Lifting of building units

Patent metadata

Field	Value
Publication number	US-2020346902-A1
Application number	US-202016924803-A
Country	US
Kind code	A1
Filing date	Jul 9, 2020
Priority date	Jul 14, 2014
Publication date	Nov 5, 2020
Grant date	—

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; 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 lifting-component engager sized and shaped to releasably connect to a lifting component for lifting the building unit, wherein the lifting-component engager extends at least partially through the opening.

2 . The building unit of claim 1 , wherein the lifting anchor includes 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.

3 . The building unit of claim 2 , wherein the base includes an L-shaped support member.

4 . The building unit of claim 2 , wherein the support structure includes a chord and a web member transverse to one another.

5 . The building unit of claim 4 , wherein the first wall is attached to the chord and the second wall is attached to the web member.

6 . The building unit of claim 1 , wherein the lifting anchor is movable relative to the base between a recessed position and an extended position, wherein the lifting component engager extends at least partially through the opening when in the extended position.

7 . The building unit of claim 6 , 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.

8 . The building unit of claim 6 , wherein the lifting anchor 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.

9 . The building unit of claim 1 , wherein the lifting-component engager includes a head of the lifting anchor.

10 . The building unit of claim 9 , wherein the head defines a lifting component opening and the lifting component is releasably connectable to the lifting-component engager after insertion into the lifting component opening.

11 . The building unit of claim 1 , wherein the lifting anchor includes a plurality of separate formations each configured to be engaged by a pawl.

12 . The building unit of claim 11 , wherein the plurality of separate formations comprise teeth.

13 . A method for forming a building unit, the method comprising:
attaching sheeting to 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 lifting-component engager of a lifting anchor of the lifting attachment extends at least partially through the opening.

14 . The method of claim 13 , which includes mounting the lifting anchor to the support structure by attaching a first wall of the lifting anchor and a second wall of the lifting anchor to the support structure.

15 . The method of claim 14 , which includes mounting the first wall to a chord of the support structure and the second wall to a web member of the support structure that is transverse to the chord.

16 . The method of claim 15 , wherein the chord and the web member are perpendicular.

17 . The method of claim 13 , which includes mounting the lifting attachment to the support structure so the lifting anchor is movable relative to the support structure.

18 . The method of claim 13 , wherein the lifting anchor includes 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 which includes moving the lifting anchor relative to the base between a recessed position and an extended position, wherein the lifting component engager extends at least partially through the opening when in the extended position.

19 . The method claim 18 , 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.

20 . The method of claim 13 , wherein the lifting anchor includes 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 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 positon such that lifting anchor engages a bottom surface of the base.

Assignees

• Illinois Tool Works

Inventors

• Cui Nick
• Kennelly Bernard
• Davern Frank

Classifications

• B66C1/66 Primary

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

• E04G21/142

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

• B66C1/666

  for connection to anchor inserts embedded in concrete structures · 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