1
Yokel Edward C: Flexible torsional coupling. Twin Disc Incorporated, April 17, 1973: US3727431 (27 worldwide citation)

A coupling for transmitting power in a transmission or the like, and having an inner and outer member concentrically located together and furthermore having a flexible material such as rubber bonded between and connecting the inner and outer members. The flexible material forms a torsional connectin ...


2
Yokel Edward C: Power transmission with helical tooth tapered gears on input and output shafts. Twin Disc Incorporated, Nilles James E, April 16, 1974: US3803934 (13 worldwide citation)

A power transmission for transmitting power from an input shaft and to an output shaft which is inclined at an angle to the input shaft, said transmission having means including a second shaft for driving the inclined output shaft in the reverse direction with equal power to that in which it is driv ...