Patent · US Active

Oil scraper ring for a piston rod

US11808360B2 · kind B2 · utility

0Cited by

15References

16Claims

0Family size

Assignee

Hoerbiger Wien GmbH · AT

Inventors

Marian Janko-Grasslober · Wien, AT
Martin Lagler · Wien, AT
Andreas Kaufmann · Hohenahr, DE

Key dates

Filing date	Sep 17, 2019
Grant date	Nov 7, 2023
Priority date	—
Expiry date	Jun 9, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J15/56
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A scraper ring is provided with a plurality of sealing sections on the radially inner circumferential surface, each including a scraping edge, wherein the sealing sections are spaced axially apart from each other by inner circumferential grooves, with at least one recess provided on the circumference of the scraper ring which extends at least partially from a first axial ring end to a second axial ring end and extends at least partially in a direction different from the axial direction of the scraper ring. At least one drainage opening is provided on the outer circumferential surface of the scraper ring, which is connected to at least one inner circumferential groove for removing scraped oil from the inner circumferential grooves.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.