Patent ID: 9044815
Filing Date: 2015-06-02
Classification: B23D,E02F,E04G,F16C,Y10T

Abstract:
1. A dovetail coupling arrangement for securing two removable parts along a coupling axis which are supporting segments of a shaft having a shaft axis, wherein the coupling arrangement is suited to resist translational forces orthogonal to the coupling axis, the arrangement comprising: a) a first part having a bore extending along the shaft axis to accept the shaft and having a receiver extending along the coupling axis, wherein the coupling axis is parallel to the shaft axis and wherein the receiver has an inner wall with a receiver wall profile; b) a second part having a bore extending along the shaft axis to accept the shaft and having a projection extending along the coupling axis and an outer wall with a projection wall profile, wherein a substantial portion of the outer wall of the projection corresponds to the inner wall of receiver such that the projection mates with the receiver with a slip fit; c) wherein the receiver of the first part and the projection of the second part are slidably receivable and directly connected with one another and, wherein the receiver profile and the projection profile define mating interlocking walls along the coupling axis to restrict movement of the projection within the receiver along all directions orthogonal to the coupling axis and wherein the bore in the first part and the bore in the second part are adapted to accept and secure the shaft; d) wherein when viewed along the coupling axis from the end, the projection profile has a dovetail shape with an outer bottom surface and a primary outer top surface, wherein the bottom and outer top surfaces are connected by opposing outer angled walls and wherein the receiver has an open section with only an inner bottom surface and opposing inner angled walls extending upwardly therefrom such that when the first part and the second part are mated, only the bottom surfaces and opposing angled walls of the projection and the receiver are engaged; and e) wherein the receiver adjacent to the open section further includes a primary enclosed section with the inner bottom surface and the opposing inner angled walls common with the open section and additionally includes a primary inner top surface connecting the inner angled walls, wherein when the first part and the second part are mated, additionally the primary outer top surface of the projection is engaged with the primary inner top surface of the receiver.