IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0552286
(1983-11-16)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Profile Extrusions Company
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대리인 / 주소 |
Merchant, Gould, Smith, Edell, Welter & Schmidt
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인용정보 |
피인용 횟수 :
59 인용 특허 :
3 |
초록
▼
An extruded, low friction weather seal is disclosed which in transverse cross section consists of a semirigid base member of polypropylene, a tubular sealing member of thermoplastic elastomer, and a thin film of polypropylene or a blend of polypropylene and thermoplastic elastomer capping all or par
An extruded, low friction weather seal is disclosed which in transverse cross section consists of a semirigid base member of polypropylene, a tubular sealing member of thermoplastic elastomer, and a thin film of polypropylene or a blend of polypropylene and thermoplastic elastomer capping all or part of the tubular sealing member. The thermoplastic elastomer enables the tubular sealing member to be resilient and compliant over a wide range of temperatures, including extremely cold conditions, but has a high friction surface which is subject to wear particularly where there is relative sliding movement between the weather seal and surface to be sealed. The polypropylene thin film cap provides a low friction contact surface without adversely affecting the resilience and compliance of the tubular sealing member.
대표청구항
▼
1. A weather seal for windows, doors and the like, comprising: an elongated base member the dimensions and material of which cause it to be at least semirigid; a sealing member carried by the base member and extending over its length, the sealing member being formed from material that is resilie
1. A weather seal for windows, doors and the like, comprising: an elongated base member the dimensions and material of which cause it to be at least semirigid; a sealing member carried by the base member and extending over its length, the sealing member being formed from material that is resilient and compliant over a wide range of outside temperatures and having a predetermined coefficient of friction; and a thin continuous film capping at least a part of the sealing member and extending over its length, the thin film being formed with a substantially uniform thickness from a material having a coefficient of friction which is less than that of the sealing member, and being sufficiently thin to permit resilient and compliant flexure with said sealing member. 2. The weather seal defined by claim 1, wherein the material of said base member is an extrudable polymer. 3. The weather seal defined by claim 2, wherein said extrudable polymer is polyolefin homopolymer or copolymer. 4. The weather seal defined by claim 2, wherein said extrudable polymer is polypropylene. 5. The weather seal defined by claim 1, wherein the sealing member is formed from a thermoplastic elastomer. 6. The weather seal defined by claim 5, wherein the thin film comprises a polyolefin at least in part. 7. The weather seal defined by claim 6, wherein the polyolefin is polypropylene. 8. The weather seal defined by claim 7, wherein the thin film comprises a blend of polyolefin and thermoplastic elastomer. 9. The weather seal defined by claim 7, wherein the thin film comprises a blend of polypropylene and thermoplastic elastomer. 10. The weather seal defined by claim 1, wherein the base member is polypropylene, the sealing member is thermoplastic elastomer, and the thin film is a blend of polypropylene and thermoplastic elastomer. 11. The weather seal defined by claim 1 or 10, wherein the base member, sealing member and thin film comprise an integral single extrusion. 12. The weather seal defined by claim 1, wherein the sealing member comprises a hollow tube. 13. The weather seal defined by claim 12, wherein the thin film totally encapsulates the outer surface of the hollow tube. 14. The weather seal defined by claim 12, wherein the thin film caps approximately one-half of the outer surface of the hollow tube. 15. The weather seal defined by claim 1, wherein the sealing member is of predetermined wall thickness and the thin film has a thickness of about 5%-30% of said predetermined wall thickness. 16. The weather seal defined by claim 1, wherein the thickness of the thin film is on the order of 0.001-0.003 inches. 17. A weather seal for windows, doors and the like, comprising: a base member of extrudable polyolefin homopolymer or copolymer having a laterally projecting leg extending over its length of sufficient rigidity as to permit insertion into a mounting groove; a tubular sealing member carried by the base member and formed from an extrudable thermoplastic elastomer that is resilient and compliant over a wide range of outside temperatures and having a predetermined coefficient of friction; and a thin continuous film formed at least in part of an extrudable polyolefin homopolymer or copolymer having a coefficient of friction which is less that that of the thermoplastic elastomer, the thin film being of substantially uniform thickness but sufficiently thin to permit resilient and compliant flexure with said sealing member; said base member, sealing member and thin film being integrally formed in a single extrusion. 18. The weather seal defined by claim 17, wherein the polyolefin homopolymer or copolymer is polypropylene. 19. The weather seal defined by claim 17, wherein the thin film totally encapsulates the outer surface of the tubular sealing member. 20. The weather seal defined by claim 17, wherein the thin film caps approximately one-half of the outer surface of the tubular sealing member. 21. A weather seal for windows, doors and the like, comprising: an elongated base member the dimensions and material of which cause it to be at least semirigid; a sealing member carried by the base member and extending over its length, the sealing member being formed from material that is resilient and compliant over a wide range of outside temperatures and having a predetermined coefficient of friction; and a thin continuous film coextruded with the ceiling member and capping at least a part thereof, the thin film being formed from a material having a coefficient of friction which is less than that of the sealing member, and being sufficiently thin to permit resilient and compliant flexure with said sealing member.
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