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Norman Holzhauer Phones & Addresses

  • 6274 Manteo Dr, Dublin, OH 43016 (614) 733-0969
  • 52 Fordham Dr, Matawan, NJ 07747 (732) 566-9461
  • Franklin, OH

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Us Patents

Fan Speed And/Or Fan Failure Detector

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US Patent:
44791151, Oct 23, 1984
Filed:
Dec 20, 1982
Appl. No.:
6/451549
Inventors:
Norman H. Holzhauer - Aberdeen NJ
Assignee:
AT&T Bell Laboratories - Murray Hill NJ
International Classification:
G08B 2100
US Classification:
340611
Abstract:
A pressure transducer, such as a microphone, is placed in proximity to the blades of a fan, such as a fan used to cool electronic equipment. As each blade passes the transducer, a pressure wave is generated that is converted into an electrical pulse by the transducer. Circuitry responsive to those pulses signals an alarm if the fan is not operating properly.
Norman H Holzhauer from Dublin, OH, age ~91 Get Report