Invention Grant
- Patent Title: Tape measure with fluid-based retraction speed controller
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Application No.: US15928954Application Date: 2018-03-22
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Publication No.: US11022417B2Publication Date: 2021-06-01
- Inventor: Scott Earl McKinster
- 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.
- Main IPC: G01B3/1005
- IPC: G01B3/1005 ; G01B3/102 ; G01B3/1041 ; G01B3/1003 ; G01B3/1043

Abstract:
A tool, such as a tape measure, including a spring-based retraction system is shown. The tape measure includes a fluid-based retraction speed controller. The speed controller may be formed from a rotor/stator arrangement. The rotor is coupled to the reel and the stator is coupled to the housing opposing the rotor. The rotor converts some rotational energy from tape reel into movement of a fluid (e.g., movement of air, movement of oil, etc. through friction) which acts to slow or limit the retraction/rotational speed of the reel as the retraction spring expands driving the reel during tape blade retraction.
Public/Granted literature
- US20180274894A1 Tape Measure with Fluid-Based Retraction Speed Controller Public/Granted day:2018-09-27
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