Invention Grant
- Patent Title: Flow compensated restrictive orifice for overrunning load protection
- Patent Title (中): 流量补偿限流孔,用于超越负载保护
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Application No.: US12256869Application Date: 2008-10-23
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Publication No.: US08091355B2Publication Date: 2012-01-10
- Inventor: Joseph St. Aubin , Rodney Koch , Jason Asche , Jeret Hoesel , Todd Vanderlinde
- Applicant: Joseph St. Aubin , Rodney Koch , Jason Asche , Jeret Hoesel , Todd Vanderlinde
- Applicant Address: US ND West Fargo
- Assignee: Clark Equipment Company
- Current Assignee: Clark Equipment Company
- Current Assignee Address: US ND West Fargo
- Agency: Westman, Champlin & Kelly, P.A.
- Agent John D. Veldhuis-Kroeze
- Main IPC: F15B11/06
- IPC: F15B11/06 ; E02F9/22

Abstract:
A hydraulic circuit for an actuator that has a piston and piston rod that will move a load in a first direction, and which can be externally loaded in an opposite direction, includes a flow compensated valve between the actuator and a control valve. When the piston in the actuator is moved in the second opposite direction under the external load and the rate of flow of fluid out of the actuator through the flow compensated valve exceeds a selected rate, an orifice is introduced in the flow path to restrict flow from the actuator.
Public/Granted literature
- US20100101223A1 FLOW COMPENSATED RESTRICTIVE ORIFICE FOR OVERRUNNING LOAD PROTECTION Public/Granted day:2010-04-29
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