US 12,410,040 B1
Telescoping crane and related methods
Steve Napieralski, Winona, MN (US); and Gregory Lucas, La Crescent, MN (US)
Assigned to OZ Lifting Products, LLC, Winona, MN (US)
Filed by OZ Lifting Products, LLC, Winona, MN (US)
Filed on Sep. 22, 2022, as Appl. No. 17/934,480.
Application 17/934,480 is a continuation of application No. 16/567,344, filed on Sep. 11, 2019, granted, now 11,453,578.
This patent is subject to a terminal disclaimer.
Int. Cl. B66C 23/70 (2006.01); B66C 23/04 (2006.01); B66C 23/16 (2006.01); B66C 23/06 (2006.01)
CPC B66C 23/706 (2013.01) [B66C 23/04 (2013.01); B66C 23/166 (2013.01); B66C 23/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A crane comprising:
a mast coupled to an outer telescoping boom;
an inner telescoping boom coupled within the outer telescoping boom, wherein the inner telescoping boom comprises an inner sleeve coupled within an outer sleeve; and
a threaded rod rotatably coupled within the inner telescoping boom;
wherein a maximum distance the crane is configured to telescope is equal to a maximum distance the outer telescoping boom is configured to telescope.