HAROLD W HARPER
Real Estate Commission in Las Vegas, NV
License number
Nevada S.0076786
Issued Date
Jun 8, 2007
Expiration Date
Jun 30, 2018
Category
Real Estate Appraisers
Type
Salesperson
Address
Address
Las Vegas, NV 89178
Professional information
Worn Brush Indicator
US Patent:
4344072, Aug 10, 1982
Filed:
Dec 10, 1979
Appl. No.:
6/101887
Inventors:
Harold L. Harper - Las Vegas NV
International Classification:
G08B 2100
US Classification:
340648
Abstract:
A worn brush indicator for machinery, e. g. , a motor generator, wherein a carbon brush is in engagement with a moving contactor, e. g. , a commutator or slip ring. The brush is made with an elongated cavity, and an insulated conductor is placed in the cavity. When the brush is worn to a point where the cavity is exposed and the insulating is worn away, the conductive member, having a carbon tip, engages the commutator, and an alarm circuit connected between the conductive member and the brush proper signals a worn brush condition.