专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4645887A Pressure differential bypass sensor switch 失效
标题翻译：压差旁路传感器开关
公开(公告)号：US4645887A
公开(公告)日：1987-02-24
申请号：US803299
申请日：1985-12-02
申请人： James C. Whiting
发明人： James C. Whiting
IPC分类号： B01D35/143 , H01H35/38 , H01H36/00
CPC分类号： B01D35/143 , H01H35/38 , H01H36/00
摘要： A pressure differential bypass sensor switch that utilizes the change in piston of a permanent magnet that is carried by a reciprocable position to actuate the switching element of an axial travel switch by the change in magnetic forces that act on the switching element as a result of the change in position of the reciprocable piston and the permanent magnet. Opposite sides of the piston are exposed, respectively, to the high pressure and low pressure sides of a filter in a liquid circulating system, and the piston is normally positioned at the high pressure side of a passage in which it travels by a spring that acts on it from the low pressure side. As the filter becomes clogged the pressure drop across it and, therefore, across the piston will increase, and the piston is calibrated so that an excessive pressure drop will drive it to the low pressure side. This movement of the piston will carry the permanent magnet to a different position relative to the switching element of the axial travel switch and change the magnetic forces acting on the switching element to provide a warning signal indicating an impending filter bypass operating condition.
摘要翻译：一种差压旁路传感器开关，其利用由可往复运动的位置承载的永磁体的活塞变化，以通过作为所述开关元件的结果的作用于开关元件的磁力的变化来驱动轴向行程开关的开关元件往复活塞和永磁体的位置改变。活塞的相对侧分别暴露在液体循环系统中的过滤器的高压和低压侧，并且活塞通常位于其通过弹簧行进的通道的高压侧，该弹簧作用从它的低压侧。当过滤器堵塞时，其上的压降以及因此在活塞上的压降将增加，并且活塞被校准，使得过大的压力降将驱动它到低压侧。活塞的这种移动将使永磁体相对于轴向行程开关的开关元件移动到不同的位置，并且改变作用在开关元件上的磁力，以提供指示即将过渡的旁路操作条件的警告信号。

2. 发明授权

US4792651A Pressure differential bypass sensor switch with magnetic thermal lockout 失效
标题翻译：带有磁热锁定的差压旁路传感器开关
公开(公告)号：US4792651A
公开(公告)日：1988-12-20
申请号：US123707
申请日：1987-11-23
申请人： James C. Whiting
发明人： James C. Whiting
IPC分类号： B01D35/143 , H01H35/28 , H01H35/38 , H01H37/58
CPC分类号： H01H35/38 , B01D35/143 , H01H35/28 , H01H37/585
摘要： A pressure differential bypass sensor switch with thermal lockout that utilizes change in position of a permanent magnet carried by a reciprocable piston responsive to pressure differential in a fluid system to actuate a magnetically actuatable electrical switch. Opposite sides of the reciprocable piston are exposed, respectively, to high pressure and low pressure sides of a filter located in a fluid circulating system. The reciprocable piston is normally positioned at the high pressure side of a passage in which it reciprocates, due to biasing by a spring acting on it from the low pressure side of the passage. As the filter becomes clogged, the pressure differential across it and, therefore, across the reciprocable piston will increase. The bypass sensor is calibrated so that a maximum allowable pressure differential in the fluid system will drive the reciprocable piston to the low pressure side of the passage. This movement of the reciprocable piston will carry the permanent magnet to a position relative to the magnetically actuatable electrical switch in which the magnetic field thereof will cause the magnetically actuatable electrical switch to actuate, thereby providing a warning signal indicating an impending filter bypass operating condition. A thermal ferrite is provided adjacent the permanent magnet. The thermal ferrite is selected to have a Curie temperature corresponding to the temperature below which fluid viscosity in the fluid system is high. In the event the reciprocable piston moves due to a pressure differential attributable to high fluid viscosity because of operation below the Curie temperature, the thermal ferrite will act to regionally confine the magnetic field of the permanent magnet, resulting in no actuation of the magnetically actuatable electrical switch.
摘要翻译：一种具有热锁定的压差旁路传感器开关，其利用响应于流体系统中的压力差的可往复运动的活塞承载的永磁体的位置的变化来致动可磁致动的电开关。可往复运动活塞的相对侧分别暴露在位于流体循环系统中的过滤器的高压和低压侧。往复运动的活塞通常位于通道的高压侧，由于通过从通道的低压侧作用在其上的弹簧的偏置，往复运动的往复运动的高压侧往复运动。当过滤器堵塞时，跨过其的压差，因此跨越往复活塞的压差将增加。旁路传感器被校准，使得流体系统中的最大允许压力差将驱动往复活塞到通道的低压侧。可往复运动的这种运动将永久磁铁运送到相对于可磁致动的电气开关的位置，在该位置，磁场将导致可磁致动的电气开关致动，从而提供指示即将过滤器旁路运行状态的警告信号。在永磁体附近提供热铁氧体。选择热铁氧体具有对应于流体系统中的流体粘度高的温度的居里温度。在往复活塞由于由于低于居里温度的操作导致的高流体粘度的压差而移动的情况下，热铁氧体将作用于区域地限制永磁体的磁场，导致不可致动磁力驱动电气开关。

