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公开(公告)号：US3992779A
公开(公告)日：1976-11-23
申请号：US578414
申请日：1975-05-19
CPC分类号： B27B17/083 , B27B17/0008 , Y10T74/18864
摘要： A brake for quickly stopping the cutting chain of a chain saw in the event of a kickback or other mishap comprises a narrow band of spring steel which wraps at least 11/4 turns around the drum of the centrifugal clutch by which the chain is driven. One end of the band is anchored while the other end is connected to an operating lever which is rotatable between a released position in which the brake band is released from the drum and an applied position in which the brake band is applied to the drum. The operating lever has a peripheral portion which has an interfering engagement with a cooperating portion on a rotatable actuating lever to which a guard or other sensing member is connected. By reason of this interfering engagement the operating lever remains in one or the other of its positions until forcibly moved to the other position by the guard member operating through the actuating lever. The mechanism can thus be set with the operating lever in released position and tripped by force applied to the guard member to rotate the actuating lever and thereby actuate the operating lever to bring the brake band into engagement with the drum. By reason of its wraparound, the brake band thereupon grips the drum so as to bring the drum and hence the cutting chain to a quick stop. A light spring is provided for biasing the operating lever toward the applied position.
摘要翻译： 在发生反冲或其他事故的情况下，用于快速停止链锯的切割链的制动器包括弹簧钢的窄带，其围绕链条被驱动的离心式离合器的滚筒至少缠绕11/4圈。 带的一端被固定，而另一端连接到操作杆，该操作杆可在从制动带从滚筒释放的释放位置和其中制动带施加到滚筒的施加位置之间旋转。 操作杆具有周边部分，其与可旋转致动杆上的配合部分具有干涉接合，保护器或其它感测部件连接到该可动致动杆上。 由于这种干扰接合，操作杆保持在其位置中的一个或另一个位置，直到由通过致动杆操作的防护构件强制地移动到另一位置。 因此，可以将操作杆设置在释放位置并且通过施加到防护构件的力而跳动的机构来旋转致动杆，从而致动操作杆以使制动带与滚筒接合。 由于其环绕，制动带随后握住鼓，从而使滚筒和切割链快速停止。 提供了一个弹簧，用于将操作杆朝向施加位置偏压。
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公开(公告)号：US4361252A
公开(公告)日：1982-11-30
申请号：US286285
申请日：1981-07-23
摘要： A wiring device with a pivotable and rotatable cover wherein the cover has a seal which is movable relative to the cover. The seal includes a resilient ring or disk carried by a stiff supporting disk loosely retained in the cover. When the cover is closed and rotated to tighten the cover on the device, the seal frictionally engages the mouth of the device and the cover rotates relative to the seal, avoiding damage to the seal.
摘要翻译： 一种具有可枢转和可旋转的盖的接线装置，其中盖具有可相对于盖移动的密封件。 密封件包括由松散地保持在盖中的刚性支撑盘承载的弹性环或盘。 当盖子闭合并旋转以拧紧装置上的盖子时，密封件摩擦地接合装置的口部并且盖子相对于密封件旋转，避免损坏密封件。
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公开(公告)号：US4740176A
公开(公告)日：1988-04-26
申请号：US29945
申请日：1987-03-25
IPC分类号： H01R13/436 , H01R13/52 , H01R13/40
CPC分类号： H01R13/4362 , H01R13/52
摘要： An electrical connector has male and female housing halves each of which has front and rear housing portions. The rear housing portion has an externally threaded front end, a stop shoulder at the rear extent of the threads and a hole to receive a latch pin. The front housing portion has internal threads at the rear end to engage the threads on the rear housing portion and also has an end face with a recess. The latch pin penetrates the rear housing near the stop shoulder and has a nonsymmetrical head. The latch pin can be rotated between a position in which the head protrudes beyond the stop shoulder and a position in which it does not protrude beyond the stop shoulder. When fully threaded together, the recess is aligned with the latch pin which can be rotated to its latching, protruding position to prevent unthreading of the housing portions. The rear housing portion also contains a slidable cup which is elastomerically urged toward the front housing portion when the portions are assembled to maintain internal components in their proper position.
摘要翻译： 电连接器具有阳和阴壳半部，每个半壳具有前和后壳体部分。 后壳体部分具有外螺纹前端，在螺纹的后部范围处的止动肩部和用于接收闩锁销的孔。 前壳体部分在后端处具有内螺纹，以与后壳体部分上的螺纹接合并且还具有带有凹部的端面。 锁销穿过止动肩部附近的后壳体并具有非对称头部。 闩锁销可以在头部突出超过止动肩部的位置与不突出超过止动肩部的位置之间旋转。 当完全螺纹连接在一起时，凹槽与可以旋转到其锁定突出位置的闩锁销对齐，以防止壳体部分的脱开。 后壳体部分还包括可滑动的杯，当组装这些部分以将内部部件保持在适当的位置时，滑动杯被弹性地推向前壳体部分。
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公开(公告)号：US4736999A
公开(公告)日：1988-04-12
申请号：US30055
申请日：1987-03-25
IPC分类号： H01R13/642 , H01R13/645 , H01R13/62
CPC分类号： H01R13/642 , H01R13/6456
摘要： A connector for high current use includes a plug half and a receptacle half. The plug half includes a sleeve which receives a blade holder and a contact holder. The sleeve is provided with notches having predetermined angular positions and widths. The blade and contact holders also include notches which are mated with those of the sleeve. A plurality of sleeves having a variety of notch widths and positions can be provided to define a selection of connectors for various electrical circumstances. Blade and contact holders with a variety of sets of key positions and widths are provided to match the sleeves and to have the necessary electrical characteristics.
摘要翻译： 用于高电流使用的连接器包括插头半部和插座半部。 插头半部包括容纳刀片保持器和触点支架的套筒。 套筒设置有具有预定角度位置和宽度的凹口。 刀片和接触保持器还包括与套筒配合的凹口。 可以提供具有各种切口宽度和位置的多个套筒以限定用于各种电气环境的连接器的选择。 提供具有各种关键位置和宽度的刀片和触点支架，以匹配套筒并具有必要的电气特性。
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公开(公告)号：US4381879A
公开(公告)日：1983-05-03
申请号：US237889
申请日：1981-02-25
IPC分类号： H01R13/447 , H01R13/52 , H01R13/44
CPC分类号： H01R13/447 , H01R13/52
摘要： A weatherproof housing and rotatable cover have radial lugs which are engaged when the cover is closed in a specific position and rotated clockwise. The cover is hingedly attached to the housing by a J-shaped arm and the cover has a skirt, one surface of which faces walls formed on the arm. The skirt has cam and stop surfaces defining a recess which engages a wall on the arm in the specific position, acting as a detent to inhibit rotational movement of the cover when it is open. Limited tilting movement of the cover is permitted by a sinuous spring in the mounting of the cover on the arm. A stop pin on the skirt prevents the cover from being rotated by 180.degree..
摘要翻译： 防水外壳和可旋转盖具有径向凸耳，当盖在特定位置关闭并顺时针旋转时，该凸耳接合。 盖通过J形臂铰接地附接到壳体，并且盖具有裙部，其一个表面面向形成在臂上的壁。 裙部具有凸轮和止动表面，凸轮和止动表面限定了一个凹槽，该凹槽在该特定位置上与该臂上的一个壁相接合，起到止动作用以阻止该盖打开时旋转运动。 通过在臂上安装盖上的弯曲弹簧允许盖的有限的倾斜运动。 裙子上的止动销可防止盖子旋转180度。
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