAD parameter and a SECTORS/TRACK parameter from certain addresses stored in the partition table. The method further includes sending an IDENTIFY DRIVE (ID) command to the hard disk drive. Some types of hard disk drive communicate additional information in response to the ID command. The method includes calculating a CYLINDER parameter, using such additional information, if provided. Otherwise, the CYLINDER parameter is calculated from information in the partition table.

Abstract: A method and apparatus for determining the accuracy limit of a learning machine for predicting path performance degradation imposed by the quality of the path performance data is disclosed. A plurality of learning machines of increasing capacity are trained using training data and tested using test data, and the training error rates and test error rates are calculated. The asymptotic error rates of the learning machines are calculated and compared. When the change in asymptotic error rate falls below a certain rate, the asymptotic error rate estimates the accuracy limit for a learning machine for predicting path performance degradation. The accuracy limit is derived from insufficiencies in the path performance data and is applicable to any learning machine trained on and applied to the path performance data, regardless of the complexity of the learning machine or the size of the training data set.

Abstract: The present invention relates to a bicycle speed change lever apparatus which is mounted near the handlebar of a bicycle. A lever apparatus is used for pushing a ratchet member, allowing the ratchet member to produce a positive or negative rotation, which further drives a cable-pulling member, thus allowing the cable to be tightened or relaxed by the cable-pulling member to accomplish an in or back shift. A position maintaining mechanism is also provided for effectuating the shift change, and the cable is allowed to maintain a certain amount of tension. The speed change lever apparatus eases the shifting operation and makes the in shift or back shift more precisely controlled.

Abstract: A speed indicator for bicycles for indicating the shifting action of the bicycle and a speed sign at each state of shift includes a driving wheel driven by a takeup reel of a shifting device, a resilient strip driven by the driving wheel, and a track along which the resilient strip may displace. When the resilient strip displaces along the track, a shift sign pre-formed on the resilient strip may be shown through an indicating element provided on the track. The resilient strip may be adapted for use in vertically or horizontally oriented tracks of any construction, and their assembly is easy. The driving wheel further includes a compensation mechanism for ensuring clear indication of the indicated sign on the resilient strip.

Abstract: This invention relates to a rotary shifter of a bicycle including: a fixing seat mounted on the handlebar of the bicycle; a rotary lever mounted on the fixing seat on an identical shaft axis as the handlebar; a drag member for driving a derailleur cable to enable a derailleur to change gears; a limit member for driving the drag member to engage in linear movement within a specific stroke; a rotary member for being driven by the rotary lever; a screw driving member located on the rotary member for driving the drag member to engage in linear movement along the specific stroke; a locating mechanism for locating the rotary member at an angular position corresponding to each gear of the derailleur; and an over shift device for enabling the drag member to produce extra displacement necessary for over shift of the derailleur to change gears.