发明申请
- 专利标题： Tape Measure with Variable Preformed Stressed Spiral Spring Retraction System
-
申请号： US17381506申请日： 2021-07-21
-
公开(公告)号： US20210348906A1公开(公告)日： 2021-11-11
- 发明人: Oluwatosin T. Kolade , Shih-Chi Chou
- 申请人： Milwaukee Electric Tool Corporation
- 申请人地址： US WI Brookfield
- 专利权人： Milwaukee Electric Tool Corporation
- 当前专利权人： Milwaukee Electric Tool Corporation
- 当前专利权人地址： US WI Brookfield
- 优先权： CN201710069477.9 20170208
- 主分类号： G01B3/1005
- IPC分类号： G01B3/1005 ; G01B3/1041 ; G01B3/1056
摘要：
A tool, such as a tape measure, including a spring-based retraction system is shown. The spring-based retraction system is driven by a spiral spring, that has a variable preformed stress profile along the length of the spring.
公开/授权文献
信息查询
