US 12,258,777 B2
Post puller
Peter Chester, Wannanup (AU)
Assigned to Chester Brown Industries Pty Ltd, Port Kennedy (AU)
Appl. No. 17/768,833
Filed by Chester Brown Industries Pty Ltd, Port Kennedy (AU)
PCT Filed Oct. 7, 2020, PCT No. PCT/AU2020/051075
§ 371(c)(1), (2) Date Apr. 13, 2022,
PCT Pub. No. WO2021/072482, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 2019264574 (AU), filed on Oct. 14, 2019; and application No. 2020244540 (AU), filed on Oct. 1, 2020.
Prior Publication US 2024/0102310 A1, Mar. 28, 2024
Int. Cl. E04H 17/26 (2006.01)
CPC E04H 17/265 (2013.01) 6 Claims
OG exemplary drawing
 
1. A post puller including:
a scissor linkage having a coupling end and a post end, the scissor linkage being moveable between a first position and a second position;
a coupling assembly located at the coupling end of the scissor linkage, the coupling assembly being operatively adapted to connect the scissor linkage to a pulling mechanism; and
a post gripping assembly located at the post end of the scissor linkage, the post gripping assembly including a first gripping jaw and a second gripping jaw, the first and second gripping jaws being movable between an open position and a closed position as the scissor linkage is moved between the first position and the second position;
wherein the first and second gripping jaws are adapted to form a picket receiving opening shaped to receive a star picket when the first and second gripping jaws are located in the closed position;
wherein the picket receiving opening is substantially T-shaped, and
wherein the first gripping jaw is a male gripping jaw and the second gripping jaw is a female gripping jaw operatively adapted to co-operate with the male gripping jaw to define an opening to receive the horizontal leg of the T-shaped picket.