Invention Grant
- Patent Title: Void protection system
- Patent Title (中): 空隙保护系统
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Application No.: US13860281Application Date: 2013-04-10
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Publication No.: US09206583B2Publication Date: 2015-12-08
- Inventor: Matthew J. Beschorner , Bryan A. Johnson , Brett J. Janson , Brandon Z. Barnes , Rustu Cesur
- Applicant: Caterpillar Global Mining LLC
- Applicant Address: US WI Oak Creek
- Assignee: Caterpillar Global Mining LLC
- Current Assignee: Caterpillar Global Mining LLC
- Current Assignee Address: US WI Oak Creek
- Agency: Foley & Lardner LLP
- Main IPC: E02F3/42
- IPC: E02F3/42 ; E02F3/30 ; E02F3/46 ; E02F9/22 ; F15B21/04

Abstract:
A void protection system for a mining shovel having an operator input device includes an independent metering valve assembly including one or more fluid source-cylinder valves for fluidly connecting the fluid source to the hydraulic cylinder. The system also includes a sensor assembly for monitoring the fluid pressure within the rod end and the head end of the hydraulic cylinder, and a control module. The control module is configured to monitor movement of the operator input device, monitor pressure within the hydraulic cylinder, increase the opening of the corresponding fluid source-cylinder valve and increase fluid flow from the fluid source to fill corresponding end of the hydraulic cylinder until pressure in the corresponding end of the hydraulic cylinder is above a first threshold pressure.
Public/Granted literature
- US20140308106A1 VOID PROTECTION SYSTEM Public/Granted day:2014-10-16
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