发明授权
- 专利标题： Method and apparatus for an emergency lowering kit
- 专利标题（中）： 紧急降压套件的方法和装置
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申请号： US14444717申请日： 2014-07-28
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公开(公告)号： US09409752B2公开(公告)日： 2016-08-09
- 发明人: Charles Sutherland
- 申请人： Electronic Power Design, Inc.
- 申请人地址： US TX North Houston
- 专利权人： Electronic Power Design, Inc.
- 当前专利权人： Electronic Power Design, Inc.
- 当前专利权人地址： US TX North Houston
- 代理机构： G. Michael Roebuck, PC
- 主分类号： H02P27/04
- IPC分类号： H02P27/04 ; B66C13/18 ; B66C13/22 ; H02P3/12 ; G05B15/02 ; B66C13/14 ; B66C23/16 ; B66C23/88
摘要：
A method and apparatus are disclosed for lowering a load on a direct current hoist motor during an electrical power interruption, the method including but not limited to determining in a crane processor that the electrical power interruption has occurred; and providing a brake assist current to shunt field on the direct current hoist motor to produce a counter torque in the hoist motor.
公开/授权文献
- US20150130375A1 METHOD AND APPARATUS FOR AN EMERGENCY LOWERING KIT 公开/授权日：2015-05-14
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