Axial piston machine having a device for the electrically...

Details Axial piston machine having a device for the electrically... Axial piston machine having a device for the electrically...

2007-11-27

2007-11-27

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

C092S012200

Reexamination Certificate

active

11106218

ABSTRACT:
An axial piston machine having a swashplate or an oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional adjustment of the volumetric displacement. The adjustment unit comprises proportional magnets which can be activated electrically, and a control piston for controlling the oil pressure which moves the servopistons. The proportional magnets act on the control piston along a common tappet axis, a feedback device for feeding back the current swashplate or oblique-axis valve-segment position to the control piston being provided. The feedback device comprises spring levers6, 6′ which can pivot about an axis, the spring levers6, 6′ each being mounted on the pivot axis5with a bearing shell15, which are each composed of two component shells which support the spring lever6, 6′ at separate locations on the pivot axis5, and which each essentially enclose a half-space about the pivot axis5.

REFERENCES:
patent: 3812765 (1974-05-01), Himmler
patent: 4478136 (1984-10-01), Heiser et al.
patent: 4599050 (1986-07-01), Ishizaki et al.
patent: 4600364 (1986-07-01), Nakatani et al.
patent: 4756157 (1988-07-01), Appel
patent: 7121188 (2006-10-01), Thoms et al.

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