US 11,866,894 B2
Helical pile foundation system
Justin E. Martin, Tupelo, OK (US); and Darin Willis, Plano, TX (US)
Assigned to Gregory Enterprises, Inc., Ada, OK (US)
Filed by Gregory Enterprises, Inc., Ada, OK (US)
Filed on Sep. 8, 2022, as Appl. No. 17/940,778.
Application 17/940,778 is a continuation of application No. 17/255,748, filed on Dec. 23, 2020.
Application 17/255,748 is a continuation of application No. 16/733,851, filed on Jan. 3, 2020, granted, now 10,995,461, issued on May 4, 2021.
Application 16/733,851 is a continuation of application No. 16/122,840, filed on Sep. 5, 2018, granted, now 10,526,758, issued on Jan. 7, 2020.
Prior Publication US 2023/0011581 A1, Jan. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E01F 9/685 (2016.01); E04H 12/22 (2006.01); E01F 9/631 (2016.01); E02D 27/42 (2006.01); B60W 60/00 (2020.01); G06V 20/56 (2022.01); E01F 15/04 (2006.01)
CPC E01F 9/685 (2016.02) [B60W 60/0015 (2020.02); E01F 9/631 (2016.02); E01F 15/0461 (2013.01); E02D 27/42 (2013.01); E04H 12/2223 (2013.01); G06V 20/56 (2022.01); B60W 2554/4044 (2020.02); B60W 2554/4049 (2020.02); E02D 2200/1685 (2013.01); E02D 2300/0029 (2013.01); E02D 2300/0032 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A post foundation system, comprising:
a shaft having a first and a second end;
a helical disk affixed to the first end of the shaft;
a sign post slip joint base affixed to the second end of the shaft having an opening for receiving a sign post within the shaft;
a movable sleeve carried by the shaft between the second end of the shaft and the helical disk, and,
at least one fin carried by the sleeve.