Invention Grant
- Patent Title: Tape measure with variable preformed stressed spiral spring retraction system
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Application No.: US15890987Application Date: 2018-02-07
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Publication No.: US11092418B2Publication Date: 2021-08-17
- Inventor: Oluwatosin T. Kolade , Shih-Chi Chou
- Applicant: Milwaukee Electric Tool Corporation
- Applicant Address: US WI Brookfield
- Assignee: Milwaukee Electric Tool Corporation
- Current Assignee: Milwaukee Electric Tool Corporation
- Current Assignee Address: US WI Brookfield
- Agency: Reinhart Boerner Van Deuren s.c.
- Priority: CN201710069477.9 20170208
- Main IPC: G01B3/1005
- IPC: G01B3/1005 ; G01B3/1041 ; G01B3/1056
Abstract:
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.
Public/Granted literature
- US20180224263A1 Tape Measure with Variable Preformed Stressed Spiral Spring Retraction System Public/Granted day:2018-08-09
Information query
