Ring seal collar for air ducts
AssigneeCrown Products, LLC
InventorWilliam P. Tuggler, Jr.
Life of this patent
Estimating the term…
Abstract
Ring collar for use in connecting a side branch line to a main header air duct, the ring collar having a tubular sheet metal body with an inlet, an outlet end which is tapered for easy insertion into a tubular member, and a U-shaped channel ring around the body with the open side of the channel facing the outlet end of the body; and a process for connecting the ring collar to the main header.
Claims13
A ring seal collar for air ducts which comprises a thin walled tubular conduit body having circumferentially uninterrupted inlet end and an outlet end, an L-shaped channel ring having a bottom leg and an outer leg extending substantially parallel to said conduit body, said bottom leg being rigidly affixed to and around the outside of said conduit intermediate said ends with said bottom leg of said channel ring being adjacent said inlet end and the open side of said channel being adjacent said outlet end, said bottom leg having a plurality of spaced holes through which fasteners may be inserted for attachment to a main header of a conditioned air distribution system.
A method for attaching an insulated side branch conduit to a main header of heating and air conditioning distribution system, which comprises the steps of:
- (a) cutting a hole in a wall of a main header to receive the side branch conduit;
- (b) inserting into the hole the inlet end of a ring seal collar having a thin walled tubular conduit body with circumferentially uninterrupted inlet end and an outlet end and being rigidly affixed to and around the outside of the conduit, a channel ring having an L-shaped cross section with a bottom leg and an outer leg forming a closed side and the outer leg and conduit forming an open side of the channel formed between the conduit and ring, the bottom leg being rigidly afixed to the conduit and the closed side facing the inlet end, the bottom leg having a plurality of spaced holes therethrough;
- (c) inserting and tightening screws in the holes of the outer leg and into the wall of a main header to clamp the channel ring tightly against the header wall;
- (d) placing over the outlet end a length of tubular insulation having an inner core layer and an outer cover layer with an insulation layer sandwiched therebetween;
- (e) peeling back the cover layer and the insulation layer and fastening the inner core layer around the tubular conduit body by tightening a first keeper belt therearound;
- (f) inserting the insulation layer into the channel ring to fill the ring completely with the insulation layer;
- and
- (g) placing the cover layer around the outside leg of the channel ring and fastening it to the channel ring by tightening a second keeper belt therearound.
Dependencies are inferred from the claim text.