发明授权
- 专利标题: Handle assembly for manual operation of electric switches
- 专利标题(中): 电动开关的手动组合
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申请号: US93091申请日: 1979-11-09
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公开(公告)号: US4308441A公开(公告)日: 1981-12-29
- 发明人: David M. Evans , Joel A. Ramos
- 申请人: David M. Evans , Joel A. Ramos
- 申请人地址: IL Chicago
- 专利权人: S&C Electric Company
- 当前专利权人: S&C Electric Company
- 当前专利权人地址: IL Chicago
- 主分类号: G05G5/02
- IPC分类号: G05G5/02 ; G05G23/00 ; H01H3/04 ; H01H9/28 ; H01H25/00
摘要:
A manual operating handle assembly for an enclosed switch includes a walled frame which resides within the switch enclosure and rotatably mounts a shaft. A sprocket on the shaft turns therewith to move a chain coupled to another sprocket which operates the switch or a stored-energy operator therefor. A pair of arms keyed to the shaft mounts a handle for longitudinal sliding movement toward the shaft and into the frame, and away from the shaft and out of the frame. Rotation of the handle between extreme rotative locations rotates the arms and the shaft. A contoured surface within the frame interferes with the handle in its extreme rotative locations when it is within the frame to prevent rotation thereof. Only if the handle is first slid out of the frame does it clear the surface for rotation between its extreme rotative locations. When the handle is between its extreme rotative locations, it cannot be slid into the frame due to interference of the contoured surface. The handle may be locked when it is in either extreme rotative location and within the frame, whereat it presents a low profile, is shielded from the elements, and is virtually pryproof and vandal-proof.
公开/授权文献
- USD424636S Stuffed toy 公开/授权日:2000-05-09
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