Elastic power transmitting element

Claim 2

An elastic Power-transmitting coupling, comprising a disc having a spiral slot formed therethrough from one face to the opposite face thereof and extending around the disc starting from a point adjacent its center and terminating at a point adjacent its outer periphery, a plate of the same shape as said disc overlying one face thereof and fixed to its outer periphery, and means for fixing the center of the opposite face of the disc to a shaft, said disc and plate constituting one element of a clutch connectable to a second shaft to effect the transmission of rotary movement between the two shafts, the shocks occurring upon the transmission of said rotary movement causing the spiral slot to change in width whereby said shocks are cushioned.

Claim 3

A coupling as defined in claim 1, further comprising a second disc fixed to the second shaft, at least one of said discs carrying friction material for effecting a friction coupling therebetween.

Claim 4

An elastic power-transmitting coupling, comprising a disc having a slot formed therethrough from one face to the opposite face thereof, said slot extending in the form of a spiral continuously and uniformly increasing in size around said disc starting from a point adjacent its center and terminating at a point adjacent its outer periphery, and means for fixing said disc at its center to a shaft, said disc being connectable to a second shaft to effect the transmission of rotary movement between the two shafts, the shocks occurring upon the transmission of said rotary movement causing said spiral slot to increase or decrease in width, depending upon the direction of the shock, whereby the shocks are cushioned, said coupling further comprising a second disc fixed to the second shaft, said two discs being fixed together at their outer peripheries.

Claim 5

An elastic power-transmitting coupling, comprising a disc having a slot formed therethrough from one face to the opposite face thereof, said slot extending in the form of a spiral continuously and uniformly increasing in size around said disc starting from a point adjacent its center and terminating at a point adjacent its outer periphery, and means for fixing said disc at its center to a shaft, said disc being connectable to a second shaft to effect the transmission of rotary movement between the two shafts, the shocks occurring upon the transmission of said rotary movement causing said spiral slot to increase or decrease in width, depending upon the direction of the shock, whereby the shocks are cushioned, said coupling further comprising a second disc fixed to the second shaft, said two discs being fixed together at their outer peripheries.

Claim 6

A coupling as defined in claim 3, wherein said second disc is also formed with a spiral slot therethrough from one face to the opposite face thereof, said latter slot also extending in the form of a spiral continuously and uniformly increasing in size around its respective disc starting at a point adjacent its center and terminating at a point adjacent its outer periphery.

Claim 7

An elastic power-transmitting coupling capable of cushioning shocks upon transmission of rotary movement from one rotary shaft to an other, and further capable of accomodating substantial misalignment of the two rotary shafts, comprising: a first disc having a spiral slot formed therethrough from one face to the opposite face thereof, and a second disc having a spiral slot formed therethrough from one face to the opposite face thereof, each of said slots being in the form of a continuous spiral extending around its respective disc starting from a point adjacent to the center of the disc and terminating at a point adjacent to its outer periphery, said two discs being joined together along their outer peripheries, the center of each of said discs including means for fixing thereto one of the rotary shafts.

Claim 8

An elastic power-transmitting coupling capable of cushioning shocks upon transmission of rotary movement from one rotary shaft to an other, and further capable of accomodating substantial misalignment of the two rotary shafts, comprising: a first disc having a spiral slot formed therethrough from one face to the opposite face thereof, and a second disc having a spiral slot formed therethrough from one face to the opposite face thereof, each of said slots being in the form of a continuous spiral extending around its respective disc starting from a point adjacent to the center of the disc and terminating at a point adjacent to its outer periphery, said two discs being joined together along their outer peripheries, the center of each of said discs including means for fixing thereto one of the rotary shafts.

Claim 9

A coupling as defined in claim 5, wherein said spiral slots are formed in opposite directions on the respective discs.