Electricity: circuit makers and breakers – Special application
Patent
1979-04-20
1981-07-14
Witkowski, S. J.
Electricity: circuit makers and breakers
Special application
200 6152, 200 84R, 340689, H01H 3502
Patent
active
042788544
ABSTRACT:
A tilt indicating device mountable on a tiltable vehicle or machine component and operable to close an electrical circuit to thereby give an audio/visual warning or initiate levelling action in case of tilt. The device comprises an insulated housing having a chamber therein filled with electrically non-conductive viscous damping fluid in which a float is submerged and upwardly bouyed. An electrically conductive ball and socket pivot assembly connects the float to the chamber floor and enables tilting of the housing relative to the float in any direction from vertical. An electrically conductive circular disc horizontally mounted on the float stem and electrically connected through the pivot means to a connector terminal on the exterior of the housing is spaced from but engageable during tilt with the upper edge of an annular collector ring mounted on the housing floor and surrounding the pivot means. The collector ring which may include either a continuous electrical conductor (for indicating a predetermined degree of tilt in any direction) or a plurality of conductive segments insulated from one another (for indicating the direction as well as degree of tilt) is electrically connected to a connector terminal or terminals on the exterior of the housing. An air-filled fluid expansion chamber in the housing connects to the fluid chamber. The pivot assembly is vertically adjustable from the exterior of the housing to change the spacing between the disc and collector ring and thereby determine the tilt angle necessary for contact closure. A spirit level, adjustable levelling screws and mounting means are provided on the housing.
REFERENCES:
patent: 2094767 (1937-10-01), Coburn
patent: 2820116 (1958-01-01), Alberts
patent: 3161739 (1964-12-01), Suozzo
patent: 3359550 (1967-12-01), Christensen
Ginsburg Morris
Nilles James E.
Witkowski S. J.
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