Claims
- 1. A covering for an architectural opening comprising in combination:
covering means for selectively covering and uncovering the architectural opening by extension and retraction of said covering means; and an operating mechanism mounted adjacent to said architectural opening and being operatively associated with said covering means, said mechanism including a control cord and operative elements frictionally engaged with said control cord, said control cord being made from yarn having a tensile strength in the range of 28-35 grams/denier and a denier in the range of 275-375.
- 2. The covering of claim 1 wherein said yarn is made of polyethylene.
- 3. The covering of claim 1 or 2 wherein said cord is made from said yarn that is braided.
- 4. The covering of claim 3 wherein said yarn is wound on bobbins under a tension of 115-140 grams prior to being braided into said cord.
- 5. The covering of claim 3 or 4 wherein said braided cord is placed under tension of 150-200 grams and coated with urethane prior to being incorporated into said operating mechanism.
- 6. The covering of claim 5 wherein said braided cord is coated with a mixture of urethane and water, then dried and cured prior to being incorporated into said operating mechanism.
- 7. The covering of claim 6 wherein said urethane is a polyester, polyether urethane.
- 8. The covering of claim 5, wherein said urethane is a polyester, polyether urethane.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser. No. 09/655,991, filed Sep. 6, 2000, pending. Application '991 is hereby incorporated by reference as though fully disclosed herein.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60152824 |
Sep 1999 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09655991 |
Sep 2000 |
US |
Child |
10113687 |
Mar 2002 |
US |