US 11,746,846 B2
Slack adjuster assembly for drum braking systems
Jeffrey R. Wittlinger, Uniontown, OH (US); Jay D. White, North Canton, OH (US); Dhawal P. Dharaiya, Twinsburg, OH (US); David L. Schaeffer, Louisville, OH (US); and Wyatt R. Weekley, Lincoln, NE (US)
Assigned to Hendrickson USA, L.L.C., Schaumburg, IL (US)
Filed by Hendrickson USA, L.L.C., Schaumburg, IL (US)
Filed on Aug. 11, 2021, as Appl. No. 17/399,144.
Claims priority of provisional application 63/071,455, filed on Aug. 28, 2020.
Prior Publication US 2022/0065317 A1, Mar. 3, 2022
Int. Cl. F16D 65/52 (2006.01)
CPC F16D 65/52 (2013.01) 21 Claims
OG exemplary drawing
 
1. A slack adjuster assembly for use with a heavy-duty vehicle drum brake system, the slack adjuster assembly comprising:
a slack adjuster;
a cam tube assembly; and
an interlock assembly, said interlock assembly being disposed on an outboard side of said slack adjuster and interconnecting said cam tube assembly with the slack adjuster, the interlock assembly having a plurality of components;
wherein at least one of said plurality of components of the interlock assembly and a component of the cam tube assembly cooperate to form a rotation reference mechanism for indexing of an automatic adjustment mechanism of said slack adjuster
the at least one of the plurality of components of the interlock assembly being at least partially disposed about said component of the cam tube assembly.