Ledger truss for scaffolding
AssigneeUniversal Builders Supply, Inc.
InventorAlan J. Shalders
Life of this patent
Estimating the term…
Abstract
A ledger truss for scaffolding has a first ledger and a second ledger, each ledger having a longitudinal axis and being of uniform generally "I" shape in cross section along its length. A clamp bracket joins the first and second ledgers end to end at a butt joint with their axes aligned. The upper end of a vertical strut is attached to the clamp bracket, and an end bracket is attached to the end of each ledger remote from the clamp bracket. At least one first tensioned tie bar joins the end bracket on the first ledger to the lower end of the vertical strut, and at least one second tensioned tie bar joins the end bracket on the second ledger to the lower end of the vertical strut.
Claims20
A ledger truss for scaffolding, comprising
- a first ledger and a second ledger, each ledger having a longitudinal axis and being of uniform generally "I" shape in cross section along its length;
- a clamp bracket joining the first and second ledgers end to end at a butt joint with their axes aligned, the clamp bracket being generally tubular and receiving end portions of the first and second ledgers within it in telescoping relation;
- a vertical strut having an upper end joined to the clamp bracket and a lower end spaced apart from the clamp bracket;
- a first end bracket joined to an end of the first ledger remote from the butt joint;
- a second end bracket joined to an end of the second ledger remote from the butt joint;
- at least one first tensioned tie bar joining the first end bracket to the lower end of the vertical strut;
- and
- at least one second tensioned tie bar joining the second end bracket to the lower end of the vertical strut.
A ledger truss for scaffolding, comprising
- a first ledger, a second ledger, and a third ledger, each ledger having a longitudinal axis and being of uniform generally "I" shape in cross section along its length;
- a first clamp bracket joining the first and second ledgers end to end at a first butt joint with their axes aligned;
- a second clamp bracket joining the second and third ledgers end to end at a second butt joint with their axes aligned;
- each of the first and second clamp brackets being generally tubular and receiving end portions of the ledgers within it in telescoping relation;
- a first vertical strut having an upper end joined to the first clamp bracket and a lower end spaced apart from the first clamp bracket;
- a second vertical strut having an upper end joined to the second clamp bracket and a lower end spaced apart from the second clamp bracket;
- a first end bracket joined to an end of the first ledger remote from the first butt joint;
- a second end bracket joined to an end of the third ledger remote from the second butt joint;
- a first tensioned tie bar joining the first end bracket to the lower end of the first vertical strut;
- a second tensioned tie bar joining the lower end of the first vertical strut to the lower end of the second vertical strut;
- and
- a third tensioned tie bar joining the second end bracket to the lower end of the second vertical strut.
Dependencies are inferred from the claim text.