发明授权
- 专利标题: Tool handle switch with interlock
- 专利标题(中): 工具手柄开关带互锁
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申请号: US45538374申请日: 1974-03-27
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公开(公告)号: US3882294A公开(公告)日: 1975-05-06
- 发明人: HULTS HAROLD W
- 申请人: CUTLER HAMMER INC
- 专利权人: Cutler Hammer Inc
- 当前专利权人: Cutler Hammer Inc
- 优先权: US45538374 1974-03-27
- 主分类号: H01H9/06
- IPC分类号: H01H9/06 ; H01H9/26 ; H01H13/12 ; H01H21/58 ; H01H5/10 ; H01H13/08
摘要:
A double-pole, reversing switch adapted to be mounted in the handle of a portable electric tool. The switch includes a trigger type pushbutton on-off switch and a slide button reversing switch electrically connectable for reversing shunt or series motors and mounted in a unitary housing, and having an external interlock preventing operation of the slide button while the trigger is depressed. The on-off switch is provided with double-pole butt contacts that have a controlled amount of wipe, very low bounce, are non-teasable, and have maximum contact pressure at the point of tripping open. The trigger has a considerable amount of movement between trip ''''on'''' and trip ''''off'''' positions. The slide button reversing switch is provided with spring biased ''''ball-bearing'''' movable contacts operating with snap-action to engage converging flat surfaces of pairs of stationary contacts.
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