US 11,738,732 B2
Automatic retarding control system
Steven Edward Johnson, Metamora, IL (US); and Adam J Adeeb, Naperville, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Apr. 28, 2021, as Appl. No. 17/242,529.
Prior Publication US 2022/0348180 A1, Nov. 3, 2022
Int. Cl. B60T 15/36 (2006.01); B60T 13/14 (2006.01); B60T 17/04 (2006.01); F16K 17/04 (2006.01); B60T 17/22 (2006.01)
CPC B60T 15/36 (2013.01) [B60T 13/148 (2013.01); B60T 17/04 (2013.01); B60T 17/222 (2013.01); F16K 17/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A retarding control assembly for a brake valve, comprising:
a bleed line configured for arrangement between:
a tank line beginning at a brake and extending to a tank via a brake spool; and
a spring chamber that delivers a flow of fluid through the bleed line and to the tank line when a brake pedal is pressed, the bleed line comprising:
a check valve configured to allow fluid flow from the spring chamber to the tank; and
a check valve bypass configured to allow fluid flow from the tank line to the spring chamber past the check valve and defining a restricted pathway.