发明授权
- 专利标题: Heavy duty ratchet
- 专利标题(中): 重型棘轮
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申请号: US13869469申请日: 2013-04-24
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公开(公告)号: US09254989B2公开(公告)日: 2016-02-09
- 发明人: Kenneth G. Kingery
- 申请人: Kenneth G. Kingery
- 代理机构: The von Hellens Law Firm, Ltd.
- 主分类号: B21F9/00
- IPC分类号: B21F9/00 ; B66F3/00 ; B66D3/08 ; B66D5/32 ; B66D3/10
摘要:
A ratchet includes a spool rotatably disposed within a housing and supporting a cord having opposed cord sections extending from the housing. Tension to one cord section is initially applied by pulling on the other cord section. To increase the tension, a tool is engaged with the spool to apply a further force to increase the tension on the one cord section. In another embodiment, a cord enters the housing and into the center of a hollow shaft supporting a spool and drawn through the hollow shaft to establish an initial degree of tension on the section of the cord entering the housing. A lever cooperating with the spool turns the spool to wrap the cord about the spool and increase the tension on the cord. In a third embodiment, a cord enters a housing and extends about a spool supported within the housing and thereafter exits the housing. A pivotable lever incrementally rotates the spool to increase the tension on the cord entering the housing. To further increase the tension on the spool, a wrench or the like may engage the shaft supporting the spool in any of the ratchets described.
公开/授权文献
- US20130277630A1 HEAVY DUTY RATCHET 公开/授权日:2013-10-24
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