Compressor, Disc Body And Seal

Patent No. EP4264050 (titled "Compressor, Disc Body And Seal") was filed by Neuman & Esser on Dec 14, 2021. The application was issued on Jan 29, 2025.

Patent Summary

A compressor comprises a stationary part and a part oscillating along a main axis, defining an axial leakage path. Multiple annular chambers are arranged axially in succession between these parts, with at least one chamber containing a seal to close or reduce the leakage path. A plurality of bypasses fluidically interconnect pairs of chambers. To distribute pressure differences more homogeneously across seals and reduce wear at high-pressure and low-pressure extremes, the compressor is characterized by a graduated bypass design: any bypass located closer to the high-pressure side possesses a minimum cross-section smaller than that of a bypass located closer to the low-pressure side. This configuration is applicable to both piston rings and piston rod packings.

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Patent Oppositions (2)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
BURCKHARDT COMPRESSIONOct 29, 2025WILMING
HOERBIGER WIENOct 27, 2025PATENTANWALTE PINTER & WEISS

Dossier Documents

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  • Date

    Description

EP4264050

NEUMAN & ESSER
Application Number
EP21839839A
Filing Date
Dec 14, 2021
Status
Granted And Under Opposition
Dec 26, 2024
Publication Date
Jan 29, 2025