US 12,152,489 B2
Modular tunnel formwork device
Reiner Kern, Paradiso (CH)
Assigned to KERN TUNNELTECHNIK SA, Paradiso (CH)
Filed by KERN Tunneltechnik SA, Paradiso (CH)
Filed on Dec. 6, 2022, as Appl. No. 18/062,199.
Claims priority of application No. 22150523 (EP), filed on Jan. 7, 2022; and application No. 22152345 (EP), filed on Jan. 20, 2022.
Prior Publication US 2023/0220773 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21D 11/40 (2006.01); E21D 11/10 (2006.01)
CPC E21D 11/102 (2013.01) [E21D 11/105 (2013.01); E21D 11/40 (2013.01)] 15 Claims
OG exemplary drawing
 
1. Tunnel formwork device comprising:
a frame,
at least two support structures connectable to the frame and spaced apart from one another in a longitudinal direction for supporting the frame on a tunnel floor,
the frame carrying at least two hydraulic support cylinders at at least two positions spaced apart from one another in the longitudinal direction, which the at least two hydraulic support cylinders can be connected to longitudinal beams running in the longitudinal direction, which longitudinal beams carry tunnel formwork elements,
at least one lifting device is connected with the frame and carries at least one working platform, the at least one lifting device having a lifting drive for moving the at least one working platform relative to the frame.