US 11,654,728 B2
Steering pivot pin forming an internal pneumatic passage
Adam Frey, Racine, WI (US); Homer Hawk, Franklin, WI (US); and Sylvain Michon, Oak Creek, WI (US)
Assigned to POCLAIN HYDRAULICS INDUSTRIE, Verberie (FR)
Appl. No. 16/627,234
Filed by POCLAIN HYDRAULICS INDUSTRIE, Verberie (FR)
PCT Filed Jun. 28, 2018, PCT No. PCT/FR2018/051588
§ 371(c)(1), (2) Date Dec. 27, 2019,
PCT Pub. No. WO2019/002774, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 1756152 (FR), filed on Jun. 30, 2017.
Prior Publication US 2020/0122526 A1, Apr. 23, 2020
Int. Cl. B60C 23/00 (2006.01); F04D 25/08 (2006.01); F04D 25/06 (2006.01)
CPC B60C 23/00381 (2020.05) [B60C 23/00354 (2020.05); B60C 23/00363 (2020.05); F04D 25/06 (2013.01); F04D 25/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An assembly comprising a hydraulic apparatus which comprises a rotor and a stator, the rotor being rotatably mounted relative to the stator along a second axis of rotation, and being secured to a spindle for mounting of a vehicle wheel,
pivot element configured for mounting on an axle, and movable in rotation relative to the hydraulic apparatus along a first axis of rotation, the stator being rotatably mounted relative to the axle along the first axis of rotation,
wherein an air chamber is formed between the pivot element and the hydraulic apparatus, said air chamber being connected to a distribution conduit arranged in the hydraulic apparatus, and to an axle conduit arranged in the pivot element, so as to form a pneumatic conduit between the pivot element and the hydraulic apparatus, in order to allow air to be conveyed for the inflation/deflation of a tire.