Channel screed

• US 8,683,766 B2
• Filed: 08/01/2012
• Issued: 04/01/2014
• Est. Priority Date: 08/01/2012
• Status: Active Grant

• Current Assignee: Robert B. Rutherford
• Original Assignee: Robert B. Rutherford
• Inventors: Rutherford, Robert B.
• Primary Examiner(s): WENDELL, MARK R
• Application Number:
  US13/564,626
• Publication Number:
  US 20140033629A1
• Time in Patent Office: 608 Days
• Field of Search: 523/64, 523/71, 523/72, 523/67, 523/75
• US Class Current: 52/375
• CPC Class Codes: E04B 1/64 for making damp-proof; Protection against corrosion sealings E04B1/66
• CPC Class Codes: E04B 2/00 Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls connections for building structures in general E04B1/38; insulation for buildings in general E04B1/62; building elements of relatively thin form for parts of buildings E04C2/00
• CPC Class Codes: E04B 2/02 built-up from layers of building elements
• CPC Class Codes: E04F 13/06 Edge-protecting borders borders for joints between plaster layers and window or door frames or like E06B1/62
• CPC Class Codes: E04F 15/142 Dividing strips or boundary strips
• CPC Class Codes: E04F 2013/066 for expansion joints between two plaster layers

Abstract

A channel screed comprises a first member having an internal channel defined by opposed walls extending from a base. The first member includes ribs within the internal channel that accommodate placement of a second member thereon. The first member having surface features that cooperate with surface features of the second member to provide an attachment therebetween. The first member includes fins projecting outwardly from the opposed walls to provide both an indication of building material thickness, and a mechanical attachment therewith. The second member covers the first member internal channel to provide a desired aesthetic appearance to the installed channel screed. The second member comprises a base with opposed walls, and includes flanges projecting from top edges of the opposed wall surfaces. When attached to the first member, the flanges cover up the internal channel, and the interface between the first member and the building material.

Claims

1. A channel screed for use within a surface of a structure, the channel screed comprising:

a first member comprising an internal channel defined by opposed walls extending from a base, a bottom slot, and a pair of opposing side slots, wherein the base is attachable to an underlying element of the structure, and wherein a building material, used to form the surface of the structure, extends along outside surfaces of the opposed walls;

a second member that is connected with the first member to at least partially cover the internal channel; and

,

a three part connector comprising an end cap, and two side dams, the end cap capable of being inserted within said bottom slot, and said two side dams capable of being inserted within said pair of opposing side slots, thereby preventing building material from entering the internal channel.

2. The channel screed of claim 1 wherein the first member walls include a surface feature that cooperates with the second member to provide a locking connection therebetween.

3. The channel screed of claim 2 wherein the second member includes opposed walls and the opposed walls have a surface feature projecting therefrom that cooperates with the surface feature of the first member.

4. The channel screed of claim 1 wherein the second member includes opposed walls and a base substantially perpendicular to the opposed walls, and wherein the base of the second member is substantially the same width as the base of the first member, whereby insertion of the second member within the first member encloses the internal channel of the first member between the base of the first member and the base of the second member.

5. The channel screed of claim 1 wherein the second member comprises an internal channel that fits inside of the internal channel of the first member.

6. The channel screed of claim 5 wherein the second member comprises opposed walls that fit within the opposed walls of the first member, and wherein the second member includes a flange extending outwardly from a top edge of each wall, the flanges extending over respective top edge surfaces of the first member walls.

7. The channel screed of claim 6 wherein the flanges are capable of breaking at a predetermined distance from the first member at a breakpoint, wherein the breakpoint is a microgroove at the juncture between the flanges and the side walls of the second member.

8. The channel screed as recited in claim 1 wherein the second member is locked together with the first member.

9. The channel screed of claim 8 wherein the first member walls include two surface features in the form of ridges and ribs extending longitudinally along the wall surface projecting into the internal channel, wherein the ridges are positioned adjacent a top edge surface of the walls, and wherein the ribs are positioned parallel to the base.

10. The channel screed of claim 9 wherein the ribs further comprise a water resistive layer, thereby providing a water-tight seal between the first member and the second member.

11. The channel screed of claim 9, further comprising a water resistive layer adjacent the base of the first member thereby providing a water-tight seal preventing moisture from traversing the base if holes exist in the base.

12. A wall system comprising a channel screed disposed within a wall surface, wherein the channel screed comprises:

an elongate channel member having an internal channel defined by a base and opposed walls, wherein the base is attached to an underlying wall structure, and wherein a building material, used to form the wall surface, is in contact with outside surfaces of the opposed walls; and

an elongate reveal member attached to the first elongate member, wherein the reveal member is disposed within the first member internal channel, and is attached to the first member by surface features in both the channel member and reveal member that cooperate with one another;

a three part connector disposed within the elongate channel, wherein the three part connector comprises an end cap, and two side dams, thereby preventing building material from entering the elongate channel.

13. The wall system of claim 12 wherein the channel member includes one or more surface features extending therefrom that project into the building material used to form the wall surface.

14. The wall system of claim 12 wherein the reveal member is attached to the channel member by a snap connection provided by cooperation of the reveal member and channel member surface features.

15. The wall system of claim 12 wherein the elongate channel member and the elongate reveal member are disposed within a J-stop.

16. A method for using a channel screed within a wall surface comprising the steps of:

installing a first screed member onto a structural surface, the first screed member comprising a base and opposed side walls extending upwardly from the base, the walls and base together defining a first member internal channel;

applying a building material for forming the wall surface, wherein the building material is disposed around the first screed member and is in contact with an outside surface of the first member walls;

installing a second screed member onto the first member, wherein the second member covers at least a portion of the internal channel, and is held in contact with the first member by cooperating surface features of the first and second screed members; and

installing a three part connector disposed within the channel screed, wherein the three part connector comprises an end cap, and two side dams.

17. The method of claim 16 wherein the first member includes one or more fins extending outwardly from one or more of the walls, and wherein the one or more fins are disposed within the building material to form a mechanical connection therewith.

18. The method of claim 16 wherein the second member includes an inner channel formed by a base and opposed walls, and wherein the second member inner channel is disposed within the first member inner channel.