Dowell & Dowell
Slack adjuster
 A slack adjuster assembly for coupling a brake shaft to a power actuator comprising a bushing member fixed to the brake shaft and having an annular flange therearound and having an annular bearing surface next to the flange which carries a series of teeth on a shoulder facing toward the bearing surface, a lever having a hub member journaled on the bearing surface and having a toothed shoulder interengaging with the teeth on the flange when the hub member is moved toward the shoulder, a spring urging the hub member toward the flange to keep the teeth normally engaged, and a pawl carried in one of said members and having lugs engageable with teeth of the opposite member to separate the teeth by compressing the spring and to advance the engagement of the teeth in a direction determined by the direction of rotation of the pawl. 
Y F
Y10T F16D
additional inventional
Sergio
Campanini