Invention Grant
- Patent Title: Bias assembly for ratchet tools
- Patent Title (中): 棘轮工具偏压组件
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Application No.: US11784166Application Date: 2007-04-05
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Publication No.: US07987747B2Publication Date: 2011-08-02
- Inventor: David T. Ross , Steven R. Wente
- Applicant: David T. Ross , Steven R. Wente
- Applicant Address: US WI Kenosha
- Assignee: Snap-On Incorporated
- Current Assignee: Snap-On Incorporated
- Current Assignee Address: US WI Kenosha
- Agency: Seyfarth Shaw LLP
- Main IPC: B25B13/46
- IPC: B25B13/46

Abstract:
A ratcheting tool such as a reversible dual-pawl ratchet wrench is disclosed that minimizes wasted motion during ratchet slip or counter-rotation. The ratchet wrench includes a bias assembly that biases the pawls apart to bias a first, selected pawl for a selected drive direction towards engagement with a ratchet gear, and that the biases the selected pawl into a concentric alignment with the ratchet gear. In this manner, non-ratcheting initial rotation of the pawl due to counter-rotation prior to the pawl camming out of engagement with the ratchet gear is eliminated, thus eliminating wasted motion and maximizing the available angular sweep for the wrench.
Public/Granted literature
- US20080245194A1 Bias assembly for ratchet tools Public/Granted day:2008-10-09
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