Abstract: A flexible shaft coupling has first and second hubs, each of which is provided with flanges and connected to a transmission shaft. The flange of the first hub has spring holes extended therethrough. A cover is fixed to the second hub so that the flange of the first hub is held between the cover and the flange of the second hub, and the cylindrical part of the first hub extends through the cover. A plurality of coil spring sets each comprises multiple barrel-shaped coil springs. Each of the coil springs is supported in the spring hole so that the adjoining end faces thereof are in contact and in series with each other.

Abstract: A flexible shaft coupling has first and second hubs, each of which is provided with flanges and connected to a transmission shaft. The flange of the first hub has spring holes extended therethrough. A cover fixed to the second hub so that the flange of the first hub is held between the cover and the flange of the second hub, and the cylindrical part of the first hub extends through the cover. A plurality of coil spring sets each comprises multiple barrel-shaped coil springs. Each of the coil springs is supported in the spring hole so that the adjoining end faces thereof are in contact and in series with each other.

Abstract: A flexible shaft coupling has first and second hubs provided with outwardly extending flanges formed at ends of cylindrical parts of the hubs. Each may be connected to a transmission shaft. The flange of the first hub has a plurality of spring holes therein located within the periphery thereof. A holder is fitted over the cylindrical part of the first hub and fixed to the flange of the second hub so as to hold the flange of the first hub between the holder and the flange of the second hub. Barrel-shaped coil springs pass through the spring holes in the flange of the first hub. Each barrel-shaped coil spring is compressed between the second hub and the holder so that the coil springs deflect to bring adjoining coils thereof into contact with each other when torque is transmitted.

Abstract: A shaft coupling is composed of first and second hubs, each of which has a flange provided with a plurality of spring holes over its circumference at one end of a cylindrical portion of the hub, to which transmission shafts are connected, and a plurality of coil springs are fitted in the spring holes in the flange. The first and second hubs are placed so that their flanges face each other with axial clearance left betweem them. The coil springs are set over the two flanges and tightly fitted in the individual spring holes in a compressed state.

Abstract: A shaft coupling is provided which has two hubs which are fixed, respectively, on the drive shaft and the driven shaft thereof, and which are connected with each other in the rotational direction by means of elastic elements such as coil springs, so that mutual misalignment between the drive shaft and the driven shaft is accommodated by free displacement of spring assemblies in spaces which are provided for receiving the spring assemblies, respectively in a disk-shaped member on the drive shaft and in the flanges of a spring assembly holder fixed on the hub on the driven shaft, whereby any shock produced by a change of load can be absorbed by the elastic elements and rotation of the drive shaft can be transmitted smoothly to the driven shaft.

Abstract: A flexible coupling has a pair of hub members each having a flange and being connected, respectively, with a drive shaft and a driven shaft, and a main set mounted for free removal between the flanges of the respective hub members facing each other, said main set having a pair of disks and a plurality of connecting members, each connecting member being composed of connecting elements in the form of layers each made of resilient thin sheet material, the disks each having a plurality of pins fixed perpendicularly on the surface of the disk in an arrangement in which each two adjacent pins have an equal distance between them along the circumferential direction of the disks, the disks facing each other with the pins on each disk projecting toward the opposite disk so that the pins of the respective disks facing each other are arranged alternately side by side with an equal distance between any two adjacent pins, the connecting members being connected between adjacent pins to form polygonal links between the disks

Abstract: A flexible coupling, for transmitting a great amount of torque from a drive shaft to a driven shaft by directing tensile force to act on connecting members, includes a pair of hub members mounted respectively on the drive shaft and the driven shaft, each hub member having two flanges with a space therebetween in the axial direction of the hub member. Each flange has projections projecting in the radial direction of the flange, each projection peripherally adjoining void spaces. The hub members as a pair are so constructed as to enable the projections of the flanges of one hub member to fit into the void spaces of the flanges of the other hub member, leaving a clearance between any facing portions of the flanges of the facing hub members with no contact therebetween. Retaining members are provided, each such member extending parallel to the axis of the hub member and having both ends thereof supported by the projections of the two facing flanges of each of the facing hub members.