| 发明名称 | Belt tensioning device with variable spring factor | ||
| 摘要 | A tensioning system including a base and an arm pivotally coupled to the base, the arm having an engagement surface thereon. The system further includes a biasing mechanism operatively coupled to the arm to bias the arm relative to the base. The biasing mechanism includes a coil spring having a plurality of coils, at least some of the coils or parts thereof being configured to switch between an activated state and deactivated state based upon a position of the arm relative to the base. | ||
| 申请公布号 | US8932163(B2) | 申请公布日期 | 2015.01.13 |
| 申请号 | US201213400447 | 申请日期 | 2012.02.20 |
| 申请人 | Dayco IP Holdings, LLC | 发明人 | Fittro Zachary Lee;Serage Carter Ray;Bednar, Jr. David Mathias |
| 分类号 | F16H7/12 | 主分类号 | F16H7/12 |
| 代理机构 | Thompson Hine L.L.P. | 代理人 | Thompson Hine L.L.P. |
| 主权项 | 1. A tensioning system comprising: a base; an arm pivotally coupled to said base, said arm having an engagement surface thereon; and a biasing mechanism operatively coupled to said arm to bias said arm relative to said base, wherein said biasing mechanism includes a coil spring having a plurality of coils, at least some of said coils or parts thereof being configured to switch between an activated state and deactivated state based upon a position of said arm relative to said base; wherein said deactivated state is a state in which said coil or part thereof does not act as a spring or biasing device and wherein said activated state is a state in which said coil or part thereof acts as a spring or biasing device. | ||
| 地址 | Springfield MO US | ||