Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Cylinders parallel to rotation axis
Reexamination Certificate
2006-10-17
2006-10-17
Look, Edward K. (Department: 3745)
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Cylinders parallel to rotation axis
C092S012200
Reexamination Certificate
active
07121188
ABSTRACT:
An axial piston machine having a swash plate or 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 comprising proportional magnets which can be activated electrically, and a control piston for controlling the oil pressure which moves the servopistons, the proportional magnets acting on this control piston along a common tappet axis. A feedback device for feeding back the current swash plate or oblique axis valve segment position is provided. The feedback device comprises spring levers and a pointer which can be pivoted about an axis, the pointer which is embodied as a two-armed lever engaging in the control piston on one side of the pivot axis, and between the spring levers on the other side.
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: 2006/0008358 (2006-01-01), Thoms et al.
Fiebing Carsten
Hames Bernd
Thoms Reinhardt
Wüstefeld Martin
Leslie Michael
Look Edward K.
Sauer-Danfoss Inc.
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