Patent ID: 6179716
Filing Date: 2001-01-30
Classification: F16D

Abstract:
A shaft coupling for coupling two rotating shafts together, said coupling comprising:two cylindrical boss flanges, each said flange being secured to the end of a separate one of the shafts and each said flange is formed with a face surface wherein the face surfaces of said flanges affront each other;two pairs of protrusions, each pair of protrusions extending forward from the face surface of a separate one said flanges towards the face surface of the other said flange, each protrusion having parallel side surfaces and the protrusions forming each pair of protrusions are diametrically opposed to each other and are collectively shaped to have the same length and a common width that defines the distance between the side surfaces of said protrusions;an intermediate disk disposed between said flanges, said intermediate disk being formed to have opposed face surfaces, each face surface of said intermediate disk being located adjacent the face surface of a separate one of said flanges, and four cylindrical cavities disposed around a peripheral section of said disk, wherein: a first pair of the cavities are diametrically opposed to each other relative to a center of said disk; a second pair of the cavities are diametrically opposed to each other relative to the center or said disk; the pairs of cavities are orthogonally oriented relative to each other; and said protrusions from one said flange are disposed in the first pair of cavities and said protrusions from the other said flange are disposed in the second pair of cavities;a pair of spaced-apart liners are fitted in each cavity, each said liner having an arcuate surface and a planar surface opposite the arcuate surface, wherein the liners are located in the cavity so that the side surfaces of said protrusion disposed in the cavity are located between the planar surfaces of said liners; andspacers formed of synthetic resin mounted to the face surfaces of said flanges wherein, said spacers are positioned so that the face surfaces of the intermediate disk abut said spacers and do not abut the adjacent face surfaces of said flanges.