Trap fitting assembly
OwnerKenneth R. Cornwallinventor
Life of this patent
Estimating the term…
Abstract
An improved trap fitting assembly (F.sub.1, F.sub.2) which prevents the spread of fire and smoke through a floor (100,200) of a building is described. The fitting uses a flammable coupling (10, 30) and a non-flammable sleeve (14, 32) inside the coupling with an extension (14b; 32b) from a lower most portion of the floor which is connected to a non-flammable J-pipe (16, 34). In use the J-pipe contains water (101, 201) at a level (L-L) prevents the fire and smoke from going through the floor. The trap fitting is preferably adapted for a floor drain outlet (11) or tub (203).
Claims18
An improved trap fitting assembly which prevents the spread of fire and smoke through a floor of a building through the fitting assembly which comprises:
- (a) a flammable tubuler coupling means having opposed ends which provides an opening along a longitudinal axis through the floor with an outside wall secured to the floor and an inside wall which defines the opening;
- (b) a non-flammable, thin sleeve means with openings at opposed ends mounted on the inside of the coupling means along the axis between an upper and a lower plane of the floor and with an extension below the lower plane of the floor with a thickness between inner and outer walls of the sleeve means less than the thickness between the walls of the coupling means, wherein the sleeve means has an enlarged ring above an elongate cylindrical portion on an outside wall around the longitudinal axis of the coupling means and wherein a thin flammable spacer tube means is mounted on the inside wall of the coupling means and on the elongate cylindrical portion of the sleeve means to hold the sleeve means in the coupling means by engagement with the enlarged ring;
- and
- (c) a non-flammable J-pipe means removable secured to the extension at a lower most of the openings of the sleeve means by a connection means, wherein in use the J-pipe means is filled with water in a lower portion of the J-pipe means thereby preventing smoke and fire from below the floor from moving up through the coupling means and sleeve means to above the floor.
A building construction which prevents the spread of fires and smoke through a floor of the building which comprises:
- (a) an improved trap fitting assembly which prevents the spread of fire and smoke through a floor of a building through the fitting assembly which comprises:
- a flammable tubular coupling means having opposed ends which provides an opening along a longitudinal axis through the floor with an outside wall secured to the floor and an inside wall which defines the opening;
- a non-flammable, thin sleeve means with openings at opposed ends mounted on the inside of the coupling means along the axis between an upper and a lower plane of the floor and with an extension below the lower plane of the floor and with a thickness between inner and outer walls of the sleeve means of less than a thickness between the walls of the coupling means, wherein the sleeve means has an enlarged ring above an elongate cylindrical portion on an outside wall around the longitudinal axis of the coupling means and wherein a thin flammable spacer tube means is mounted on the inside wall of the coupling means and on the elongate cylindrical portion of the sleeve means to hold the sleeve means in the coupling means by engagement with the enlarged ring;
- and a non-flammable J-pipe means removably secured to the extension at a lower most of the openings of the sleeve means by a connection means wherein in use the J-pipe means is filled with water in a lower portion of the J-pipe means thereby preventing smoke and fire from below the floor from moving up through the coupling means and sleeve means to above the floor;
- (b) a floor mounting the coupling means of the fitting through the floor;
- and
- (c) a drain pipe connected to the J-pipe means to convey the water overflowing from the J-pipe means through the building.
Dependencies are inferred from the claim text.