Invention Grant
- Patent Title: Variable float and variable blade impact
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Application No.: US16555864Application Date: 2019-08-29
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Publication No.: US11408144B2Publication Date: 2022-08-09
- Inventor: Adam Zell , Anthony K. Kraft
- Applicant: Deere & Company
- Applicant Address: US IL Moline
- Assignee: Deere & Company
- Current Assignee: Deere & Company
- Current Assignee Address: US IL Moline
- Agency: Michael Best & Friedrich LLP
- Main IPC: E02F3/84
- IPC: E02F3/84 ; E02F3/76 ; E02F9/20 ; E02F9/22 ; F15B21/00 ; F15B11/08

Abstract:
A method and control system operable to control movement of a work implement of a work vehicle. The control system includes a reservoir that retains fluid, a pump in fluid communication with the reservoir, and an actuator in fluid communication with the pump. The actuator has a first side and a second side. A control valve is fluidly positioned between the pump and the actuator, a first proportional relief valve is fluidly positioned between the pump and the first side of the actuator, and a second proportional relief valve is fluidly positioned between the pump and the second side of the actuator. The first proportional relief valve is configured to permit flow of fluid from the first side of the actuator to the reservoir when a pressure at the first side of the actuator exceeds a pressure set point.
Public/Granted literature
- US20210062463A1 VARIABLE FLOAT AND VARIABLE BLADE IMPACT Public/Granted day:2021-03-04
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