Invention Grant
- Patent Title: Hydraulic drive for executing a linear movement
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Application No.: US15735637Application Date: 2016-07-05
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Publication No.: US10578227B2Publication Date: 2020-03-03
- Inventor: Armin Goll
- Applicant: VOITH PATENT GMBH
- Applicant Address: DE Heidenheim
- Assignee: VOITH PATENT GMBH
- Current Assignee: VOITH PATENT GMBH
- Current Assignee Address: DE Heidenheim
- Agency: Shumaker, Loop & Kendrick, LLP
- Agent James D. Miller
- Priority: DE102015009991 20150731; DE102016102387 20160211
- International Application: PCT/EP2016/065758 WO 20160705
- International Announcement: WO2017/021080 WO 20170209
- Main IPC: F16K31/122
- IPC: F16K31/122 ; F04B39/08 ; F15B20/00 ; F01D21/18 ; F15B15/28 ; F15B1/02 ; F15B21/042

Abstract:
A hydraulic drive for executing a linear movement includes a motor, a pump, a lifting cylinder having the one linearly movable piston and a cylinder housing with at least one first connection and at least one second connection, a spring arranged such that the piston can be extended or retracted when the spring is in the relaxed state, and at least one first valve with which the first connection and the second connection of the cylinder housing can be fluidly connected. At least one second valve connected in parallel with the first valve is further provided, wherein the first valve has a maximum volumetric throughflow which is greater than the maximum volumetric through-flow of the second valve.
Public/Granted literature
- US20180172177A1 HYDRAULIC DRIVE FOR EXECUTING A LINEAR MOVEMENT Public/Granted day:2018-06-21
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