Vacuum lifter for lifting objects located in confined spaces below grade
AssigneeVacuworx Global, LLC
InventorsWilliam J. Solomon, Mason Owen
Life of this patent
Estimating the term…
Abstract
A vacuum lifter of this disclosure includes a spreader bar having a lifting lug at a top end and pad hanger locations at a bottom end; a pair of legs rotatably connected at a corresponding end of the spreader bar, each leg including a foot at a lower end of the leg; each leg having a first locking position in which the foot is below the spreader bar and a second locking position in which the foot is above the spreader bar; and a pair of vacuum pads adapted for connection to a vacuum source and to the pad hanger locations of the spreader bar. The spreader bar may be extendable. The vacuum source may be mounted on the spreader bar. The vacuum lifter is useful for lifting objects out of confined spaces below grade.
Claims18
A vacuum lifter comprising:
- a spreader bar including a lifting lug at a top end and pad hanger locations at a bottom end;
- a pair of legs rotatably connected at a corresponding end of the spreader bar, each leg rotatable about a central longitudinal axis of the spreader bar and including a foot at a lower end of the leg;
- each leg having a first locking position in which the foot is below the spreader bar and a second locking position in which the foot is above the spreader bar;
- and
- a pair of vacuum pads adapted for connection to a vacuum source and to the pad hanger locations of the spreader bar.
A vacuum lifter comprising:
- a spreader bar including a lifting lug at a top end and pad hanger locations at a bottom end;
- a pair of legs rotatably connected at a corresponding end of the spreader bar, each leg rotatable about a central longitudinal axis of the spreader bar and including a foot at a lower end of the leg;
- each leg having a first locking position in which the foot is below the spreader bar and a second locking position in which the foot is above the spreader bar, each leg including a cylindrical bushing at an upper end of the leg,
- a pair of vacuum pads adapted for connection to a vacuum source and to the pad hanger locations of the spreader bar,
- the spreader bar further including a pair of cylindrical tubes, each cylindrical tube located along a top end of the spreader bar at a corresponding end of the spreader bar, the cylindrical tube sized to receive a corresponding one of the cylindrical bushing;
- the cylindrical tube and the cylindrical bushing each having a thru hole, and a pair of pins, each pin sized for insertion into the thru holes of the cylindrical tube and the cylindrical bushing, the pair of legs being in a locked position when the pin is inserted into a corresponding pair of the thru holes.
A vacuum lifter comprising:
- a spreader bar including a lifting lug at a top end and pad hanger locations at a bottom end;
- two pairs of legs, each pair of legs rotatably connected at a corresponding end of the spreader bar and rotatable about a central longitudinal axis of the spreader bar, each leg including a foot at a lower end of the leg;
- each pair of legs having a first locking position in which the foot is below the spreader bar and a second locking position in which the foot is above the spreader bar;
- and
- a pair of vacuum pads adapted for connection to a vacuum source and to the pad hanger locations of the spreader bar.
Dependencies are inferred from the claim text.