Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1992-03-23
1994-04-05
Williams, Hezron E.
Communications: electrical
Condition responsive indicating system
Specific condition
340679, 340439, G08B 2100
Patent
active
053009258
ABSTRACT:
A process and apparatus monitors vehicle crawler chains for malfunctions during the driving operation. In particular, the process and apparatus monitors unacceptable changes of the pitch of the crawler chain which impairs the driving operation. The actual running sound of a crawler chain is sensed and is compared with the median running sound. When the actual running sound exceeds the median running sound by more than a given percentage and this excess occurs in the case of at least one chain link with a frequency that is higher than a given frequency, a warning signal is emitted to the driver.
REFERENCES:
patent: 3095532 (1963-06-01), Floyd
patent: 5103213 (1992-04-01), Marsh
Dr. Ing. h.c.F. Porsche AG
Oda Christine K.
Williams Hezron E.
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