US 11,986,857 B2
Screen tightening in mobile multi-deck screening devices
Jouni T. Rajala, Tampere (FI); and Timo Leinonen, Tampere (FI)
Assigned to METSO OUTOTEC FINLAND OY, Tampere (FI)
Appl. No. 17/926,698
Filed by Metso Outotec Finland Oy, Tampere (FI)
PCT Filed May 24, 2021, PCT No. PCT/FI2021/050371
§ 371(c)(1), (2) Date Nov. 21, 2022,
PCT Pub. No. WO2021/240057, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 20205524 (FI), filed on May 25, 2020.
Prior Publication US 2023/0191456 A1, Jun. 22, 2023
Int. Cl. B07B 1/48 (2006.01)
CPC B07B 1/48 (2013.01) [B07B 2201/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A screen medium side tensioner for a mobile multi-deck screening device, comprising:
at least two linear tension rods each movable along a linear axis;
a tensioning link configured responsive to tightening the linear tension rods to move in a direction parallel to the linear axis to engage and tension a screen medium on a side of the screen medium, when the screen medium side tensioner is installed to the mobile multi-deck screening device; and
for each of the at least two linear tension rods, an adjusting member configured to cause linear movement of the respective linear tension rod along the linear axis;
the tensioning link being configured to tension the side of the screen medium that is located above the at least two linear tension rods, wherein the screen medium side tensioner further comprising a retractor configured, responsive to untightening the at least two linear tension rods, to retract the tensioning link so that the tensioning link disengages the screen medium.