Fastener devices

Abstract

A fastener adapted to be set in a body of concrete to facilitate the later attachment of utilities such as pipes, brackets, ducts and the like. The fastener is adapted to be temporarily secured to formwork prior to a concrete pour and once concrete is cured, the formwork can be readily released from the fastener.

1 . A fastener device for setting in a concrete floor, wall or column, the device having: 
 a) a body having a distal end and a facing end;    b) a bore extending at least partially through the body from the facing end towards or to the distal end, the bore being adapted to receive and support a utilities support means; and    c) attachment means for attaching the device to a formwork prior to a concrete pour such that the facing end of the device is located adjacent to or near a surface of the formwork to which the device is attached.    
   
   
       2 . A fastening device as claimed in  claim 1  wherein the body includes one or more fastening apertures which facilitate fastening of the device to the formwork by nails, screws, clouts or the like.  
   
   
       3 . A fastening device as claimed in  claim 2  wherein the one or more fastening apertures pass through the distal end of the device.  
   
   
       4 . A fastening device as claimed in  claim 3  wherein the fastening apertures open into the bore.  
   
   
       5 . A fastening device as claimed in  claim 1  wherein the body includes a flange at the facing end.  
   
   
       6 . A fastening device as claimed in  claim 5  wherein the flange includes one or more fastening apertures  
   
   
       7 . A fastening device as claimed in  claim 1  wherein the body includes a further flange located away from the facing end.  
   
   
       8 . A fastening device as claimed in  claim 7  wherein the further flange is located at the distal end of the device.  
   
   
       9 . A fastening device as claimed in  claim 1  wherein the body is tapered.  
   
   
       10 . A fastening device as claimed in  claim 9  wherein the body is tapered downwardly in a direction from the distal end to the facing end.  
   
   
       11 . A fastening device as claimed in  claim 1  wherein the fastening means comprises one or more barbs, spikes or projections on the facing end of the device for temporarily securing the body to the formwork.  
   
   
       12 . A fastening device as claimed in  claim 11  wherein the barbs, spikes or projections include a region of reduced thickness or a region of weakness to enable the barbs, spikes or projections to be sheared or otherwise removed from the device when removing the formwork or after removal of the formwork.  
   
   
       13 . A fastening device as claimed in  claim 1  wherein the attachment means comprises a plug or grommet for attaching to the formwork, said plug or grommet being adapted to be received in the bore of the device.  
   
   
       14 . A fastening device as claimed in  claim 13  wherein the attachment means for attaching the plug or grommet to the formwork extends through the plug or grommet, or extends through the plug or grommet and the device.  
   
   
       15 . A fastening device as claimed  claim 1  wherein the bore is a threaded bore.  
   
   
       16 . A method of setting a fastener device as claimed in  claim 1  in a concrete floor, wall or column of a structure, the method comprising the steps of: 
 (a) securing the device to a formwork    (b) pouring concrete, and    (c) stripping the formwork so that direct access is available to the facing end and threaded bore of the device.    
   
   
       17 . A fastening device substantially as hereinbefore described with reference to the accompanying figures.  
   
   
       18 . A method of setting a fastening device substantially as hereinbefore described with reference to the accompanying drawings.  
     he film-forming gas to the object cleared of organic substances to form a thin film on the object.