Class 474/103 - Shifter driven by electrical or fluid motor

Subclass of Class 474 - Endless belt power transmission systems or components
Definition: Subject matter wherein force for actuating said device is
No. of patents: 26
Last issue date: 08/14/2007

Number	Title	Issue Date
7255255	Method and system for positioning guide arms in a strip fabrication assembly A method of dispensing a strip product using a strip fabrication assembly, by entering arm positions for guide arms of the assembly into a guide arm controller device, moving the corresponding guide arms of the strip fabrication assembly to the respective arm positi...	08/14/2007
7214153	Method of changing the duty cycle frequency of a PWM solenoid on a CAM phaser to increase compliance in a timing drive A chain drive having a phaser such as a hydraulic vane phaser interposed between a timing chain and a driving or driven shaft is provided. The phaser or the vane are controlled to oscillate more at certain engine speeds to thereby reduce the tensioning force on the ...	05/08/2007
7210361	Device for measuring the tightness of a transmission belt A device for measuring the tightness of a transmission belt comprises a hilt, an insertion tube, a frame, a retaining piece and an engaging piece. The hilt is provided with a transverse handle, a sleeve and a retractable axle having a section of a screw thread. The ...	05/01/2007
7117989	Device for detecting the tension of scraper chains A device for detection and adjustment of the tension of a scraper chain of a chain conveyor, in particular of a face conveyor, having a tensionable return station, on which a spoked chainwheel to reverse the scraper chain, having chain links and scrapers attached th...	10/10/2006
6957735	Pneumatic spinner drive tensioning assembly An pneumatic tensioner apparatus is disclosed, the apparatus including: a main drive belt; a chuck assembly, suspended from the main drive belt, having a spinning member and a drive contact portion; a first frictional drive belt in a first track, the first frictiona...	10/25/2005
6609985	Tensioner with vibrational damping A blade-type chain tensioner (10, 110) is provided including a shoe (30, 130) adapted to impart tension to a chain (16), a blade spring (28, 128) engaging the shoe (30, 130), a piezoelectric strain element (35, 135) coupled to the blade spring (28, 128) o...	08/26/2003
6569046	Belt wear detection system and method A system and method for detecting wear and the beginning of the mechanism of belt failure. A sensor (5) detects when a self tracking drive belt (1) tracks off center due to the asymmetrical wear (3) of the belt (1). The sensor (5) may be a simple mechanic...	05/27/2003
6312562	Traveling screen system A traveling screen system has a traveling screen guided about a multiplicity of support and guide rollers. A scanning device scans a transverse position of the traveling screen and an adjusting device adjusts the angular orientation of at least one of the...	11/06/2001
6132327	System and method for controlling a bicycle front derailleur A system for controlling the front derailleur of a bicycle is described, in which electronic control mechanism are provided for displaying the identifying number of the selected front gear on an electronic display, on the basis of the position of the mova...	10/17/2000
6039663	Belt steering apparatus for controlling inclined movement of an endless rotating belt A belt steering apparatus for controlling inclined movement of the belt in, for example, a printer. The belt steering apparatus includes a first frame supporting a cylindrical roller having a predetermined portion which contacts an endless rotating belt, ...	03/21/2000
6015159	Method and apparatus for shifting a bicycle transmission A bicycle shift control device includes a pedaling force determining unit for determining a pedaling force exerted on a pedaling member and a shift stage determining unit which determines an optimum shift stage of a bicycle transmission from the pedaling ...	01/18/2000
5997423	Apparatus for controlling chain tension A chain tension control apparatus for preventing a chain chattering in a power transmission system including main and subordinate sprockets and a chain connecting the main and subordinates sprockets. The apparatus maintains a chain tension by sensing a ch...	12/07/1999
5922035	Fuzzy logic control system for electrical aided vehicle A fuzzy logic control method for controlling an electrical motor aided, manually powered vehicle is disclosed which is used to assist a rider of the vehicle. The vehicle comprises a gear transmission for driving the vehicle, a manually powered operator fo...	07/13/1999
5662538	Device for adjusting pitch diameter of sheave of variable speed mechanism A device for adjusting the sheave pitch diameter of a variable speed mechanism includes an output shaft, a linking member, an upper urging rod, a lower urging rod, and a motor. The device can be operated easily and safely such that the speed changing info...	09/02/1997
5628701	Hydraulic tensioner with sealing element A hydraulic tensioner with a sealing element to provide fluid leakage from a fluid filled chamber. The tensioner includes a housing having a fluid filled chamber and a hollow piston slidably received within the chamber and biased in a protruding direction...	05/13/1997
5538477	Electronic transmission control system for a bicycle or the like An electro-mechanical system for shifting gears on a multi-gear bicycle or other human-powered vehicle includes a closed loop derailleur position control system using circuitry for measuring derailleur position. Shifting gears is accomplished automaticall...	07/23/1996
5480356	Speed change device for bicycles A powered control device for speed change in a bicycle comprises an electric motor directly mounted onto the rear derailleur and is provided with an encoder for detecting the position of the rear derailleur....	01/02/1996
5356348	Electronic transmission control system for a bicycle or the like An electro-mechanical system for shifting gears on a multi-gear bicycle or other human-powered vehicle includes a closed loop derailleur position control system using circuitry for measuring derailleur position. Shifting gears is accomplished automaticall...	10/18/1994
5254044	Control system for adjusting bicycle gear ratios A bicycle has front and rear wheels, a sprocket coupled to a pedal crank, a sprocket gear, gears on the rear wheel and a gear chain extending around the sprocket gear and an individual one of the rear wheel gears. The chain is adjustably coupled to the in...	10/19/1993
5213548	Gear shifting system for derailleur equipped bicycle A gear shifting system for use on a derailleur equipped bicycle having automatic and manual modes of operation. A microcontroller is mounted to the bicycle frame. Sensors are also mounted to the frame to allow the microcontroller to determine the most eff...	05/25/1993
5182987	Round baler with tracking control for traction means used to move crop for baling The bale-forming belt for wrapping crop upon itself to form a cylindrical bale within a baling chamber of a round baler is automatically maintained in a straight tracking condition, despite an uneven supply of crop entering across the width of the baler, ...	02/02/1993
5059158	Electronic transmission control system for a bicycle An electro-mechanical system for shifting gears on a multi-gear bicycle or other human-powered vehicle includes a closed loop derailleur position control system using a circuitry for measuring derailleur position. Shifting gears is accomplished automatica...	10/22/1991
4959040	Method and apparatus for precisely positioning and stabilizing a continuous belt or web or the like A device for providing extremely accurate tracking and control of a continuous belt or web driven by at least one roller such as a paper transport belt for an electrostatic plotter, printer or the like includes a method for cancelling out the effect of be...	09/25/1990
4708696	Tensioner for toothed drive belts A tensioner for toothed belts comprises a hydraulic fluid filled cylinder having a piston with a rod projecting out of the cylinder and engaging a pivoted arm with a roller at one end for engaging the belt. A spring within the cylinder urges the rod in th...	11/24/1987
4557372	Belt system with alignment apparatus A belt system of the type having a transparent belt entrained about a pair of support rollers which includes an improved alignment apparatus having a plurality of opaque flags positioned along an edge of the belt and shaped to taper in a transverse dimens...	12/10/1985
4061222	Web tracking apparatus Apparatus for automatically tracking an endless belt or web of material in a stable, predetermined path of movement despite changes in the belt configuration due to differential belt stretching or the introduction into the machine of a new belt having a s...	12/06/1977

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Class 474/103 - Shifter driven by electrical or fluid motor