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1. 发明授权

US4752671A Electric immersion heating elements and controls therefor 失效
标题翻译：电浸式加热元件及其控制装置
公开(公告)号：US4752671A
公开(公告)日：1988-06-21
申请号：US865714
申请日：1986-05-22
申请人： Terrence J. C. Foster , Keith Fletcher
发明人： Terrence J. C. Foster , Keith Fletcher
IPC分类号： A47J27/21 , H01H37/00 , H01H37/54 , H05B3/82 , H05B1/02
CPC分类号： H05B3/82 , A47J27/21108 , H01H37/002 , H01H37/5409 , H01H37/54
摘要： An element protector unit for an electrically heated water boiling vessel comprises primary and secondary bimetals responsive to the element head temperature and each arranged for actuating a respective one of primary and secondary switching contacts connected in the line and neutral sides of the element supply via respective push rods. The secondary bimetal and associated switch contacts provide back-up protection in the event of failure of the primary protection on account for example of welding of the primary switch contacts. The primary and secondary bimetals are partially overlapped in the element protector unit for correspondingly reducing the combined area they present to the element head, and the element head plate is provided with a double-dimple formation having a first portion adapted to nest with one of the two overlapped bimetals and a second portion adapted to nest with the other bimetal. By virtue of the overlapping of the bimetals and their nesting with the double-dimple formation in the element head a compact arrangement can be achieved conforming to current trend towards a compact element and element head design.
摘要翻译：用于电加热水沸腾容器的元件保护器单元包括响应于元件头温度的初级和次级双金属片，并且每个双金属片被布置成用于致动通过相应的推动件连接在元件供给线的线和中性侧的主开关触头和次开关触头杆次级双金属和相关的开关触点在主开关触点焊接例如主保护失效的情况下提供备用保护。主元件和次级双金属片在元件保护器单元中部分地重叠，以便相应地减小它们存在于元件头部的组合面积，并且元件头板设置有双凹坑形状，其具有适于与其中一个两个重叠的双金属片和适于与其它双金属片嵌套的第二部分。由于双金属片及其嵌套与元件头中的双凹窝形状的重叠，可以实现紧凑的布置，以符合当前朝向紧凑的元件和元件头部设计的趋势。

2. 发明授权

US06547615B1 Flotation device 失效
标题翻译：浮选装置
公开(公告)号：US06547615B1
公开(公告)日：2003-04-15
申请号：US10129055
申请日：2002-04-30
申请人： Adrian Keith Fletcher
发明人： Adrian Keith Fletcher
IPC分类号： B63C928
CPC分类号： B63C9/26 , B63C9/082
摘要： A flotation device 10 for veering out a lifeline 11 from a moving vessel has parallel keels 13 projecting from opposite sides of its base 14 so that the device will continue to veer laterally of the vessel whichever way up it lies in the water. The point of attachment 12 of the lifeline is on the bisector A of an outwardly-opening angle between keels 13 and 15 on opposite sides of the base 14 and lies at the intersection of lines B and C which are perpendicular to the keels 13 and intersect their planes at points D and E a quarter of the length of the respective keel 13 and 15 from its leading end. In other embodiments there is only one keel on each side of the base, or the base is virtually dispensed with, the point of attachment lying in a corner between upper and lower keels.
摘要翻译：用于从移动容器转出救生索11的浮选装置10具有从其底部14的相对侧突出的平行的龙骨13，使得装置将继续沿着容器的侧面向外偏转，无论其位于水中。生命线的连接点12位于基座14的相对侧上的龙骨13和15之间的向外开口角度的平分线A上，并且位于与龙骨13垂直的线B和C的相交处，并且相交它们的平面在距离其前端的相应龙骨13和15的长度的四分之一处的点D和E处。在其他实施例中，在基座的每一侧上仅有一个龙骨，或者基本上被分配，附接点位于上龙骨和下龙骨之间的角落中。

3. 发明授权

US4854687A Beam steering mirror construction 失效
标题翻译：光束转向镜结构
公开(公告)号：US4854687A
公开(公告)日：1989-08-08
申请号：US152218
申请日：1988-02-04
申请人： Keith Fletcher
发明人： Keith Fletcher
IPC分类号： G02B7/182 , G02B26/08
CPC分类号： G02B26/0816 , G02B7/1827
摘要： A beam steering mirror is mounted in a frame which is centrally supported by a two axis pivot point. Two torque motors are each connected to the frame with parallel diagonally opposed connecting members. The connecting members, when in the form of cables, are pretensioned an amount greater than the dynamic slewing force.
摘要翻译：梁转向镜安装在由两轴枢轴点中心支撑的框架中。两个扭矩电机各自连接到具有平行对角相对的连接构件的框架。连接构件以电缆的形式被预张紧大于动态回转力的量。

4. 发明授权

US4539468A Water boiling vessel immersion heater with primary and secondary thermal cut-out protection 失效
标题翻译：水沸腾容器浸入式加热器具有初级和次级热切断保护
公开(公告)号：US4539468A
公开(公告)日：1985-09-03
申请号：US475825
申请日：1983-03-16
申请人： Richard A. Phillips , Keith Fletcher , Peter W. Naylor
发明人： Richard A. Phillips , Keith Fletcher , Peter W. Naylor
IPC分类号： A47J27/21 , H01H37/00 , H05B1/02 , A47J27/62 , H01H37/54 , H05B3/82
CPC分类号： H01H37/002 , A47J27/21108
摘要： An electric immersion heating element dry switch-on or boil dry protector unit for an electrically heated water boiling vessel comprises primary and secondary bimetals (31,32) responsive to the heating element head temperature and each arranged for actuating a respective one of primary and secondary switching contacts (11,12) connected in the line and neutral sides of the heating element supply via respective push rods (38,44). The secondary bimetal (32) is arranged to break later than the primary bimetal (31) in a dry switch-on or boil dry situation giving rise to excessive element temperatures, and to reset before the primary in a reducing temperature situation. The secondary bimetal (32) and associated switch contacts (12) provide back-up protection in the event of failure of the primary protection on account for example of welding of the primary switch contacts (11). A neon warning lamp connected across the secondary contacts (12) will be lit only if the secondary contacts open with the primary contacts closed and thus indicates failure of the primary protection. An advantageous manually releasable latching arrangement for the primary and/or secondary switching contacts is also provided. An additional bimetal subject to heating by steam vented from the vessel operates at least one of the switch contacts when water boils in the vessel to terminate the heating operation.
摘要翻译：用于电加热水沸腾容器的电浸式加热元件干式开启式或沸腾式干燥保护器单元包括响应于加热元件头温度的初级和次级双金属（31,32），每个双金属布置用于致动主要和次要的相应的一个通过相应的推杆（38,44）连接在加热元件供应管线和中性侧的开关触点（11,12）。次级双金属（32）布置成在干式开启或沸腾干燥情况下比初级双金属片（31）断裂，导致元件温度过高，并且在还原温度情况下在初级双金属片之前复位。辅助双金属片（32）和相关联的开关触点（12）在主开关触点（11）的焊接例如主要保护失效的情况下提供备用保护。连接在辅助触点（12）上的霓虹灯警告灯只有在主触点闭合时辅助触点断开，从而显示主保护装置的故障才会点亮。还提供了用于初级和/或次级开关触点的有利的手动释放闩锁装置。当容器中的水沸腾以终止加热操作时，通过从容器排出的蒸汽加热的另外的双金属操作至少一个开关触点。

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