Pedal simulator using spring with non-linear response

US6347518B1 · kind B1 · utility

Assignee

• KELSEY-HAYES-COMPANY · US

Inventors

• Andrew W. Kingston · Rhens, DE
• Salvatore Oliveri · Filsen, DE
• Robert L. Ferger · Homburg, DE
• Thomas Weigert · Pocking, DE
• Peter Every · Livonia, US

Key dates

• Filing date: Aug 6, 1999
• Grant date: Feb 19, 2002
• Expiry date: Aug 6, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T13/20
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A pedal simulator utilizing springs to provide a brake pedal with a non-linear, progressively increasing response characteristic for pedal travel versus force exerted on the brake pedal similar to a conventional hydraulic braking system. In a preferred embodiment, the pedal simulator is integrated into the housing of an associated master cylinder. The non-linear, progressively increasing response characteristic is provided in one embodiment by a conical spring having a non-uniform helix angle. In second and third embodiments, the non-linear, progressively increasing response characteristic is provided by a plurality of cylindrical coil springs.