Shear pin safety coupling

Claim 2

A shearing pin safety coupling for connecting two shafts, with two halves of the coupling normally held together axially and rotatably by the pins and an angular contact bearing for axially holding together the two halves of the coupling when the pins are destroyed, said bearing including an annular projection adapted to rotate with one half of the coupling and to overlap the other half of the coupling, with a pair of opposed cooperating bearing surfaces formed between the cylindrical internal surface of the projection and the cylindrical external surface of the overlapped portion of the coupling, the bearing surfaces being formed as captivating endless ball bearing races of V or semicircular cross-section, which retain a set of bearing balls therebetween to permit relative rotation of said coupling halves while resisting relative axial movement.

Claim 3

A coupling as claimed in claim 1, in which the projection is divided in a plane intersecting its bearing surface and extending perpendicular to its axis, into a projection member fast with the one coupling half and a front check ring which can be screwed on.

Claim 4

A shearing pin safety coupling for connecting two shafts, with two halves of the coupling axially held together by the pins and an angular contact bearing for holding together the two halves of the coupling when the pins are destroyed, said bearing including an annular projection adapted to rotate with one half of the coupling and to overlap the other half of the coupling, with a pair of cooperating bearing surfaces formed between the cylindrical internal surface of the projection and the cylindrical external surface of the overlapped portion of the coupling, the bearing surfaces being formed as ball bearing races of V or semi-circular cross-section, which hold a set of bearing balls, said projection being divided in a plane intersecting its bearing surface and extending perpendicular to its axis, into a projection member fast with the one coupling half and a front check ring which can be screwed on, the mutually facing end surfaces of the fixed projection member and of the front check ring being axially stepped with formation of an endless rabbet.

Claim 5

A shearing pin safety coupling for connecting two shafts, with two halves of the coupling axially held together by the pins and an angular contact bearing for holding together the two halves of the coupling when the pins are destroyed, said bearing including an annular projection adapted to rotate with one half of the coupling and to overlap the other half of the coupling, with a pair of cooperating bearing surfaces formed between the cylindrical internal surface of the projection and the cylindrical external surface of the overlapped portion of the coupling, the bearing surfaces being formed as ball bearing races of V or semi-circular cross-section, which hold a set of bearing balls, said projection being divided in a plane intersecting its bearing surface and extending perpendicular to its axis, into a projection member fast with the one coupling half and a front check ring which can be screwed on, the mutually facing end surfaces of the fixed projection member and of the front check ring being axially stepped with formation of an endless rabbet.

Claim 6

A coupling as claimed in claim 3, in which at its end remote from the fixed projection member the front check ring has an inner flange which overlaps the other coupling half.

Claim 7

A coupling as claimed in claim 1, in which the coupling half member overlapped by the projection is divided in a plane intersecting its bearing surface and extending perpendicular to its axis into a fixed coupling half portion and a screwable-on coupling half facing ring.

Claim 8

A coupling as claimed in claim 1, in which an oil sealing ring is provided axially on each side of the two ball bearing races at a small axial distance therefrom.

Claim 9

A shearing pin safety coupling for connecting two shafts, with two halves of the coupling axially held together by the pins and an angular contact bearing for holding together the two halves of the coupling when the pins are destroyed, said bearing including an annular projection adapted to rotate with one half of the coupling and to overlap the other half of the coupling, with a pair of cooperating bearing surfaces formed between the cylindrical internal surface of the projection and the cylindrical external surface of the overlapped portion of the coupling, the bearing surfaces being formed as ball bearing races of V or semi-circular cross-section, which hold a set of bearing balls, the coupling half member overlapped by the projection being divided in a plane intersecting its bearing surface and extending perpendicular to its axis into a fixed coupling half portion and a screwable-on coupling half facing ring, the facing end surfaces of the overlapped coupling half portion and of the coupling half facing ring being axially stepped to form a continuous rabbet.

Claim 10

A shearing pin safety coupling for connecting two shafts, with two halves of the coupling axially held together by the pins and an angular contact bearing for holding together the two halves of the coupling when the pins are destroyed, said bearing including an annular projection adapted to rotate with one half of the coupling and to overlap the other half of the coupling, with a pair of cooperating bearing surfaces formed between the cylindrical internal surface of the projection and the cylindrical external surface of the overlapped portion of the coupling, the bearing surfaces being formed as ball bearing races of V or semi-circular cross-section, which hold a set of bearing balls, the coupling half member overlapped by the projection being divided in a plane intersecting its bearing surface and extending perpendicular to its axis into a fixed coupling half portion and a screwable-on coupling half facing ring, the facing end surfaces of the overlapped coupling half portion and of the coupling half facing ring being axially stepped to form a continuous rabbet.

Claim 11

A coupling as claimed in claim 7 in which an oil sealing ring is provided axially on each side of thE two ball bearing races at a small axial distance therefrom.

Claim 12

A coupling as claimed in claim 3 in which an oil sealing ring is provided axially on each side of the two ball bearing races at a small axial distance therefrom.

Claim 13

A coupling as claimed in claim 1 wherein said opposed cooperating bearing surfaces are axially stepped with the formation of an endless annular rabbet therebetween.