Invention Grant
US08777138B2 Overload fault condition detection system for article destruction device
失效
用于物品销毁装置的过载故障状态检测系统
- Patent Title: Overload fault condition detection system for article destruction device
- Patent Title (中): 用于物品销毁装置的过载故障状态检测系统
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Application No.: US12687738Application Date: 2010-01-14
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Publication No.: US08777138B2Publication Date: 2014-07-15
- Inventor: Josh Davis , Jeffrey Jensen , Li (Henry) ZhiGuo , Hua (Kevin) Ren
- Applicant: Josh Davis , Jeffrey Jensen , Li (Henry) ZhiGuo , Hua (Kevin) Ren
- Applicant Address: VG
- Assignee: Techtronic Floor Care Technology Limited
- Current Assignee: Techtronic Floor Care Technology Limited
- Current Assignee Address: VG
- Agency: Hahn, Loeser & Parks, LLP
- Main IPC: B02C4/32
- IPC: B02C4/32 ; B02C7/14

Abstract:
An article destruction device includes an electric motor driving at least one moving component. An indication panel includes at least three visual indicators situated in sequence. Each visual indicator is associated with a stage of an approaching overload (motor cool down) condition. A first visual indicator lights when the motor or corresponding sensor temperature is below a first threshold, i.e., when the device is first powered on. A second indicator lights when the temperature exceeds the first threshold and is below at least a second threshold, i.e., the temperature is approaching a fault condition. A last visual indicator lights when the temperature exceeds the first and the at least second thresholds, i.e., the fault condition is met. A thermistor on the motor energizes (self-heats) with the motor. A thermostatic switch controls current flow through windings of the motor depending on measured temperatures meeting operating and equilibrium temperature thresholds.
Public/Granted literature
- US20100181398A1 OVERLOAD FAULT CONDITION DETECTION SYSTEM FOR ARTICLE DESTRUCTION DEVICE Public/Granted day:2010-07-22
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