Lifting and leveling assembly for precast concrete slabs and method
OwnerSidney E. Francies, IIIinventor
Life of this patent
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Abstract
A lifting and leveling assembly configured to be embedded in a precast concrete slab for lifting a leveling a precast concrete slab includes a base plate, a threaded sleeve, an anchor plate, a thread protecting sleeve, a threaded lifting bolt and an end cap. Rotating the threaded lifting bolt in a first direction positions a bolt head on the threaded lifting bolt above a top surface of a precast concrete slab to accommodate the attachment of a lifting device. Rotating the threaded lifting bolt in a second direction positions the bolt head beneath the top surface of the concrete slab and causes the threaded shaft to exert a force on the base plate to level the precast concrete slab.
Claims19
A lifting and leveling assembly configured to be embedded in a precast concrete slab and for lifting and leveling the same, the lifting and leveling assembly comprising:
- an internally threaded sleeve;
- a threaded lifting bolt threaded into the threaded sleeve and including a threaded shaft and a bolt head;
- a hollow thread protecting sleeve disposed at least in part above the threaded sleeve and encompassing an upper portion of the threaded shaft;
- a removable end cap selectively covering the bolt head;
- a base plate configured for supporting relationship with the threaded sleeve;
- and
- an outer housing surrounding the threaded sleeve and base plate to releasably bind the two together, wherein the outer housing surrounds at least a portion of the threaded lifting bolt and the thread protecting sleeve is slidably received in an upper portion of the outer housing.
Dependencies are inferred from the claim text.