Patent · US Expired

Piston of a rotary piston engine

US4971533A · kind A · utility

2Cited by

2References

7Claims

0Family size

Assignee

Wankel GmbH · DE

Inventors

Franz Sutter · Niederdorf, CH
Werner Schubert · Wiesloch, DE

Key dates

Filing date	Jan 13, 1989
Grant date	Nov 20, 1990
Priority date	—
Expiry date	Jan 13, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston of a rotary piston engine of trochoidal type of construction, which is radially divided and the parts of which are connected shiftable axially against each other via axial guide bolts and among each other engaging against an elastomeric or resiliently deformable sealing ring, whereby the axial seals of the piston in the sidewalls thereof are structurally fixed or stationary sealing strips. The radial edges of these sealing strips coincide or cover themselves with the contours of the piston flanks or sides and they have cuts, notches or depressions in the piston corners for the radial seals of the piston which are in alignment with the grooves thereof.

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