IP Verse

Actuator With Non-Reversible Screw-And-Nut System, Drum Brake And Braking Device Provided With Same

Patent No. EP3090190 (titled "Actuator With Non-Reversible Screw-And-Nut System, Drum Brake And Braking Device Provided With Same") was filed by Chassis Brakes on Dec 23, 2014. The application was issued on Oct 18, 2017.

Patent Summary

A linear actuator for motor vehicle drum brake shoes (12, 13) mounted on a plate (10) comprises a transmission sub-assembly (4) driven by a rotary drive (5) and a linear actuator assembly (3). The assembly utilizes a screw-and-nut system, formed by a rotary element (31) and a second element (32) engaging via male and female threads, to selectively move the first ends (122, 132) of the shoes apart against the drum. The system is characterized by a thread helix angle $\beta$ that is smaller than the friction angle $\phi$, with a difference between $\beta$ and $\phi$ not exceeding 3% of the friction angle's value. This configuration optimizes efficiency for service, parking, or emergency braking functions.

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CompanyOpposition DateRepresentative
AUMOVIO GERMANYJul 18, 2018KORNER

Dossier Documents

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  • Date

    Description

EP3090190

CHASSIS BRAKES
Application Number
EP14827446A
Filing Date
Dec 23, 2014
Status
Granted And Under Opposition
Sep 15, 2017
Publication Date
Oct 18, 2017
External Links
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