Method and Apparatus for Attaching Temporary Lifting Members to an Existing Lifting Anchor
AssigneeMeadow Burke, LLC
InventorsMichael J. Recker, Randy Lance Osborne, James Zachery Petersen
Life of this patent
Estimating the term…
Abstract
A hoisting assembly for precast concrete structures is provided. A shackle is joined to an embedded anchor member by a pin or bolt, and the shackle is provided with load bearing members to accommodate various loads in a manner that reduces risk of damage to concrete and provides for a more efficient anchor.
Claims20
A hoisting assembly adapted for lifting a precast concrete element which has at least one anchoring member embedded therein, the assembly comprising:
- a locking bolt with an arcuate configuration on a first end;
- a hoisting shackle having a toroidal portion, the toroidal portion comprising a slot positioned on at least an outer circumference of the toroidal portion for receiving the first end of the locking bolt;
- said hoisting shackle further comprising a void portion on a lower end for receiving an anchoring member and an internal arcuate surface having a radius, the internal arcuate surface oriented substantially perpendicular to the toroidal portion, and the internal arcuate surface adapted for contacting the anchoring member, wherein the hoisting shackle and the anchoring member are provided in force transmitting communication when the first end of the locking bolt is received by the slot and the anchoring member.
A hoisting assembly adapted for erecting a precast concrete element which has at least one anchoring member embedded therein, the assembly comprising:
- a hoisting shackle having a hollow toroidal portion, the hollow toroidal portion comprising a slot proximal at least an outer circumference of the hollow toroidal portion for receiving a bolt;
- the hoisting shackle comprising a void portion for receiving an anchoring member and at least one bearing point, the bearing point comprising a width greater than a width of a remainder of the toroidal portion and the bearing point adapted for contacting the anchoring member.
A hoisting assembly adapted for lifting a precast concrete element which has at least one anchoring member embedded therein, the assembly comprising:
- a hoisting shackle having a toroidal portion and an outer circumference;
- at least a portion of the outer circumference comprising a recess for receiving a locking bolt;
- the hoisting shackle further comprising a void portion for receiving an anchoring member;
- a lateral protrusion extending outwardly from the toroidal portion, the lateral protrusion at least partially defining an internal arcuate surface provided substantially perpendicular to the circumference, and the internal arcuate surface adapted for contacting an anchoring member.
Dependencies are inferred from the claim text.