US 12,128,532 B2
Universal joint
Tai Hung Chen, Chang-Hua County (TW)
Assigned to INFAR INDUSTRIAL CO., LTD., Chang-Hua County (TW)
Filed by INFAR INDUSTRIAL CO., LTD., Chang-Hua County (TW)
Filed on Nov. 29, 2021, as Appl. No. 17/536,214.
Claims priority of application No. 110104052 (TW), filed on Feb. 3, 2021.
Prior Publication US 2022/0241938 A1, Aug. 4, 2022
Int. Cl. B25B 23/00 (2006.01); F16D 3/38 (2006.01)
CPC B25B 23/0014 (2013.01) [F16D 3/38 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A universal joint comprising:
a first joint member having a first end to which a second joint member is coupled and a second end to which a third joint member is coupled, wherein the first and the second joint members are pivotally connected with each other about a first axis of rotation, wherein the first and third joint members are pivotally connected with each other about a second axis of rotation, and a retaining device which includes a first resilient member and a first retainer working cooperatively for preventing inadvertent relative movements between the first and the second joint members, wherein the first joint member has a first supporting portion at the first end thereof, wherein the first retainer has a first retaining portion at a second end thereof supported on the first supporting portion, wherein the first supporting portion forms a first curved surface being convex and the first retaining portion forms a second curved surface being concave and corresponding to the first curved surface, and wherein the first retainer is urged by the first resilient member.