Communications: electrical – Selective – Having indication or alarm
Patent
1978-03-13
1979-07-17
Caldwell, Sr., John W.
Communications: electrical
Selective
Having indication or alarm
180179, 246182C, 303103, 340671, 361242, G08B 2100, B60T 804
Patent
active
041617177
ABSTRACT:
A multi-axle traction vehicle is equipped with apparatus for sensing the speeds of its respective drive axles, and control apparatus is provided for producing a predetermined warning signal if the sensed speed of one and only one of the axles is less than a predetermined low threshold level. In addition, apparatus is provided for inhibiting the control apparatus unless all but one of the sensed axle speeds are greater than a predetermined higher threshold level thereby minimizing the opportunity of producing a false warning signal.
REFERENCES:
patent: 2601140 (1952-06-01), Hines
patent: 2735090 (1956-02-01), Maenpaa
patent: 2778008 (1957-01-01), Wilson et al.
patent: 2959772 (1960-11-01), Bruner
patent: 3699563 (1972-10-01), Cass
patent: 3706351 (1972-12-01), Neisch
patent: 3880475 (1975-04-01), Booher
patent: 4031509 (1977-06-01), Matulevich
Hoover James W.
Long James
Matulevich Edward S.
Beusse J. H.
Caldwell Sr. John W.
General Electric Company
Nowicki Joseph E.
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