Truss lift stiffener
OwnerClarence Nowakinventor
Life of this patent
Estimating the term…
Abstract
A stiffener device for use in moving a truss is disclosed. A crane lift cable is attached to a spreader bar. Two lines from the spreader bar attach to the truss to move the truss using a crane. A stiffener body attachable to the truss by brackets allows the stiffener body to hang on the bottom chord of the truss. The stiffener body provides a significantly increased resistance to bending along the length of the truss. This stiffening prevents bending and flexing of the truss which can reduce the numbers of damaged trusses that can occur when setting trusses to a building structure.
Claims11
A device for use with a lift cable in moving a load, said device comprising;
- a lift cable attached to a spreader bar such that said lift cable supports said load;
- a stiffener body removably attachable to said load to stiffen said load wherein said stiffener body is attached to said spreader bar and the weight of said stiffener body rests on said load as said lift cable is moving said load,
- a first line attached to said spreader bar and a second line attached to said spreader bar;
- said first and second lines attachable to a load for lifting said load;
- at least a third line, said third line attaching said stiffener body to said spreader bar,
- wherein said stiffener body includes a plurality of attachment brackets along a length of said stiffener body, to attach said stiffener body to said load.
A device for use with a lift for moving a truss, said device comprising
- a spreader bar;
- a stiffener body adapted to removably attach to a truss to stiffen said truss at least during moving;
- wherein said stiffener body has a first position wherein said stiffener body is attached to said truss and a second position wherein said stiffener body is hanging from at least one of said spreader bar or said lift, wherein said stiffener body includes a plurality of attachment brackets spaced along a length of said stiffener body, each bracket including an opening adapted to fit over said truss to hold said stiffener body in said first position.
A device for use with a lift for moving a truss, said device comprising
- a stiffener body adapted to removably attach to a bottom chord of said truss to stiffen said truss at least during moving;
- wherein said stiffener body has a first position wherein said stiffener body is attached to said truss and a second position wherein said stiffener body is hanging from said lift adjacent said truss, wherein said stiffener body includes brackets adapted to fit over the bottom chord to hold the stiffener body on the truss and wherein at least one of said brackets is slidably mounted to the stiffener body.
Dependencies are inferred from the claim text.