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A Rzeppa-type CV joint. A constant-velocity joint (also called a CV joint and homokinetic joint) is a mechanical coupling which allows the shafts to rotate freely (without an appreciable increase in friction or backlash) and compensates for the angle between the two shafts, within a certain range, to maintain the same velocity.
Instead, it subsumes the functions of constant-velocity joints, drive shaft and reduction gearing into a single system within the wheel. [ 1 ] The system has a central sun gear , linked by two articulated systems of pinion gears to an enclosing ring gear .
Hardy Spicer is a brand of automotive transmission or driveline equipment best known for its mechanical constant velocity universal joint originally manufactured in Britain by Hardy employing patents belonging to US-based Spicer Manufacturing. Hardy and Spicer soon became partners. Later Spicer became Dana Holding Corporation.
The Tracta Gephi was his first design and it was this car that inspired him to design a constant velocity joint. All subsequent Tracta cars, and there were about two hundred manufactured between 1927 and 1932, used it. The first of these was raced at Le Mans in 1927 completing the 24-hour race. The Tracta cars used engines from S.C.A.P. from ...
The Hotchkiss drive uses two universal joints, which has the effect of canceling the speed fluctuations and gives a constant speed even when the shaft is no longer straight [citation needed]. V8-powered models of the 1963 through 1966 AMC Rambler used a double-Cardan constant velocity joint to eliminate driveshaft fluctuations, though six ...
Alfred Hans Rzeppa (January 23, 1885, Gliwice – January 1965) was an American engineer of Silesian descent working at Ford Motor Company who invented a version of constant-velocity joint in 1926. He proposed an improved design in 1936.
The use of two universal joints, properly phased and with parallel alignment of the drive and driven shafts, allows the use of simple cross-type universals. In contrast, a torque tube arrangement uses only a single universal at the end of the transmission tailshaft, typically a constant velocity joint , and the axle housing is held fast by the ...
Single joint gear couplings are also used to connect two nominally coaxial shafts. In this application the device is called a gear-type flexible, or flexible coupling. The single joint allows for minor misalignments such as installation errors and changes in shaft alignment due to operating conditions.