Electronic stroke sensor for air disc brake

US8616342B2 · kind B2 · utility

Assignee

• INDIAN HEAD INDUSTRIES, INC. · US

Inventors

• Thomas Edward Wallace · Charlotte, US
• Richard J. Rink · Charlotte, US
• Mark David Chandler · New York, US
• Glenn Singletary · Concord, US
• Wayne Oster · Redwood Valley, US
• Steve Lepard · Angola, US
• Christopher Prager · Concord, US

Key dates

• Filing date: Jun 17, 2011
• Grant date: Dec 31, 2013
• Expiry date: Sep 21, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2125/582
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A vehicle brake monitor assembly for an air disk brake includes a brake actuator having a pushrod projecting from inside a chamber of said brake actuator. The pushrod releasably actuates a lever arm of a caliper thereby moving the disk brake into a braking position when the pushrod is in an extended position and releasing the disk brake from the braking position when the pushrod is in a retracted position. The pushrod includes a pushrod shaft and a contact member biased in a telescoping relationship relative to the pushrod shaft and the lever arm of the caliper abuts the contact member counteracting the bias of the contact member. A sensor is integrated with the assembly proximate the contact member and detects movement of the pushrod relative to the lever arm and to the pushrod shaft.