Anchor and clutch assembly
AssigneeMeadow Burke, LLC
InventorsDavid L. Kelly, Michael J. Recker
Life of this patent
Estimating the term…
Abstract
Anchors, clutches, and lifting systems are described herein that increase the size of a shear cone within a precast concrete panel without using multiple clutches and without increasing the complexity of the lift system. A shear cone is the volume within the panel that the anchor and clutch pull on when orienting and positioning the precast concrete panel. Anchors described herein encompass a larger volume of the panel in different ways to produce a larger shear cone. Similarly, the clutches described herein have features that allow a clutch to accommodate the improved anchors. As a result, the anchors, clutches, and lifting systems provide a larger shear cone in the panel to increase the load capacity of the lifting system and reduce the likelihood of failure.
Claims5
A lifting clutch for selectively engaging and receiving a lifting anchor embedded in a precast concrete panel, comprising:
- a top portion at least partially defining an opening, wherein a top surface of said top portion has a first radius of curvature, and said top portion has a width;
- a bottom portion defining a recess configured to receive an anchor, wherein a bottom surface of said bottom portion has a second radius of curvature, and said second radius of curvature is larger than said first radius of curvature;
- and
- a first wing and a second wing of said bottom portion extend outwardly to define a width of said bottom portion that is larger than said width of said top portion.
Dependencies are inferred from the claim text.