Temporary duct cover

• US 20030220071A1
• Filed: 05/14/2003
• Published: 11/27/2003
• Est. Priority Date: 05/17/2002
• Status: Active Grant

• Current Assignee: Ductcap Products Incorporated
• Original Assignee: Ductcap Products Incorporated
• Inventors: Vossen, Steve
• Granted Patent: US 6,874,541 B2
• Time in Patent Office: Days
• US Class Current: 454/370
• CPC Class Codes: F24F 13/02 Ducting arrangements
• CPC Class Codes: F24F 13/20 Casings or covers

Abstract

A duct cover for installation on a duct having a known sectional area defined by the duct exterior margin, includes a cover envelop having a body, the body having an open end and an opposed closed end with a center portion extending between the open end and the closed end to define an envelop enclosure, the body being substantially impermeable relative to airborne particulate and moisture, and an elastic member being operably coupled to the body open end and having a relaxed disposition and an expanded disposition, the expanded disposition defining an opening that is area that is greater than the duct sectional area, the elastic member being contractable from the expanded disposition to a duct conforming disposition in compressive sealing engagement with the duct exterior margin. A method of installing a duct cover on a duct is further included.

Claims

1. A duct cover for installation on a duct having a known sectional area defined by the duct exterior margin, comprising:

a cover envelop having a body, the body having an open end and an opposed closed end with a center portion extending between the open end and the closed end to define an envelop enclosure, the body being substantially impermeable relative to airborne particulate and moisture; and

an elastic member being operably coupled to the body open end and having a relaxed disposition and an expanded disposition, the expanded disposition defining an opening that is area that is greater than the duct sectional area, the elastic member being contractable from the expanded disposition to a duct conforming disposition in compressive sealing engagement with the duct exterior margin.

2. The duct cover of claim 1, the body having a length dimension measured from the open end to the closed end and the open end having a diameter when the open end is disposed in a substantially circular disposition, the length dimension being substantially greater than the diameter.

3. The duct cover of claim 2, the body length dimension being between one and five times the diameter.

4. The duct cover of claim 1, the body center portion defining an interior area, the interior area being greater than the known sectional area defined by the duct exterior margin.

5. The duct cover of claim 1, the body center portion being substantially tubular shaped.

6. The duct cover of claim 1, the cover envelop being formed of a flexible poly plastic material.

7. A method of installing a duct cover for on a duct having an opening and a known sectional area defined by the duct exterior margin, comprising:

stretching a closed elastic member to define an interior area that is greater than the known sectional area defined by the duct exterior margin;

sliding the duct cover over the duct opening and the duct exterior margin; and

releasing the closed elastic member to contract into a conforming, sealing, compressive engagement with the duct exterior margin.

8. The method of claim 7, including forming a cover envelop having a body, the body having an open end and an opposed closed end with a center portion extending between the open end and the closed end to define an envelop enclosure and forming the body substantially impermeable relative to airborne particulate and moisture;

and

operably coupling an elastic member to the body open end, the elastic member having a relaxed disposition and an expanded disposition, defining an opening that is area that is greater than the duct sectional area when in the expanded disposition, and defining a duct conforming disposition in compressive sealing engagement with the duct exterior margin when the elastic member is contracted from the expanded disposition.

9. The method of claim 8, the body having a length dimension measured from the open end to the closed end and the open end having a diameter when the open end is disposed in a substantially circular disposition, the length dimension being substantially greater than the diameter.

10. The method of claim 9, including forming the body length dimension being between one and five times the diameter.

11. The method of claim 7, including defining a body center portion interior area, the interior area being greater than the known sectional area defined by the duct exterior margin.

12. The method of claim 7, including forming the body center portion in a substantially tubular shape.

13. The method of claim 7, including forming the cover envelop of a flexible poly plastic material.