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公开(公告)号：US4107488A
公开(公告)日：1978-08-15
申请号：US746833
申请日：1976-12-02
摘要： An electric switch mounted within an enclosure having a hinged cover is manually operated from outside the enclosure by a handle mechanism secured to the enclosure. The cover is provided with a single aperture near the edge thereof remote from the cover hinges, with this aperture providing clearance for the operating handle of the mechanism when the cover is closed and also providing clearance for a catch which holds the cover closed. The mechanism also includes a defeatable cover interlock to prevent opening of the cover when the switch is closed, and a defeatable switch interlock to prevent closing of the switch when the cover is open.
摘要翻译： 安装在具有铰接盖的外壳内的电开关通过固定到外壳的手柄机构从外壳的外部手动操作。 该盖在远离盖铰链的边缘附近设置有单个孔，当盖封闭时，该孔为机构的操作手柄提供间隙，并且还为保持盖封闭的卡扣提供间隙。 该机构还包括一个可击倒的盖互锁，以防止开关关闭时盖的打开，以及一个可击倒的开关互锁，以防止盖盖打开时关闭开关。
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公开(公告)号：US4038626A
公开(公告)日：1977-07-26
申请号：US585774
申请日：1975-06-11
摘要： Contactors and housings therefor wherein the contactor is provided with blow-out coils brought into circuit by the arc; arc extinguishers; and fuses in series with the contacts; a closing and holding magnet for operating the contacts; anti-single-phasing operation to open the contacts in response to overload interruption by a fuse; the housings being of modular arrangement to form a uniform control center and being provided with racking means for inserting and removing the contactors with the door closed; and means for protecting the operator including the closing off of access to at least the line bus when the contactor is racked out and disabling the racking mechanism when the contactor contacts are closed.
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