US 12,280,989 B2
Drywall lifting apparatus
Stephen M. Kopp, Fremont, NH (US)
Filed by Professional Framing Systems LLC, Fremont, NH (US)
Filed on Jun. 16, 2023, as Appl. No. 18/211,052.
Claims priority of provisional application 63/352,937, filed on Jun. 16, 2022.
Prior Publication US 2024/0076168 A1, Mar. 7, 2024
Int. Cl. B66C 23/48 (2006.01)
CPC B66C 23/48 (2013.01) 15 Claims
OG exemplary drawing
 
1. An apparatus for lifting and transporting a bulky cargo, said apparatus comprising:
a. a base platform defining a front side and a rear side that are connected by two lateral sides, said base platform fitted with a pair of front wheels proximate to said front side and a pair of rear wheels proximate to said rear side, wherein said front wheels are larger than said rear wheels such that when both front and rear wheels are resting on the ground, a vertical mast erected on said base platform tilts towards said rear side at a tilt angle;
b. said mast having a top and a bottom and extends at least six feet in height with a cable guide disposed proximate to said mast top, a raised platform supported by one or more vertical supports erected on said base platform, said raised platform in turn supports a winch comprising a drum onto which a cable is wound, wherein said cable further traverses over said top or proximate to said top and is guided in between said cable guide such that a distal end of said cable is available over said front side of said base platform for fastening a cargo thereto through a fastening means;
c. one or more structural stabilizers for preventing said vertical mast from movement relative to said base platform;
d. a jack for raising and lowering a portion of said base platform such that said tilt angle reaches between 0 and 45 degrees; and
e. a battery pack and a counterweight disposed proximate to said rear side of said base platform to prevent said cargo up to at least 1,600 pounds in weight from toppling during tilting, said battery pack electrically connected to said winch.