Fog-resistant gauge

Details Fog-resistant gauge Fog-resistant gauge

1986-01-13

1986-12-16

Levy, Stewart J.

Measuring and testing

Instrument casing

116305, G01D 1124, G01D 1126

Patent

active

046287310

ABSTRACT:
An improved gauge design is presented wherein the tendency of fogging of the lenses is eliminated or reduced. The gauge of this invention includes an inner lens spaced between the dial and outer lens and a surronding baffle which is disposed between the lens and the inner surface of the gauge case. The baffle restricts air flow into and out of the space between the two lenses. In addition, both the inner and outer lens preferably are coated with a clear anti-fog coating. Finally, the port in the gauge within which the needle is mounted is surrounded with a sleeve to further restrict air flow.

REFERENCES:
patent: 2238071 (1941-04-01), Nazar
patent: 2416780 (1947-03-01), Tellier
patent: 2426712 (1947-09-01), Simpson
patent: 2701969 (1955-02-01), Meredith
patent: 2773388 (1956-12-01), Prosser
patent: 3530723 (1970-09-01), Hogue et al.
patent: 3659457 (1972-05-01), Ostrowski
patent: 3795148 (1974-03-01), Luich
patent: 3921569 (1975-11-01), Miller et al.
patent: 4333348 (1982-06-01), Berninger

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