logo

For the Inventor, By the Inventor

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 10920802 B1

PDFFull Text
Date of Patent:
Feb. 16, 2021

Filed:

Jan. 08, 2019

Cylinder with check valve

Applicant:

Deere & Company, Moline, IL (US);

Inventors:

Arto Alfthan, Tarttila, FI;

Timo Neuvonen, Punkaharju, FI;

Joni Turunen, Joensuu, FI;

Samuli Jormanainen, Joensuu, FI;

Esa Jääskeläinen, Joensuu, FI;

Assignee:

DEERE & COMPANY, Moline, IL (US);

Attorney:
Primary Examiner:

F Daniel Lopez

Assistant Examiner:

Daniel S Collins

Int. Cl.
CPC ...
F15B 15/14 (2006.01); A01G 23/083 (2006.01); G01B 3/12 (2006.01);
U.S. Cl.
CPC ...
F15B 15/149 (2013.01); A01G 23/083 (2013.01); F15B 15/1457 (2013.01); F15B 15/1476 (2013.01); G01B 3/12 (2013.01); F15B 2211/47 (2013.01); F15B 2211/7051 (2013.01);
Abstract

A harvester head having at least one hydraulic actuator with a cylinder and a piston. The hydraulic actuator having at least a cylinder chamber and a piston rod chamber, both chambers being connected to a hydraulic circuit. The piston separating the cylinder chamber and the piston rod chamber, a cavity provided in the piston, hydraulically connecting the cylinder chamber with the piston rod chamber and a check valve in connection with the cavity that allows hydraulic medium flow in an opening direction of the check valve.

Find Patent Forward Citations

Alfthan, Arto. (2021). Cylinder with check valve (U.S. Patent No. 10920802). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10920802

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

Loading…