Gauge assembly

Details Gauge assembly Gauge assembly

1996-01-17

1997-05-20

Raevis, Robert

Measuring and testing

Instrument casing

277 56, G01L 1914

Patent

active

056314191

ABSTRACT:
A gauge assembly for a vehicle instrument cluster is provided. The gauge assembly includes a pointer assembly and a plastic housing having a pair of housing elements. One of the housing elements includes a receptacle which defines a side wall having a first circumferentially extending mating surface, while the other housing element includes a plug which defines a side wall having a second circumferentially extending mating surface. Upon assembly of the housing, the plug and receptacle together define a chamber therebetween. The pointer assembly includes a magnet rotatably disposed within the chamber, a pointer body positioned outside of the housing, and a shaft rotatably extending along an axis of rotation defined through one of the housing elements. The shaft couples the pointer body to the magnet for rotative movement about the axis of rotation. The gauge assembly further includes a viscous damping fluid carried in the chamber for damping the rotational movement of the magnet. To prevent fluid leakage from the chamber, the second mating surface is received in sealing engagement with the first mating surface and forms a labyrinthian seal therebetween.

REFERENCES:
patent: 2779442 (1957-01-01), Bacon
patent: 3530724 (1970-09-01), Hartland et al.
patent: 4021016 (1977-05-01), Hart
patent: 4214486 (1980-07-01), Gorgens et al.
patent: 4328639 (1982-05-01), Cotey
patent: 5237871 (1993-08-01), Henderson et al.
Dragerwerk, Sheet 1 only of UK 105,060.

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