CHAIR SUPPORT FOR REINFORCING RODS

• US 3,788,025 A
• Filed: 05/17/1972
• Issued: 01/29/1974
• Est. Priority Date: 05/17/1972
• Status: Expired due to Term

• Current Assignee: Stannard D. Holmes
• Original Assignee: Stannard D. Holmes
• Inventors: Holmes, Stannard D.
• Primary Examiner(s): Abbott, Frank L.
• Assistant Examiner(s): Braun, Leslie A.
• Application Number:
  US05/254,132
• Time in Patent Office: 622 Days
• Field of Search: 52/684-688
• US Class Current: 52/685
• CPC Class Codes: E04C 5/168 Spacers connecting parts for reinforcements and spacing the reinforcements from the form

Abstract

A chair for supporting in right angular relation two reinforcing rods used in construction of concrete slabs has a lower arched base part and an upper rod supporting part integral with the base. The base is an arched structure with means for providing lateral, longitudinal and vertical support and strength. The rod supporting part comprises two spaced arms the lower parts of which form a saddle for receiving one reinforcing rod and the upper part of each of which is formed by two spaced upstanding inwardly concave arms the upper ends of which are spaced to provide an opening through which a second reinforcing rod arranged at right angles to the first rod may be introduced. The chair is of integral construction and is formed of a material causing the arms of each pair to be biased toward each other to firmly hold a reinforcing rod between them.

Claims

1. A chair for supporting two reinforcing rods positioned at right angles to each other, comprising a base part and a rod supporting part extending upward from the base part, the base part comprising an upwardly arched part, a surface engaging foot extending outwardly from each end of the arched part, horizontal pins extending in each direction from the intersection of each end of the arched part and the adjacent foot, a web extending across the interior of the arch, a vertical pin extending downwardly from the web, the lower surfaces of each foot and the horizontal and vertical pins being in the same plane to provide lateral, longitudinal and vertical support to the chair when positioned on a horizontal surface, the rod supporting part comprising a first pair of spaced upwardly extEnding arms each having a surface at its lower part which is curved toward the other arm to provide a saddle part on which a first rod is supported, said arms being so constructed and being formed of such material that they resiliently engage the sides of a rod positioned between them, each of said arms having above its lower saddle-forming part a second pair of upwardly extending arms which are spaced from each other in the direction of the axis of the saddle part with an opening between their upper extremities and which have outwardly curved inner surfaces providing surfaces within and on which a second rod is supported.