AU2011101760A4

AU2011101760A4 - A bar chair

Info

Publication number: AU2011101760A4
Application number: AU2011101760A
Authority: AU
Inventors: Ian Butler
Original assignee: Australian Steel Company Operations Pty Ltd
Current assignee: Australian Steel Company Operations Pty Ltd
Priority date: 2010-08-06
Filing date: 2011-07-21
Publication date: 2015-08-27
Anticipated expiration: 2019-07-21
Also published as: AU2011204917A1

Abstract

A BAR CHAIR Abstract A bar chair (10) including a base (11) that is generally planar and that is to rest on a surface (12) that would typically be provided by a formwork sheet. Extending s upwardly from the base (11) is a body (14) that provides a plurality of sides (15). The sides (15) provide a plurality of sockets (17) arranged in co-operating pairs of sockets (17, 18 and 19) that support the mesh.

Description

S&F Ref: P006093 AUSTRALIA PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT Name and Address The Australian Steel Company (Operations) Pty Ltd, of Applicant: an Australian company, ACN 069 426 955, of Level 40, 259 George Street, Sydney, New South Wales, 2000, Australia Actual Inventor(s): Ian Butler Address for Service: Spruson & Ferguson St Martins Tower Level 35 31 Market Street Sydney NSW 2000 (CCN 3710000177) Invention Title: A bar chair Associated Provisional Application Details: [33] Country: [31] Appl'n No(s): [32] Application Date: AU 2010903527 06 Aug 2010 The following statement is a full description of this invention, including the best method of performing it known to me/us: 5845c(5463466_1) 1 A BAR CHAIR Technical Field The present invention relates to bar chairs employed in the concrete industry, and more particularly but not exclusively to bar chairs employed to support mesh (such as 5 reinforcing mesh) and/or reinforcing rods to be embedded in concrete. Background of the Invention Mesh, such as reinforcing mesh, and bars are employed in concrete structures. When forming generally horizontal structures such as slabs, the mesh and bars need to be located at a desired position within the structure to efficiently function as a reinforcing for 10 the structure. Typically the mesh and bars are held at a desired height by bar chairs. The bar chairs are of a variety of constructions including welded wire and moulded plastics. A disadvantage of known bar chairs is that they do not provide in a single bar chair, a configuration enabling the mesh and/or bars to be secured at a selected desired is height. Object of the Invention It is the object of the present invention to overcome or substantially ameliorate the above disadvantage. Summary of the Invention 20 There is disclosed herein a bar chair integrally moulded from plastics material so as to be of a unitary construction, the chair having: a longitudinal axis that is to extend generally upwardly from a surface upon which the bar chair is to rest; and an upwardly extending body terminating with six sockets, each of the sockets 25 being configured to receive and support a rod that is to extend across the bar chair, the sockets being arranged in opposing pairs, the sockets of each pair being located on opposite sides of the longitudinal axis and having the chair height, with each pair of sockets being at a different height so that the bar chair provides for securing the rod at a selected one of three heights provided by the sockets.

2 Preferably, the bar chair further including a base with the body being secured to the base and extending upwardly therefrom. Preferably, the base is generally planar, and the body tapers upwardly from the base. s Preferably, the base has an upper edge providing the sockets, with the sockets open upwardly. Preferably, said body has six sides, each side providing a respective one of the sockets. Preferably, the sockets are equally angularly spaced about said axis. 10 Preferably, the sockets are equally radially spaced from said axis. Brief Description of the Drawings A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings wherein: Figure 1 is a schematic isometric view of a bar chair; 15 Figure 2 is a schematic first side elevation of the bar chair of Figure 1; Figure 3 is a schematic second side elevation of the bar chair of Figure 1; and Figure 4 is a schematic top plan view of the bar chair of Figure 1. Detailed Description of the Preferred Embodiment In the accompanying drawings there is schematically depicted a bar chair 10. In 20 this embodiment the bar chair 10 is integrally moulded from plastics material, so as to be of a unitary construction The bar chair 10 includes a base 11 that is generally planar and that is to rest upon a surface 12 that would typically be provided by a formwork sheet. The bar chair 10 has a generally central longitudinal axis 13 that is to extend 25 upwardly from the surface 12. Extending upwardly from the base 11 is a body 14 that is provided with a plurality of sides 15. The sides 15 converge toward the axis 13 from the base 11 so that the body 14 tapers upwardly from the base 11.

3 The sides 15 provide an upper edge that is configured to provide a plurality of sockets 16. The sockets 16 are arranged in opposing pairs 17, 18 and 19. The sockets of each pair of sockets 17, 18 and 19 are located on opposite sides of the axis 13. Each pair of sockets 17, 18 and 19 is arranged at a different height so that the bar s chair 10 is adapted to support mesh and/or bars at a selected one of three heights. Preferably each of the sides 15 is provided with an aperture 20 which facilitates concrete entering the hollow interior 21 of the body 14.

Claims

1. A bar chair integrally moulded from plastics material so as to be of a unitary construction, the chair having: a longitudinal axis that is to extend generally upwardly from a surface upon 5 which the bar chair is to rest; and an upwardly extending body terminating with six sockets, each of the sockets being configured to receive and support a rod that is to extend across the bar chair, the sockets being arranged in opposing pairs, the sockets of each pair being located on opposite sides of the longitudinal axis and having the chair height, with each pair of io sockets being at a different height so that the bar chair provides for securing the rod at a selected one of three heights provided by the sockets.

2. The bar chair of claim 1, further including a base with the body being secured to the base and extending upwardly therefrom.

3. The bar chair of claim 1 or 2, wherein the base is generally planar, and 15 the body tapers upwardly from the base.

4. The bar chair of claim 1, 2 or 3, wherein the base has an upper edge providing the sockets, with the sockets open upwardly.

5. The bar chair of any one of claims I to 4, wherein said body has six sides, each side providing a respective one of the sockets. 20

6. The bar chair of any one of claims I to 5, wherein the sockets are equally angularly spaced about said axis.

7. The bar chair of any one of claims I to 6, wherein the sockets are equally radially spaced from said axis.

8. A bar chair substantially as hereinbefore described with reference to the 25 accompanying drawings. Dated 20 July, 2011 The Australian Steel Company (Operations) Pty Ltd Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON