Invention Grant
- Patent Title: Power sensor
- Patent Title (中): 功率传感器
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Application No.: US12999042Application Date: 2008-11-26
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Publication No.: US08831787B2Publication Date: 2014-09-09
- Inventor: Christopher Gavin Brickell , Scott Jeffrey Farrell
- Applicant: Christopher Gavin Brickell , Scott Jeffrey Farrell
- Applicant Address: US WA Tukwila
- Assignee: SafeWorks, LLC
- Current Assignee: SafeWorks, LLC
- Current Assignee Address: US WA Tukwila
- Agency: Baker & Hostetler LLP
- International Application: PCT/US2008/084961 WO 20081126
- International Announcement: WO2009/070725 WO 20090604
- Main IPC: G05D13/00
- IPC: G05D13/00 ; G05D3/12 ; G05D5/00 ; G05D11/00 ; B66C13/06 ; B66C13/16 ; B66C13/12 ; B66C15/06 ; G01R21/06

Abstract:
Disclosed is an apparatus, system, and method for sensing the current supplied to a motorized hoist for raising a maintenance platform and providing an estimate of the operating status of the motor, for example, as stopped, starting, stalled or operating as expected. In various embodiments, measures of voltage and current may be used to determine the operating condition of the hoist and to estimate the magnitude of the applied load. Unintended modes of operation can then be determined so that the conditions can be indicated to the operator and protective measures taken.
Public/Granted literature
- US20110184560A1 POWER SENSOR Public/Granted day:2011-07-28
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