Threaded temperature indicating plug for hot oil housings such a

Details Threaded temperature indicating plug for hot oil housings such a Threaded temperature indicating plug for hot oil housings such a

1990-05-14

1991-12-31

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

123196AB, 374162, 411 13, G01K 102, G01K 1112

Patent

active

050767089

ABSTRACT:
A threaded temperature indicating plug for hot oil containing housings such as vehicle transmissions and the like that can replace the standard oil level plugs of the same and as well afford a plug that from which the temperature at which the oil may have overheated will be recorded and whether there is a definite need to change the oil in the transmission. Liquid crystal areas are provided on an indicator label that is fixed to the plug bolt shank in a liquid-tight manner by a fixed covering and for direct contact with the oil body or a splash from oil at a lowered level.

REFERENCES:
patent: 1374857 (1921-04-01), Linebarger
patent: 2925576 (1960-02-01), Wakeland et al.
patent: 3260112 (1966-07-01), Godbey et al.
patent: 3651695 (1972-03-01), Brown
patent: 3864976 (1975-02-01), Parker
patent: 3877411 (1975-04-01), MacDonald
patent: 3987668 (1976-10-01), Popenoe
patent: 4679432 (1987-07-01), Draeger
patent: 4909685 (1990-03-01), Hirst

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