US 12,275,623 B2
Lifting apparatus
David Mann, Memmingen (DE)
Appl. No. 17/593,636
Filed by David Mann, Memmingen (DE)
PCT Filed Mar. 17, 2020, PCT No. PCT/DE2020/100207
§ 371(c)(1), (2) Date Sep. 22, 2021,
PCT Pub. No. WO2020/192838, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 10 2019 002 039.1 (DE), filed on Mar. 22, 2019.
Prior Publication US 2022/0017337 A1, Jan. 20, 2022
Int. Cl. B66C 23/00 (2006.01); B66C 5/02 (2006.01); B66C 23/18 (2006.01); B66C 23/42 (2006.01); B66C 23/70 (2006.01); B66C 23/74 (2006.01); B66C 23/78 (2006.01)
CPC B66C 23/18 (2013.01) [B66C 5/025 (2013.01); B66C 23/42 (2013.01); B66C 23/701 (2013.01); B66C 23/74 (2013.01); B66C 23/78 (2013.01); B66C 23/185 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A lifting device having three booms of adjustable length, which in each case have a first end section and a second end section opposite the first end section, in which
the first end sections of all booms are articulatedly connected to one another and
the second end sections are mounted articulatedly and rotatably in respective bearings, wherein
the bearings are arranged at fixed positions relative to one another,
in each boom at least the first end section can be rotated about the longitudinal axis of the boom with respect to the second end section,
the second end section of each of the booms can be rotated, relative to the respective bearing, both about a respective first axis as well as about a respective second axis rotated about the first axis, wherein the respective first axis and the respective second axis intersect or are skewed with respect to one another, and
the first end sections articulatedly connected to one another are movable within an azimuthal angular range comprising 360°.