Composite sill assembly

• US 4,079,550 A
• Filed: 01/17/1977
• Issued: 03/21/1978
• Est. Priority Date: 01/17/1977
• Status: Expired due to Term

• Current Assignee: Pease Company
• Original Assignee: Pease Company
• Inventors: Bursk, William M., Pease, David H. Jr.
• Primary Examiner(s): Kannan, Philip C.
• Application Number:
  US05/759,666
• Time in Patent Office: 428 Days
• Field of Search: 49/467, 49/468, 49/469, 49/470, 49/471, 428/344, 428/354, 428/906, 428/420, 52/179, 52/188
• US Class Current: 49/467
• CPC Class Codes: E06B 1/70 Sills; Thresholds
• CPC Class Codes: E06B 2001/707 Thresholds with special provision for insulation
• CPC Class Codes: Y10T 428/2804 Next to metal
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

A composite sill assembly including a core covered by an extruded section of aluminum cladding and a cover plate of brass fastened to the outer surface of the cladding to improve the appearance of the assembly without appreciably increasing its cost. Opposing surfaces of the cover plate and cladding are isolated from each other to prevent corrosion through galvanic action and this may be accomplished by adhering the cover plate to the cladding with a double faced adhesive tape of foamed neoprene or other suitable material. In this construction the tape therefore serves the dual function of both securing the plate to the cladding and isolating the two members from each other to prevent galvanic reaction and corrosion.

Claims

1. A composite sill assembly comprising:

an extruded metal cladding including an outer tread portion terminating in a reversely extending section and partially defining a hollow, core-receiving portion,

a core member positioned within said hollow, core-receiving portion of said metal cladding in supporting relationship thereto,

a metal cover plate formed of a metal different from the metal of said cladding and positioned in overlying relationship to said outer tread portion of said cladding, and

means permanently securing said cover plate to said cladding with opposed surfaces of said cover plate and cladding in spaced relationship to each other, isolating said cladding from said metal cover plate and preventing galvanic action therebetween.

2. The assembly of claim 1 wherein:

said securing means comprises a double-faced adhesive tape interposed between opposing surfaces of said cladding and said cover plate and preventing contact therebetween.

3. The assembly of claim 1 wherein:

said cladding consists of an aluminum extrusion.

4. The assembly of claim 1 wherein:

said cover plate consists of an embossed brass stamping.

5. The assembly of claim 1 wherein:

said core is formed of a synthetic resinous material.

6. The assembly of claim 1 further comprising:

mechanical fasteners extending between said cladding and said cover plate.

7. A composite sill assembly comprising:

an extruded aluminum cladding including an outer, sloped tread portion and a reversely extending section defining with said sloped tread portion a hollow, core-receiving portion of said threshold assembly,

a molded synthetic resinous core secured within said hollow, core-receiving portion of said metal cladding in supporting relationship thereto,

a coined brass cover plate with an embossed outer surface positioned in overlying relationship to said outer tread portion of said cladding, and

a foamed neoprene tape having adhesive on opposite faces thereof, interposed between and securing said cover plate to said cladding, maintaining opposing surfaces thereof out of contact with each other and preventing galvanic corrosion thereof.