US 11,997,954 B2
Agricultural baler with density doors moved by dual acting fluid cylinders
Sven Monbaliu, Zuienkerke (BE); Karel Naeyaert, Loppem (BE); Wim Syryn, Klerken (BE); and Glennys Verfaillie, Jabbeke (BE)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Apr. 30, 2021, as Appl. No. 17/246,036.
Application 17/246,036 is a continuation of application No. PCT/EP2019/079661, filed on Oct. 30, 2019.
Claims priority of application No. 18204205 (EP), filed on Nov. 2, 2018.
Prior Publication US 2021/0243956 A1, Aug. 12, 2021
Int. Cl. A01F 15/08 (2006.01); A01F 15/04 (2006.01); A01F 15/14 (2006.01); B30B 9/30 (2006.01); F15B 15/14 (2006.01)
CPC A01F 15/0825 (2013.01) [A01F 15/046 (2013.01); B30B 9/3025 (2013.01); F15B 15/1423 (2013.01); A01F 15/042 (2013.01); F15B 2215/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A bale chamber for an agricultural vehicle, the bale chamber comprising:
a plurality of movable density doors;
at least one fluid cylinder comprising a fluid chamber, a piston disposed in the fluid chamber to separate the fluid chamber into a piston side and a rod side, a cylinder rod coupled to the piston on the rod side and configured to move at least one of the density doors, a piston fluid port, and a rod fluid port; and
a fluid supply circuit fluidly coupled to the fluid chamber and configured to supply working fluid to the fluid chamber, the piston fluid port fluidly coupling the piston side of the fluid chamber to the fluid supply circuit and the rod fluid port fluidly coupling the rod side of the fluid chamber to the fluid supply circuit, the fluid supply circuit comprising a fluid supply controller that is selectively switchable to a first fluid supply mode and a second fluid supply mode, the fluid supply circuit being configured to supply working fluid to only the piston side of the fluid chamber when the fluid supply controller is in the first fluid supply mode and to supply working fluid to both the piston side and the rod side of the fluid chamber when the fluid supply controller is in the second fluid supply mode.