US 11,851,824 B2
Spike puller and method for pulling a railroad spike of a track
Otto Widlroither, Freilassing (DE); Bernhard Koch, Anger (DE); and Thomas Hoelzlwimmer, Burgkirchen an der Alz (DE)
Assigned to ROBEL Bahnbaumaschinen GmbH, Freilassing (DE)
Filed by ROBEL Bahnbaumaschinen GmbH, Freilassing (DE)
Filed on Jun. 24, 2021, as Appl. No. 17/356,778.
Claims priority of application No. 102021204712.2 (DE), filed on May 10, 2021.
Prior Publication US 2022/0356654 A1, Nov. 10, 2022
Int. Cl. B25C 11/02 (2006.01); B23P 6/00 (2006.01); E01B 29/32 (2006.01)
CPC E01B 29/32 (2013.01) [B23P 6/00 (2013.01); B25C 11/02 (2013.01); B66F 2700/00 (2013.01); Y10T 29/49819 (2015.01); Y10T 29/49822 (2015.01); Y10T 29/53848 (2015.01); Y10T 29/53943 (2015.01)] 14 Claims
OG exemplary drawing
 
1. A spike puller for pulling a railroad spike of a track, the spike puller comprising:
a housing;
a linear displacement unit mounted at said housing, said linear displacement unit including a hollow tube guided in said housing;
a claw unit for engaging a railroad spike, said claw unit being displaceable by said linear displacement unit in a linear manner relative to said housing in a displacement direction; and
a guiding portion having a length LFA, said hollow tube having a length LH, and said lengths having a length ratio of: 0.2≤LFA/LH≤1.0.