Torsional vibration isolating motor mounting arrangement and method of making the same

Abstract From the Canadian patent

Abstract of the Disclosure, Motor mounting system is designed so that the torsional mode resonant or natural frequency is less than twice the frequency of the motor power supply divided by the square root of two , . The illustrated mounting arrangements are "soft" with respect to torsional mode vibrations and yet are, "stiff" with respect to axial and tilting mode vibrations. In one arrangement, lugs are formed preferably from a tough and strong sheet or strip material that is thicker and substantially stronger and stiffer (even in the radial vibration mode) than would usually be desirable from a torsional vibration isolation standpoint, but means are provided for promoting flexure in the …