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US 7,243,905 B2Granted
Heavy object lifting apparatus and method
AssigneeJack B. Henderson Construction
InventorMark Henderson
Life of this patent
Estimating the term…
Abstract
A lifter with an adjustable wheel base comprising a lever assembly, an adjustable axle assembly, and a lifting assembly. The lifting assembly may be magnetic and may additionally comprise safety cables having other attachment means.
Claims19
An object lifter comprising:
- a lever comprising two ends;
- at least one adjustable axle assembly disposed along a length of said lever between said two ends and comprising:
- more than three wheelbase width adjustment positions;
- at least two vertical depending struts linked to said lever;
- and
- a lifting assembly disposed at one of said two ends of said lever for lifting an object located below said lifting assembly, said lifting assembly comprising an attachment assembly for connecting said lifting assembly to the object to be lifted, said lifting assembly further comprising at least one cable disposed on said lever or a crossbar of said axle assembly, said cable disposed between said lever or axle assembly crossbar and said attachment assembly, said attachment assembly comprising a magnet.
3 more elements
An object lifter comprising:
- a lever comprising two ends;
- at least one adjustable axle assembly disposed along a length of said lever between said two ends and comprising:
- more than three wheelbase width adjustment positions;
- at least two vertical depending struts linked to said lever;
- and
- a lifting assembly disposed at one of said two ends of said lever for lifting an object located below said lifting assembly, said lifting assembly comprising an attachment assembly for connecting said lifting assembly to the object to be lifted, said lifting assembly further comprising at least one cable disposed on said lever or a cross bar of said axle assembly, said cable disposed between said lever or axle assembly crossbar and said attachment assembly, said attachment aesembly comprising at least one trench cover locking pin attachment assembly having a locking pin disposed on an end of a cable, wherein said cable is disposed between said locking pin and a lever or axle assembly crossbar in said lever.
3 more elements
An object lifter comprising:
- a lever comprising two ends:
- an axle assembly comprising:
- an axle cross bar, said axle cross bar disposed along a length of said lever between said two ends:
- an axle attachment bar in which said axle bar is removably disposed to provide for disassembly and ease in portability and storing of said lifter;
- said lever comprising a length greater than a width of said axle assembly;
- and
- at least one lifting assembly, disposed at one of said two ends of said lever for lifting an object located below said lifting assembly, said lifting assembly comprising a magnet and an attachment assembly for connecting said lifting assembly to the object to be lifted.
4 more elements
Dependencies are inferred from the claim text.