Patent ID: 11865862
Assignee: HENDRICKSON USA, L.L.C.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 23:
24. A disc brake hub and rotor assembly for a heavy-duty vehicle, the disc brake hub and rotor assembly comprising:
a hub receivable on and rotatable about an axle spindle of a heavy-duty vehicle;
a rotor including a disc segment, a flange mounting segment, and a substantially cylindrical sleeve segment connecting the disc segment and the flange mounting segment, the flange mounting segment having an axial thickness;
a plurality of circumferentially arranged openings extending axially through the flange mounting segment of the rotor;
a flange connectable with the flange mounting segment of the rotor and separately with the hub;
a plurality of circumferentially arranged openings extending axially through the flange;
a plurality of wheel studs extendable through the openings in the flange mounting segment of the rotor and through the openings in the flange;
the flange mounting segment of the rotor having an inboard facing surface at least part of which is for engaging a portion of the plurality of wheel studs, the inboard facing surface being substantially planar and free of wheel stud clearance reliefs;
at least one of the wheel studs having a knurled portion extending axially for a length through an opening in the flange mounting segment of the rotor, the knurled portion for engaging surfaces of the openings in the flange mounting segment, the length of the knurled portion being no greater than the axial thickness of the flange mounting segment; and
the hub including a cylindrical surface for supporting and centering the flange on the hub, an outboard facing annular surface for engaging an inboard facing annular surface of the flange to establish the axial position of the flange on the hub, and an annular groove located between the cylindrical surface of the hub and the outboard facing annular surface of the hub, the annular groove having a specific configuration with surfaces of three different radii and an axially extending cylindrical surface located among the different radii.