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IPGATE AG · IP Portfolio A · A2
| Inventors | Heinz Leiber, Valentin Unterfrauner |
| Priority | September 17, 2010 |
| Portfolio | IP Portfolio A · A2 |
| Innovations | 13 independent inventions |
| Jurisdictions | DE, US, CN — 5 patents, 13 independent claims — all granted |
Patent family E122 (PCT/EP2011/004476, priority 09/17/2010, applicant: IPGATE AG, inventors: H. Leiber, V. Unterfrauner) describes an actuating device for a vehicle braking system comprising a pedal-operated piston-cylinder unit that, via controllable valves, drives a travel simulator and indirectly an electrically driven master cylinder unit, which is connected to the wheel brakes via controllable valves.
The patent family comprises five intellectual property rights in three jurisdictions: In Germany, the parent application E122DE (DE 11 2011 102 270 B4) for the design of the pedal feel simulator and the divisional application E122DE1 (DE 11 2011 106 127) with a diagnostic method and a diagnostic device. In the U.S., the corresponding patent E122US (US 9,878,697 B2) with four independent claims for a device and E122US1 (US 10,493,967 B2) covering a diagnostic method and a diagnostic device. In China, patent E122CN (CN 103 108 785 B) with four independent device claims.
The serial three-piston arrangement of E122 was not implemented in series production in this design. However, the cost-effective implementation of a pedal feel simulator is particularly relevant for future market applications, especially through the use of a nonlinear return spring in combination with elastomer materials. Furthermore, both the connection of the travel simulator to the pressure piston circuit and the integration of a travel simulator into the closed brake circuit have proven advantageous and have become established in the market in 1-box brake systems.
Patent family E122 (PCT/EP2011/004476, priority 09/17/2010, applicant: IPGATE AG, inventors: H. Leiber, V. Unterfrauner) describes an actuating device for a vehicle braking system comprising a pedal-operated piston-cylinder unit that, via controllable valves, drives a travel simulator and indirectly an electrically driven master cylinder unit, which is connected to the wheel brakes via controllable valves.
The serial three-piston arrangement of the master cylinder described in E122 was not implemented in series production in this design. In a further developed version (reference to patent family E132), a parallel arrangement of the master cylinder and an electric pressure supply unit with its own piston (plunger) was pursued instead.
However, the cost-effective implementation of a pedal feel simulator is particularly relevant for future market applications, especially through the use of a nonlinear return spring in combination with elastomer materials. Furthermore, both the connection of the travel simulator to the pressure piston circuit and the integration of a travel simulator into the closed brake circuit have proven advantageous and have become established in the market in 1-box brake systems.
13 independent claims across 5 patents covering two inventive concepts: pedal feel simulator design (E122DE, E122US, E122CN) and integrated diagnostics (E122DE1, E122US1).
Invention Overview
| Invention | Cat. | Description | Keyword |
|---|---|---|---|
| E122DEDE 11 2011 102 270 B4 | Device | Parent application: actuating device with pedal-operated piston-cylinder unit, travel simulator connection via shut-off valve, and feed valve connection to the brake circuit. Concentric piston-cylinder arrangement. | WS-Design · Shut-off valve · Feed valve · Concentric |
| E122DE1 A1/A11DE 11 2011 106 127 | Method + Device | Diagnostic method: closing valves, building pressure with electromechanical drive, and detecting tightness of feed valve (A1). Actuator with integrated diagnostics for feed valve and travel simulator (A11). | WS-Diag · Feed valve tightness · Pressure build-up |
| E122US C1/C5/C9/C13US 9,878,697 B2 | Device | Four independent US device claims: concentric piston-cylinder with stroke simulator (C1); connecting device with at least one coupling (C5); hydraulic connection with normally closed (NC) valve (C9); hydraulic connection to reservoir with normally open (NO) valve (C13). | US · WS-Design · NC/NO valve variants |
| E122US1 C1/C10US 10,493,967 B2 | Method + Device | US diagnostic protection: method for closing control valves, building pressure, and diagnosing feed valve and travel simulator (C1). Actuator with integrated diagnostics via valve closure and pressure measurement (C10). | US · WS-Diag · Diagnostic method |
| E122CN A1–A4CN 103 108 785 B | Device | Four independent Chinese device claims covering concentric piston-cylinder arrangement with stroke simulator for the Chinese market. | CN · WS-Design · Concentric arrangement |
Family Overview
| File No. | Country | Status | Type | Application No. | Filed | Grant No. | Granted |
|---|---|---|---|---|---|---|---|
| E122DE | DE | Granted | Patent (parent) | DE 11 2011 102 270 | — | DE112011102270B4 | — |
| E122DE1 | DE | Granted | Patent (divisional) | DE 11 2011 106 127 | — | — | — |
| E122US | US | Granted | Patent | US 9,878,697 | — | US9878697B2 | — |
| E122US1 | US | Granted | Patent (divisional) | US 10,493,967 | — | US10493967B2 | — |
| E122CN | CN | Granted | Patent | CN 103 108 785 | — | CN103108785B | — |
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