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US 11,236,771 B2Granted
Actuating piston and adjustment installation
AssigneeRobert Bosch GmbH
InventorBernd Huehn
Life of this patent
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Abstract
An actuating piston for a hydrostatic adjustment installation includes at least one sealing and guiding unit which is insertable into a circumferential recess of an actuating piston. The circumferential recess is composed of two regions, and has the effect of improving the guiding and sealing of the actuating piston. The actuating piston is arranged in an adjustment installation.
Claims14
An actuating piston for a hydrostatic adjustment installation comprising:
- an external shell face defining a circumferential recess;
- and
- a sealing and guiding unit encompassing the external shell face in a region of the circumferential recess, the sealing and guiding unit configured to guide the actuating piston in an actuating cylinder of the hydrostatic adjustment installation so as to be stable in terms of tilting and displaceable in an axial manner, and to seal a gap between the external shell face of the actuating piston and an internal shell face of the actuating cylinder,
- wherein the circumferential recess has a first region having a guide region for the sealing and guiding unit that is configured to absorb transverse forces, and a second region having protrusions,
- wherein the first region has a larger axial extent than the second region, and
- wherein the guide region protrudes from a bottom surface of the circumferential recess and has a height with respect to the bottom surface of the recess that is less than a height of the protrusions in the second region.
3 more elements
An adjustment installation comprising:
- an actuating cylinder;
- and
- an actuating piston comprising:
- an external shell face defining a circumferential recess;
- and
- a sealing and guiding unit encompassing the external shell face in a region of the circumferential recess, the sealing and guiding unit configured to guide the actuating piston in the actuating cylinder so as to be stable in terms of tilting and displaceable in an axial manner, and to seal a gap between the external shell face of the actuating piston and an internal shell face of the actuating cylinder,
- wherein the circumferential recess has a first region having a guide region for the sealing and guiding unit that is configured to absorb transverse forces, and a second region having protrusions,
- wherein the first region has a larger axial extent than the second region, and
- wherein the guide region protrudes from a bottom surface of the circumferential recess and has a height with respect to the bottom surface of the recess that is less than a height of the protrusions in the second region.
6 more elements
Dependencies are inferred from the claim text.