Oldham Coupling with Damping
An improved Oldham coupling that is a unitary object and in an embodiment comprises a first hub having a first projection and a second hub having a second projection. The two hubs are connected to each other by way of an intermediate disk having a first slot and a second slot, the slots being on opposite sides and perpendicular to each other. The first projection is received into the first slot and the second projection is received into the second slot. Elastomeric material is formed around the circumference of the disk to retain the assembly together as a unitary object.
1 . An Oldham coupling assembly comprising:
a first hub having a first projection;
a second hub having a second projection;
a disk having a first slot and a second slot, the slots on opposite sides and perpendicular to each other, the first projection received into the first slot and the second projection received into the second slot; and
an elastomeric material formed around the circumference of the disk to retain the assembly together.
2 . The assembly according to claim 1 , characterized in that the elastomeric material is overlapping a portion of each hub.
3 . The assembly according to claim 1 , characterized in that each hub has a circumferential notch.
4 . The assembly according to claim 3 , further characterized in that the elastomeric material is formed in each circumferential notch.
5 . The assembly according to claim 1 , characterized in that the elastomeric material is formed around the sides of the disk.
6 . The assembly according to claim 1 , characterized in that the disk has splines.
7 . The assembly according to claim 1 , characterized in that each projection is tapered.
8 . The assembly according to claim 7 , further characterized in that the taper is along an outer surface of each projection and extends from a flat surface in the middle of the outer surface to facilitate angular misalignment.
9 . A method of making an Oldham coupling assembly, the method comprising:
joining first and second hubs to opposite sides of an intermediate disk; and
forming an elastomeric material around the circumference of the disk to retain the assembly together.
10 . The method of claim 9 , further comprising forming the elastomeric material over a portion of each hub.
11 . The method of claim 9 , further comprising forming the elastomeric material in a circumferential notch about each hub.
12 . The method of claim 9 , further comprising forming the elastomeric material around the sides of the disk.
13 . The method of claim 9 , further comprising forming the elastomeric material in a space between each hub and the disk created by each hub having a tapered projection.
14 . The method of claim 9 , further comprising forming the elastomeric material around splines of the disk.
15 . An Oldham coupling assembly comprising:
a first hub having a first slot;
a second hub having a second slot;
a disk having a first projection and a second projection, the projections on opposite sides and perpendicular to each other, the first projection received into the first slot and the second projection received into the second slot; and
an elastomeric material formed around the circumference of the disk to retain the assembly together.
16 . The assembly according to claim 15 , characterized in that the elastomeric material is overlapping a portion of each hub.
17 . The assembly according to claim 15 , characterized in that each hub has a circumferential notch.
18 . The assembly according to claim 17 , further characterized in that the elastomeric material is formed in each circumferential notch.
19 . The assembly according to claim 15 , characterized in that the elastomeric material is formed around the sides of the disk.
20 . The assembly according to claim 15 , characterized in that the disk has splines.
21 . The assembly according to claim 15 , characterized in that each projection is tapered.
22 . The assembly according to claim 21 , further characterized in that the taper is along an outer surface of each projection and extends from a flat surface in the middle of the outer surface to facilitate angular misalignment.