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IPGATE AG · IP Portfolio A · A1
| Inventors | Heinz Leiber, Valentin Unterfrauner, Christian Köglsperger |
| Priority | June 2, 2010 |
| Portfolio | IP Portfolio A · A1 |
| Innovations | 4 independent inventions |
| Jurisdictions | DE, FR (EP), GB (EP), US — 6 patents, 4 independent claims — all granted |
The E120 patent family comprises six patents in four jurisdictions (DE, FR, GB, US): E120DE (DE 10 2010 022 493) with one independent device claim and one independent method claim, E120EP (EP 2 731 836 B1), also with one independent device claim and one independent method claim—legally valid in France (E120EPFR) and the United Kingdom (E120EPGB)—as well as E120US (US 9,278,679 B2) with two independent claims. A total of 6 independent claims.
The invention relates to the use of the existing, spring-loaded ABS/ESP reservoir as a hydraulic emergency buffer in the event of a blocked drive or transmission of the brake booster. In the event of a malfunction, the system can use switchable valves to direct fluid from the wheel brakes into the reservoir, thereby releasing brake pressure in a controlled manner. This reliably prevents the brakes from locking up—the vehicle remains steerable and drivable without additional components or external power sources.
Note: The German validation of the EP patent (E120EPDE) was revoked due to double patenting with the national DE patent (E120DE). However, the EP patent remains in force in France and the United Kingdom.
The E120 patent family comprises six patents in four jurisdictions (DE, FR, GB, US): E120DE (DE 10 2010 022 493) with one independent device claim and one independent method claim, E120EP (EP 2 731 836 B1), also with one independent device claim and one independent method claim—legally valid in France (E120EPFR) and the United Kingdom (E120EPGB)—as well as E120US (US 9,278,679 B2) with two independent claims. A total of 6 independent claims.
The invention relates to the use of the existing, spring-loaded ABS/ESP reservoir as a hydraulic emergency buffer in the event of a blocked drive or transmission of the brake booster. In the event of a malfunction, the system can use switchable valves to direct fluid from the wheel brakes into the reservoir, thereby releasing brake pressure in a controlled manner. This reliably prevents the brakes from locking up—the vehicle remains steerable and drivable without additional components or external power sources.
The EP claim is broader than the DE claim (no restriction to piston accumulator chambers or ABS/ESP association). The German EP validation (E120EPDE) was revoked due to double patenting with the national DE patent; the EP patent remains in force in FR and GB. The US claim uses the keyword FS-AC (Accumulator Chamber) with its own wording.
Six independent claims across three patents, covering the device and method for fail-safe pressure relief in all four jurisdictions (DE, FR, GB, US).
Litigation
Double patenting with the national DE patent E120DE
The German validation of the EP patent (E120EPDE) was revoked due to double patenting with the national DE patent (E120DE). However, the EP patent remains in force in France (E120EPFR) and the United Kingdom (E120EPGB), so the European protection is unaffected outside Germany.
Invention Overview
| Invention | Cat. | Description | Keyword |
|---|---|---|---|
| E120DE A1DE 10 2010 022 493 | Device | Brake system with ABS/ESP piston reservoir chamber: storage chamber provided for ABS and/or vehicle stability control function serves to receive pressure medium from the wheel brake in the event of a malfunction — pressure relief without external power. | Fail-safe · ABS accumulator · Pressure relief · No external power |
| E120DE A6DE 10 2010 022 493 | Method | Method for pressure relief in the event of a malfunction: when locked drive or transmission is detected and brake pedal had previously been actuated, the control device opens controllable valves to relieve pressure in at least one wheel brake via the accumulator. | Fault detection · Valve opening · Wheel brake relief |
| E120EPFR A1EP 2 731 836 B1 (FR) | Device | Brake system with storage chamber for pressure relief in the event of a malfunction — French market protection via EP validation. | Fail-safe · EP France · Storage chamber |
| E120EPGB A1EP 2 731 836 B1 (GB) | Device | Brake system with storage chamber for pressure relief in the event of a malfunction — UK market protection via EP validation. | Fail-safe · EP Great Britain · Storage chamber |
| E120US C1US 9,278,679 B2 | Device | Brake system with storage chamber for a locked drive — US device claim. Spring-loaded piston accumulator serves as the emergency buffer. | US · Fail-safe · Locked drive · Accumulator |
| E120US C7US 9,278,679 B2 | Method | Method for pressure relief via a storage chamber — US method claim. Controlled valve opening to direct brake circuit pressure into accumulator when drive is locked. | US · Method · Pressure relief · Valve control |
Family Overview
| File No. | Country | Status | Type | Application No. | Filed | Grant No. | Granted |
|---|---|---|---|---|---|---|---|
| E120DE | DE | Granted | Patent | DE 10 2010 022 493 | Jun. 2, 2010 | — | — |
| E120EP | EP (FR + GB) | Granted | Patent (DE validation revoked — double patenting) | EP 2 731 836 | — | EP2731836B1 | — |
| E120US | US | Granted | Patent | US 9,278,679 | — | US9278679B2 | — |
Explore
Three generations of pressure control.
IBS Pressure Control History →