Annunciator with internal tachometer

Details Annunciator with internal tachometer Annunciator with internal tachometer

1999-07-09

2000-11-07

Ballato, Josie

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307 66, H02S 906

Patent

active

061441163

ABSTRACT:
An annunciator device that utilizes a microprocessor allows for the inclusion of a tachometer or an hourmeter-tachometer, functions that typically require external instruments. A display circuit sequentially provides a digital readout indicative of a fault condition, engine speed and elapsed run time. The system draws sufficiently low current to be powered from a CD ignition or magnetic pickup power supply and backup battery. An annunciator device that allows for the inclusion of a tachometer, or a tachometer and an hourmeter, eliminates a great deal of cost by reducing instrument count, customer wiring, and overall instrument panel size.

REFERENCES:
patent: 4181883 (1980-01-01), Beeghly et al.
patent: 4336463 (1982-06-01), Beeghly
patent: 5563456 (1996-10-01), Berger
Murphy,S15-96122B, Catalog Section 50, Jul. 1999, 00-02-0255, Murphy, Tulsa, OK.
Murphy,MK3-95052B, Catalog Section 50, Jan. 1998, 00-02-0116, Murphy, Tulsa, OK.
Murphy,SHD3-97050B, Catalog Section 20, Mar. 1999, 00-02-0287, Murphy, Tulsa, OK.

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