US 12,305,720 B2
Coupling members that join first and second rotary members
Paul Matzen, Barnton (GB); and Klaus-Dieter Meck, Manchester (GB)
Assigned to JOHN CRANE UK LIMITED, Slough (GB)
Appl. No. 17/625,537
Filed by John Crane UK Limited, Slough (GB)
PCT Filed Jul. 9, 2020, PCT No. PCT/GB2020/051658
§ 371(c)(1), (2) Date Jan. 7, 2022,
PCT Pub. No. WO2021/005375, PCT Pub. Date Jan. 14, 2021.
Claims priority of provisional application 62/871,827, filed on Jul. 9, 2019.
Claims priority of application No. 1910750 (GB), filed on Jul. 26, 2019.
Prior Publication US 2022/0275839 A1, Sep. 1, 2022
Int. Cl. F16D 3/72 (2006.01)
CPC F16D 3/72 (2013.01) [F16D 2250/00 (2013.01); Y10T 403/453 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A coupling member to join first and second rotary members, the coupling member comprising:
a unitary body having a first coupling element, a second coupling element, and a hub, wherein the unitary body forms a single piece with the hub extending between and connecting the first coupling element to the second coupling element,
wherein:
the first coupling element defines a first plane, the second coupling element defines a second plane with the first and second planes being parallel, and the hub defines a hub axis normal to the first and second planes,
the first coupling element comprises a plurality of first connection elements arranged about a circumference of a first circle having a first radius extending from the hub axis, wherein a material of the first coupling element in the first circle and in the first plane is less than the area of the first circle, and
the second coupling element comprises a plurality of second connection elements arranged about a circumference of a second circle having a second radius extending from the hub axis, wherein a material of the second coupling element in the second circle and in the second plane is less than the area of the second circle;
wherein the second circle is different than the first circle.