发明授权
- 专利标题： Motor overload protection for cargo canopy systems
- 专利标题（中）： 货物罩系统的电机过载保护
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申请号： US13840530申请日： 2013-03-15
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公开(公告)号： US09136694B2公开(公告)日： 2015-09-15
- 发明人: Rory H. Chenowth
- 申请人： Rory H. Chenowth
- 代理机构： Charmasson, Buchaca & Leach, LLP
- 主分类号： H02H7/00
- IPC分类号： H02H7/00 ; H02H7/085 ; B60P7/02 ; H02P29/02 ; H02P7/00
摘要：
In an installation controlling the operation of one or more motors driving a mechanism for deploying or retracting a protective canopy over the cargo compartment of a truck or wagon, a method and device for protecting the motor windings against excessive power use by measuring the level of drawn current with a digital ammeter. If the current exceeds a threshold level of operation, a timer is started. As soon as a given absolute safe period of operation is surpassed, a breaker switch is tripped interrupting the motor power supply. A plural number of trip points can be programmed into the device.
公开/授权文献
- US20140021736A1 Motor overload protection for cargo canopy systems 公开/授权日：2014-01-23
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