Patent · US Active

Arrangement for supporting a shaft of a vacuum pump and a vacuum pump with such an arrangement

US7828512B2 · kind B2 · utility

7Cited by

5References

8Claims

0Family size

Assignee

PFEIFFER VACUUM · FR

Inventors

Martin Eilers · Marburg, DE
Andreas Rippl · Wetzlar, DE
Christopher-Mark Rippl · Wetzlar, DE
Tobias Stoll · Steffenberg, DE

Key dates

Filing date	Aug 6, 2007
Grant date	Nov 9, 2010
Priority date	—
Expiry date	May 5, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2360/45
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An arrangement for supporting a shaft of a vacuum pump includes a first bearing for supporting the shaft at one of its end, a second bearing for supporting the shaft at another of its ends and formed as a rolling bearing, a holder for receiving the second bearing and including an oscillating base, a fixation member secured in the vacuum pump housing, metallic connection members for connecting the oscillating base with the fixation member and axial springs arranged between the oscillating base and the fixation member and providing for the axial stiffness of the holder which is greater than its radial stiffness thereof and greater than the axial stiffness of the first bearing.

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