Lifting of building units

Patent metadata

Field	Value
Publication number	US-11453575-B2
Application number	US-202016924803-A
Country	US
Kind code	B2
Filing date	Jul 9, 2020
Priority date	Jul 14, 2014
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

There is disclosed a lifting attachment for a building unit comprising sheeting and a support structure over which the sheeting is disposed, the attachment being configured such that it can be connected to or integrated into the support structure and comprising a lifting anchor that, when the attachment is so connected or integrated, is engageable by a component for lifting the unit such that a releasable interconnection between the component and the support structure passes through an opening in the sheeting.

First claim

What is claimed is:

1. A building unit comprising:
a support structure including a chord and a web member transverse to the chord;
sheeting disposed over the support structure, wherein the support structure and the sheeting define an opening extending through the support structure and the sheeting; and
a lifting anchor including:
a base including a first wall and a second wall transverse to the first wall, the base mounted to the support structure via at least one of the first and second walls, and
a lifting-component engager sized and shaped to releasably connect to a lifting component for lifting the building unit, wherein the lifting-component engager is movable from a recessed position to an extended position relative to the sheeting, wherein the lifting-component engager extends in the opening but not above the sheeting when in the recessed position, wherein the lifting-component engager extends through the opening above the sheeting and is engagable by the lifting component when in the extended position.

2. The building unit of claim 1 , wherein the base includes an L-shaped support member including the first wall and the second wall.

3. The building unit of claim 1 , wherein the first wall is attached to the chord and the second wall is attached to the web member.

4. The building unit of claim 1 , wherein lifting-component engager is threadably connectable to the base such that the lifting-component engager is movable relative to the base via rotation of the lifting-component engager relative to the base.

5. The building unit of claim 1 , wherein the lifting component engager is insertable through the base when the base is in a first position and engagable with a bottom surface of the base when the base is in a second, different position.

6. The building unit of claim 1 , wherein the lifting-component engager includes a head engagable by the lifting component when the lifting component engager is in the extended position.

7. The building unit of claim 6 , wherein the head is releasably connectable to a part of the lifting-component engager after insertion of the head into the lifting component.

8. A method for forming a building unit, the method comprising:
attaching sheeting to and above a support structure;
forming an opening through the support structure and the sheeting; and
mounting a lifting attachment to the support structure such that a movable lifting-component engager of a lifting anchor of the lifting attachment extends through the opening and above the sheeting when the lifting-component engager is in an extended position, and the lifting-component engager extends in the opening but does not extend above the sheeting when the lifting-component engager is in a recessed position,
wherein mounting the lifting attachment to the support structure includes attaching a first wall of the lifting anchor to a chord of the support structure and attaching a second wall of the lifting anchor to a web member of the support structure that is transverse to the chord.

9. The method of claim 8 , wherein the chord and the web member are perpendicular.

10. A method for forming a building unit, the method comprising:
attaching sheeting to and above a support structure;
forming an opening through the support structure and the sheeting; and
mounting a lifting attachment to the support structure such that a movable lifting-component engager of a lifting anchor of the lifting attachment extends through the opening and above the sheeting when the lifting-component engager is in an extended position, and the lifting-component engager extends in the opening but does not extend above the sheeting when the lifting-component engager is in a recessed position,
wherein the lifting anchor includes a base including a first wall and a second wall transverse to the first wall, and which includes mounting the base to the support structure via at least one of the first and second walls such that the lifting anchor is movable relative to the base from the recessed position to the extended position.

11. The method claim 10 , wherein the lifting anchor is threadably connectable to the base such that the lifting anchor is movable relative to the base via rotation of the lifting anchor relative to the base.

12. A method for forming a building unit, the method comprising:
attaching sheeting to and above a support structure;
forming an opening through the support structure and the sheeting; and
mounting a lifting attachment to the support structure such that a movable lifting-component engager of a lifting anchor of the lifting attachment extends through the opening and above the sheeting when the lifting-component engager is in an extended position, and the lifting-component engager extends in the opening but does not extend above the sheeting when the lifting-component engager is in a recessed position, wherein the lifting anchor includes a base including a first wall and a second wall transverse to the first wall, and which includes mounting the base mounted to the support structure via at least one of the first and second walls, and which includes inserting the lifting anchor through the base when the base is in a first position and moving the base into a second different position such that lifting anchor engages a bottom surface of the base.

Assignees

• Illinois Tool Works

Inventors

• Cui Nick
• Kennelly Bernard
• Davern Frank

Classifications

• B66C1/666

  for connection to anchor inserts embedded in concrete structures · CPC title

• B66C1/66 Primary

  for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof · CPC title

• E04B1/35

  Extraordinary methods of construction, e.g. lift-slab, jack-block (E04B1/34 takes precedence; falsework, shuttering for shaping walls, floors, ceilings or roofs in situ E04G11/04; conveying or assembling of building materials E04G21/00; working measures on existing buildings E04G23/00) · CPC title

• E04G21/142

  Means in or on the elements for connecting same to handling apparatus (E04B1/38 takes precedence) · CPC title