Riser assembly
OwnerTimothy Hillinventor
Life of this patent
Estimating the term…
Abstract
A riser assembly for construction of riser apertures in concrete floors comprises a frame member with a channel forming a shutter. A joist spanning the riser aperture is connected to the channel with a fixing which can slide axially within the channel when connected to the joist. A method of constructing the riser aperture is also disclosed, permitting the adjustment of the position of the joist by sliding the joist axially along the channel after the riser aperture is formed. Upper and lower walls of the channel converge to form a dovetail, which anchors the channel along its length within the settable material forming the floor around the riser, and also helps to retain the fixing within the channel.
Claims29
A riser assembly for the construction of a riser aperture in a cast floor, the riser assembly comprising:
- a frame member adapted to exclude settable material from the riser aperture, the frame member comprising a channel having an axis and a channel opening, the channel comprising an outer wall connected to upper and lower channel walls wherein the upper and lower channel walls extend between the outer wall and the channel opening;
- a joist adapted to span at least a part of the riser aperture;
- and
- a fixing adapted to connect the joist to the channel, wherein the fixing is adapted to slide axially within the channel when connected to the joist.
A method of constructing a riser aperture in a floor, the method comprising surrounding at least a part of the riser aperture with a frame member adapted to exclude settable material from the riser aperture, the frame member comprising a channel having an axis and a channel opening, the channel comprising an outer wall connected to upper and lower channel walls, wherein the upper and lower channel walls extend between the outer wall and the channel opening;
- connecting a joist across the riser aperture by connecting the joist into the channel opening by at least one fixing, wherein the fixing is slidable within the channel when connected to the joist;
- and
- adjusting the position of the joist by sliding the joist axially along the channel.
Dependencies are inferred from the claim text.