Patent · US Expired

Swashplate axial piston pump

US4576554A · kind A · utility

16Cited by

5References

13Claims

0Family size

Assignee

Hydromatik GmbH · DE

Inventors

Ludwig Wagenseil · Vöhringen, DE
Manfred Lotter · Neu-Ulm, DE

Key dates

Filing date	Nov 7, 1984
Grant date	Mar 18, 1986
Priority date	—
Expiry date	Nov 7, 2004

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/126
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a swash plate axial piston pump having several pistons, the piston heads of which are held in contact with the swash plate by means of a retraction plate, and having a central pressure-regulating valve which is forced against a valve spring by the pressure in the pressure chamber. The object is to provide a way of fixing the retraction plate on the swash plate which is simple and cheap to construct and install. This is achieved by arranging and fixing the valve spring between the valve body and the retraction plate.

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