SUPPORT SPACERS FOR CONCRETE REINFORCEMENT RODS

• US 3,694,989 A
• Filed: 01/05/1970
• Issued: 10/03/1972
• Est. Priority Date: 01/16/1969
• Status: Expired due to Term

• Current Assignee: Donald Taylor, Keith W. Oliver
• Original Assignee: Donald Taylor, Keith W. Oliver
• Inventors: Oliver, Keith W., Taylor, Donald
• Primary Examiner(s): Abbott, Frank L.
• Assistant Examiner(s): Braun, Leslie A.
• Application Number:
  US05/000,555
• Time in Patent Office: 1,002 Days
• Field of Search: 52/677,678,687,689 248/50,54,67.5,68,72,74R
• US Class Current: 52/678
• CPC Class Codes: E04C 5/203 Circular and spherical spacers

Abstract

A spacer for concrete reinforcement rods of a plastics material comprising a U shaped support member having teeth on the legs of the member for engagement by teeth on a locking member to secure the reinforcement rod in position between the legs.

Claims

1. A spacer device for mounting a relatively rigid reinforcemenT rod in concrete comprising a mounting member formed with a Ushaped portion having an arcuate rod receiving inner end section and parallel legs extending outwardly to an open end, a locking member adapted to be introduced through said open end into engagement with a rod at said inner end, cooperating interengaged slide guide means on said locking member and said legs comprising oppositely open end slots on said locking member within which said legs are slidably received, cooperating locking teeth on said locking member and said legs comprising a series of teeth on the inner faces of both of said legs and cooperating series of teeth at the base of each slot on the locking member, and oppositely projecting steadying arms on said locking member adapted to bear at their outer ends on a rod received in said arcuate inner end section of said mounting member.

2. The spacer device defined in claim 1, wherein said mounting member is an integral molded plastic unit, and said locking member is an integral molded plastic unit.

3. The spacer device defined in claim 1, wherein said mounting member is formed with a substantially circular rim, with said arcuate section substantially concentric with said rim and connected thereto by a plurality of radial spokes, and said opening being a gap in the periphery of said rim.

4. The spacer device defined in claim 1, wherein said locking member is formed with an external recess adapted to receiving a supporting member for an adjacent reenforcement rod.

5. The spacer device defined in claim 1, wherein said mounting and locking members are connected by a flexible strap that prevents accidental separation and permits operational insertion of the locking member into the mounting member.

6. A spacer device produced from plastics material for supporting relatively rigid reinforcement rods in concrete comprising the combination of a rod mounting member and a locking member, the mounting member incorporating a U-shaped portion having legs formed with projections for locking engagement with corresponding projections on the locking member for securing the reinforcement rod in position on the mounting member, said locking member being formed with a slot in each end to slide over the legs of the U-shaped portion to prevent sideways movement thereof and with a pair of oppositely projecting resilient arms extending to engage a reinforcement rod passing through said U-shaped portion on each side of the locking member to resiliently grip the rod at that side.