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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10119249 B1

PDFFull Text
Date of Patent:
Nov. 06, 2018

Filed:

Mar. 31, 2014

Control device for confluence flow rate of working device for construction machinery and control method therefor

Applicant:

Volvo Construction Equipment Ab, Eskilstuna, SE;

Inventors:

Jae-Hoon Lee, Gyeongsangnam-do, KR;

Hea-Gyoon Joung, Busan, KR;

Sang-Hee Lee, Gyeongsangnam-do, KR;

Assignee:

VOLVO CONSTRUCTION EQUIPMENT AB, , SE;

Attorney:

Lerner, David, Littenberg, Krumholz & Mentlik, LLP

Primary Examiner:

Thomas E Lazo

Assistant Examiner:

Daniel Collins

Int. Cl.
CPC ...
F16D 31/02 (2006.01); E02F 9/22 (2006.01); F15B 11/17 (2006.01); E02F 9/20 (2006.01); F15B 13/06 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2228 (2013.01); E02F 9/2004 (2013.01); E02F 9/2267 (2013.01); E02F 9/2285 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01); F15B 11/17 (2013.01); F15B 13/06 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/20576 (2013.01); F15B 2211/255 (2013.01); F15B 2211/27 (2013.01); F15B 2211/30595 (2013.01); F15B 2211/7142 (2013.01);
Abstract

Disclosed are a control device for confluence flow rate of a working device and a control method therefor, the control device being capable of minutely operating a working device when a flow rate supplied to the working device is merged or blocked. Provided is a control device for confluence flow rate of a working device for construction machinery according to the present invention, the control device comprising: first and second hydraulic pumps and a pilot pump; first and second hydraulic operating levers; first and second working devices operated by operating oil supplied from the first and second hydraulic pumps; a control valve for the first working device, installed on a supply path between the first hydraulic pump and the first working device; a control valve for the second working device, installed on a supply path between the second hydraulic pump and the second working device; a confluence valve installed on the supply path upstream of the control valve for the second working device; a first proportional control valve installed in a pilot line between the pilot pump and the confluence valve; and a controller for calculating, as electrical signals, pilot pressures applied to the control valves for first and second working devices in proportion to the operation amount of the first and second hydraulic operating levers and thus applying the operated electrical signal to the first proportional control valve.

Find Patent Forward Citations

Lee, Jae-Hoon. (2018). Control device for confluence flow rate of working device for construction machinery and control method therefor (U.S. Patent No. 10119249). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10119249

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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