3. 发明授权

US4745876A Differential pressure responsive indicating device 失效
标题翻译：差压响应指示装置
公开(公告)号：US4745876A
公开(公告)日：1988-05-24
申请号：US800085
申请日：1985-11-21
申请人： James C. Whiting
发明人： James C. Whiting
IPC分类号： B01D35/143 , G01L9/14 , G01L13/02 , G01L19/12
CPC分类号： G01L13/02 , B01D35/143 , G01L19/12 , G01L9/14 , Y10S116/42
摘要： A temperature compensating differential pressure indicating device having a lock-out feature requiring internal reset after actuation. The differential pressure responsive indicating device includes a case having an internal chamber and a piston reciprocably and sealingly disposed in the internal chamber. A piston follower is also reciprocably disposed in the internal chamber and abuts against the piston. A first biasing element biases the piston and the piston follower in a first direction while a second biasing element biases these components in the opposite direction, the second biasing element being weaker than the first biasing element. The piston is displaceable in response to the pressure differential between an inlet pressure and an outlet pressure. A shape memory alloy temperature responsive abutment permits the piston follower to move together with the piston at or above a predetermined temperature, while preventing motion of the piston follower below the predetermined temperature. An indicator is provided which indicates, by displacement, the displacement of the piston follower beyond a predetermined axial position, thus indicating that the predetermined pressure differential and the predetermined temperature have been simultaneously exceeded.
摘要翻译：具有锁定功能的温度补偿差压指示装置，其在致动之后需要内部复位。压差响应指示装置包括具有内部腔室和可往复运动并密封地设置在内部腔室中的活塞的壳体。活塞从动件也可往复地设置在内室中并且抵靠活塞。第一偏置元件在第一方向上偏压活塞和活塞从动件，同时第二偏置元件沿相反方向偏压这些部件，第二偏置元件比第一偏置元件弱。活塞可响应于入口压力和出口压力之间的压力差来移动。形状记忆合金温度响应邻接允许活塞从动件与活塞一起等于或高于预定温度，同时防止活塞从动件的运动低于预定温度。提供了一种指示器，其通过位移来指示活塞从动件的位移超过预定轴向位置，从而指示预定压力差和预定温度已经被同时超过。

4. 发明授权

US4729339A Pressure differential indicator with non-mechanical thermal lockout 失效
标题翻译：带非机械热锁定的压差指示器
公开(公告)号：US4729339A
公开(公告)日：1988-03-08
申请号：US854305
申请日：1986-04-21
申请人： James C. Whiting
发明人： James C. Whiting
IPC分类号： B01D35/143 , G01L7/16 , G01L13/02 , G01L19/12
CPC分类号： G01L7/166 , B01D35/143 , G01L13/02 , G01L7/163 , Y10S116/42
摘要： An excessive pressure differential indicating device for use with a filter in a liquid circulating system. The device has a reciprocable piston that reciprocates between a high pressure location, when the pressure differential is not excessive, and a low pressure location, when the pressure differential is excessive. The device has an indicator button with a magnetically conductive element, and the button is retained in a non-indicating position when the reciprocable piston is at the high pressure location by magnetic attraction between a permanent magnet carried by the reciprocable piston and the magnetically conductive element, a spring being provided to bias the indicator button to an indicating position when the reciprocable piston moves with the permanent magnet away from the indicator button to the low pressure location. A thermal ferrite ring, which is magnetic at low temperatures and substantially less magnetic at high temperatures, is provided to retain the indicator button in its non-indicating position at low temperatures, even if the reciprocable piston moves to the low pressure location, since the excessive pressure differential which causes such movement of the reciprocable piston can, at low temperature, be caused solely by the increased viscosity of the circulating liquid, as opposied to an excessively clogged condition of the filter.
摘要翻译：用于与液体循环系统中的过滤器一起使用的过大的压差指示装置。该装置具有可往复运动的活塞，当压力差不大时，在高压位置和低压位置之间往复运动。该装置具有带有导电元件的指示器按钮，并且当往复活塞处于高压位置时，该按钮保持在非指示位置，该弹性活塞位于由可往复运动的活塞所承载的永磁体与导电元件当弹性活塞随着永磁体远离指示器按钮移动到低压位置时，提供弹簧以将指示器按钮偏置到指示位置。提供了一种在低温下是磁性的并且在高温下具有较低磁性的热铁氧体环，即使往复活塞移动到低压位置，也可以将指示器按钮保持在低温下的非指示位置，因为在低温下引起往复活塞的这种移动的过大的压差可以由循环液体的粘度增加而引起，这与过滤器过度堵塞的情况相反。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式