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US 11,453,575 B2Granted
Lifting of building units
AssigneeIllinois Tool Works Inc.
InventorsNick Cui, Bernard Kennelly, Frank Davern
Life of this patent
Estimating the term…
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.
Claims12
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.
3 more elements
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.
2 more elements
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.
2 more elements
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.
1 more element
Dependencies are inferred from the claim text.