Koppers Company, Inc.

John Wright

Steven Banki

Warren N Kouns

An improved hub retention device for retaining the coupling hub in proper position on the shaft of a spindle coupling when the roll ends are removed from the coupling sleeve. The hub retention device is comprised of a split-ring member fitted in a circumferential groove formed on the coupling shaft and a continuous ring member shrunken over the split-ring member.

Hub retention device

In a roll-end spindle coupling, a thrust ring having a spherical surface that coacts with a flex hub is maintained in such coacting relation by an end ring secured to the roll-end coupling sleeve.

Roll-end spindle coupling

A shear sleeve having a shearing zone of reduced cross-sectional area is fixed at the roll end portion of the shaft of a spindle coupling. The sleeve carries means coacting with a roll end sleeve for rotating it and the shaft. Mating surfaces of the shear sleeve and shaft are in contact during normal operation to prevent bending of the shear sleeve. When the shear sleeve shears under excessive torsional stress the surfaces separate and one end of the shear sleeve rotates freely on a bearing, or bearings, mounted on the shaft.

Spindle coupling

Herein disclosed is a torsionally resilient shaft coupling for serially transmitting torque and to provide a substantial amount of torsional flexibility between a pair of axially spaced coaxially aligned shafts. The torsionally resilient shaft coupling comprises a first inner sleeve and a second inner sleeve coaxially aligned with and axially spaced from the first inner sleeve. A first outer sleeve is connected to a first of the shafts and surrounds the first inner sleeve forming a first annular space therebetween. A second outer sleeve is connected to a second of the shafts and surrounds the second inner sleeve forming a second annular space therebetween. At least one first annular torsionally resilient member is interposed in the first annular space and is connected to the first inner sleeve and to the first outer sleeve to provide primary torsional flexibility between the first outer sleeve and the first inner sleeve. At least one second annular torsionally resilient member is interposed in the second annular space and is connected to the first inner sleeve and to the second outer sleeve to provide secondary torsional flexibility between the second outer sleeve and the second inner sleeve. A first rigid annular torque plate is located axially between the first and second inner sleeves and connects the first inner sleeve to the second outer sleeve for transmitting torque from the first shaft to the second outer sleeve. A second rigid annular torque plate is located axially between the second inner sleeve and the second shaft and connects the second inner sleeve to the second shaft for transmitting torque from the second inner sleeve to the second shaft.

Torsionally resilient shaft coupling

Herein disclosed is a flexible gear type coupling for connecting a pair of substantially coaxially aligned shafts to transmit torque therebetween. The flexible coupling comprises a hub having external gear teeth surrounding an outer portion thereof and rotatably connected to one of the shafts. A sleeve surrounds the hub and has internal gear teeth surrounding an inner portion thereof and in meshing engagement with the external gear teeth of the hub. A shear spacer is connected between the sleeve and the other of the shafts for transmitting torque from the one shaft to the other shaft. The shear spacer is adapted to shear when excessive torque is applied thereto for protecting the coupling from being damaged from the excessive torque. A capturing device is interposed between the hub and the sleeve for maintaining the sleeve substantially concentric about the hub upon shearing of the shear spacer.

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Baltimore, MD, United States of America

John Wright