Eunjoo C Hopkins

US Patent:

7958978, Jun 14, 2011

Filed:

Aug 9, 2007

Appl. No.:

11/891103

Inventors:

Marshall D. Snyder - Birch Run MI, US
Eunjoo C. Hopkins - Farmington Hills MI, US
Thomas V. Valvano - Saginaw MI, US

Assignee:

BWI Company Limited S.A. - Luxembourg

International Classification:

F16D 65/12

US Classification:

188218XL, 188 18 A, 267161

Abstract:

A brake hub assembly including a hub defining a central axis, a plurality of guide pins, each of the plurality of guide pins extending from the hub and being generally aligned with the central axis, and a disc having at least two friction surfaces, the disc defining a plurality of guide pin receiving bores, wherein each of the plurality of guide pin receiving bores are positioned to receive an associated one of the plurality of guide pins therethrough such that the disc is moveable relative to the hub along the central axis.

US Patent:

8317170, Nov 27, 2012

Filed:

May 12, 2011

Appl. No.:

13/106185

Inventors:

Marshall D. Snyder - Birch Run MI, US
Eunjoo C. Hopkins - Farmington Hills MI, US
Thomas V. Valvano - Saginaw MI, US

Assignee:

BWI Company Limited S.A. - Luxembourg

International Classification:

F16F 1/34

US Classification:

267161, 267163

Abstract:

A spring for applying a biasing force to a disc of a brake hub assembly including a hub having a circumferential groove, at least one disc, and a plurality of guide pins for rotatably coupling the hub and the disc wherein the spring comprises a band for circumferentially engaging the hub. The spring is characterized by a plurality of axial position retention tabs circumferentially spaced and extending radially inwardly from the band for engaging the circumferential groove of the hub and for preventing axial movement between the spring and the hub. The spring is further characterized by a plurality of circumferential position tabs circumferentially spaced and extending radially outwardly from the band and being generally U-shaped and defining a guide pin opening for at least partially engaging one of the guide pins for rotatably coupling the spring and the hub.

US Patent:

20080011561, Jan 17, 2008

Filed:

Jul 12, 2006

Appl. No.:

11/485605

Inventors:

Eunjoo C. Hopkins - Farmington Hills MI, US
Patrick N. Hopkins - Farmington Hills MI, US
Thomas V. Valvano - Saginaw MI, US
Jerome A. Limpach - Tipp City OH, US
Eric W Jesme - Swartz Creek MI, US

International Classification:

B60T 1/06

US Classification:

188 18 A

Abstract:

A brake rotor assembly for a dual brake disc braking system includes an annular ring having a plurality of teeth. The teeth are disposed radially about a central axis of the annular ring, and extend inward toward the central axis. The teeth are for slideably engaging a hub (wheel end) having a plurality of channels. The annular ring includes a plurality of pins extending outwardly from the annular ring. A friction disc is disposed radially about the annular ring, and is in interlocking engagement with the plurality of pins. The annular ring and the plurality of teeth are integrally cast from a high strength corrosion resistant material having a tensile strength greater than 260 megapascals to resist fracture during high stress braking conditions and high thermal loads. The friction disc is cast around the annular ring from a grey cast iron.