Claims
- 1. An endless power transmission belt structure comprising a thermoplastic polyester elastomer having an oriented crystalline structure about substantially its entire endless path, said crystalline structure being oriented only along said endless path.
- 2. A belt structure as set forth in claim 1 and defined as a load-carrying section of an endless power transmission belt and further comprising a tension section and a compression section bonded on opposite sides of said load-carrying section.
- 3. A belt structure as set forth in claim 1 defined as an entire power transmission belt.
- 4. An endless power transmission belt structure consisting of a thermoplastic polyester elastomer having an elongated oriented crystalline structure about substantially its entire endless path, said endless path having a length several times its original length prior to elongation, said crystalline structure being oriented only along said endless path.
- 5. A belt structure as set forth in claim 4 in which said endless path has a length which ranges between 2 and 7 times its original length.
- 6. A belt structure as set forth in claim 4 having a tensile strength generally of the order of ten times the tensile strength of said member due to said oriented crystalline structure.
- 7. A belt structure as set forth in claim 4 defined as an entire power transmission belt.
- 8. A belt structure as set fort in claim 4 defined as a load-carrying section of an endless power transmission belt and further comprising a tension section and a compression section bonded on opposite sides of said load-carrying section.
- 9. A belt structure as set forth in claim 8 in which said tension and compression sections comprise rubber compounds and further comprising adhesive means bonding said tension and compression sections on opposite sides of said load-carrying section.
- 10. A belt structure as set forth in claim 9 in which said adhesive means is in the form of an isocyanate adhesive.
- 11. A belt structure as set forth in claim 4 in which said oriented crystalline structure is completely free of fused areas.
RELATED APPLICATION
This application is a continuation-in-part of U.S. application Ser. No. 490,828, filed July 22, 1974, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3416383 |
Jensen et al. |
Dec 1968 |
|
3930417 |
Ballou |
Jan 1976 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,171,685 |
Nov 1969 |
UK |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
490828 |
Jul 1974 |
|