US 11,939,732 B2
Device for warning or barrier gate
Andrew F. Chatten, Elburn, IL (US); and Ted J. Fiock, Elburn, IL (US)
Assigned to FENCING SUPPLY GROUP ACQUISITION, LLC, Dunwoody, GA (US)
Filed by Fencing Supply Group Acquisition, LLC, Dunwoody, GA (US)
Filed on Oct. 21, 2019, as Appl. No. 16/658,680.
Claims priority of provisional application 62/748,497, filed on Oct. 21, 2018.
Prior Publication US 2020/0123723 A1, Apr. 23, 2020
Int. Cl. E01F 13/06 (2006.01); E01F 9/00 (2016.01)
CPC E01F 13/06 (2013.01) [E01F 9/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of manufacturing an arm assembly for a warning or barrier gate, comprising:
aligning a first arm section and a second arm section, where the first arm section terminates in a tenon, and the second arm section terminates in a mortise, and the mortise is proximate to and aligns with the tenon when the first arm section is aligned with the second arm section;
forming a mechanical bond between the mortise and the tenon;
removably fastening the mortise and the tenon to form at least part of the arm assembly; and
wherein the arm assembly is configured to rotate about a lift shaft and a rotational center of the lift shaft is offset about 45 degrees from a breakaway arm connected to the second arm section.