Corner and junction assemblies for service provision ducting and components therefor

Abstract

In order to provide designs of corner and junction assemblies for service provision ducting which are simple to construct and do not require a large number of components, there is provided an internal angle cover part 22, 28, 31 , an external angle cover part 21 and a straight wall cover part 36 . These can be combined together to form a flat bend (FIG. 4 ), a cross-over (FIG. 5 ) or a flat T (FIG. 6 ). Each cover part comprises a cover surface 22, 23, 28, 35 which extends up to, but no further than the centre line of the respective section of service provision ducting.

1 . A corner or junction assembly comprising at least two sections of service provision ducting meeting at an angle, each section comprising a longitudinally extending floor member and at least one longitudinally extending wall member projecting from the floor member, the floor members of the sections of service provision ducting being substantially coplanar, and adjacent sections of service provision ducting defining between them an angle, a cover part being providing extending from each angle up to, but no further than, the centre line of the respective sections of service provision ducting.  
     
     
         2 . A method of assembling a corner or junction assembly for service provision ducting, comprising placing at least two sections of service provision ducting at an angle to one another, each section comprising a longitudinally extending floor member and at least one longitudinally extending wall member projecting from the floor member, the floor members of the sections of service provision ducting being substantially coplanar and adjacent sections of service provision ducting defining between an angle, the method further including the step of inserting a cover part which extends from each angle up to but no further than the centre line of the respective sections of service provision ducting.  
     
     
         3 . A corner or junction assembly according to  claim 1 , being a flat T, flat bend or flat crossover.  
     
     
         4 . A corner or junction assembly according to  claim 1 , wherein the sections of service provision ducting meet substantially at a right angle.  
     
     
         5 . A corner or junction assembly according to  claim 1 , comprising at least an internal angle cover part, comprising a corner surface and a cover surface extending from the corner surface.  
     
     
         6 . A corner or junction assembly according to  claim 1 , a corner piece being provided extending between two sections of service provision ducting, the corner piece comprising a surface having a first end lying on the wall member of the first section of service provision ducting and a second end lying on a wall member of the second section of service provision ducting, and a curved section of radius not less than a value in the range 25-75 mm joining the first and second ends of the corner piece.  
     
     
         7 . A component for a corner or junction assembly as defined in  claim 1 , the component comprising a corner surface and a cover surface extending from the corner surface, whereby in use, the corner surface is located in the angle between two adjacent sections of service provision ducting and the cover section extends from the angle up to but no further than the centre line of the respective sections of service provision ducting.  
     
     
         8 . A kit of parts for forming a corner or junction assembly according to  claim 1 , comprising at least four internal angle cover parts, at least one external angle cover part and at least one straight wall cover part, whereby selected ones of the cover parts may be assembled selectively to form a flat bend, flat T or flat crossover.