Patent · US Expired

Spiral displacement machine with angularly offset spiral vanes

US5171140A · kind A · utility

8Cited by

3References

3Claims

0Family size

Assignee

VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

Otto Schafer · Wolfsburg, DE
Claus Muller · Eckental, DE

Key dates

Filing date	Oct 3, 1991
Grant date	Dec 15, 1992
Priority date	—
Expiry date	Oct 3, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01C1/0246
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A spiral displacement machine has a displacer with a central disk and spiral vanes on both sides arranged to revolve eccentrically in a housing with spiral vanes to provide working chambers which rotate spirally. The beginning and end regions of the vanes are angularly offset so that the working chambers do not open or close simultaneously.

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