US 12,404,916 B2
Belt tensioner with integrated idler pulley for an endless drive belt of an engine
Anthony E. Lannutti, Fayetteville, AR (US); and Kevin G. Dutil, Bentonville, AR (US)
Assigned to MUVIQ S.R.L., Ivrea (IT)
Filed by DAYCO IP HOLDINGS, LLC, Roseville, MI (US)
Filed on Jan. 18, 2024, as Appl. No. 18/415,983.
Claims priority of provisional application 63/482,409, filed on Jan. 31, 2023.
Claims priority of provisional application 63/480,889, filed on Jan. 20, 2023.
Prior Publication US 2024/0247706 A1, Jul. 25, 2024
Int. Cl. F16H 7/12 (2006.01); F02B 67/06 (2006.01)
CPC F16H 7/1209 (2013.01) [F02B 67/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A belt tensioner comprising:
a spring case defining a receptacle for a torsion spring, the spring case comprising a first arm extending radially outward and axially rearward therefrom and terminating with a bore configured for fastening the spring case directly to an engine;
a support base non-rotationally connected to the spring case by a pivot tube that defines a first axis of rotation, the support base having a pulley mount that defines a second axis of rotation and at least one bore configured for fastening the support base to the engine;
a second arm having a first end coupled to the pivot tube for rotation about the first axis relative to the spring case and support base and having a second end that defines a pulley mount that defines a third axis of rotation; and
a torsion spring having a first end operatively coupled to the support base and a second end operative coupled to the second arm, wherein the torsion spring biases the second arm in a belt engaging direction relative to the support base.