Weighing scales – With alarm or signal
Patent
1999-09-03
2000-09-19
Gibson, Randy W.
Weighing scales
With alarm or signal
177225, 177245, 600580, G01G 2318, G01G 1900
Patent
active
061215554
ABSTRACT:
A fluid sensor apparatus for monitoring fluid in a container. The fluid sensor apparatus comprises a housing having an upper hook extending from a top thereof to allow the housing to be suspended. A lower hook is telescopically received in the housing and extends from a bottom thereof. The lower hook is adapted for suspending a fluid container therefrom. The lower hook is movable relative to the housing. A cam member is located inside the housing and is movable relative thereto. The cam member is coupled to an upper end of the lower hook. The cam member has a stepped gradation. A biasing member is coupled between a lower shoulder of the cam member and the housing. The biasing member is adapted to apply a force against the cam member to cause the cam member to be biased upward relative to the housing to an upper position. A switch is coupled to the housing and has an actuator located in relation to the stepped gradation of the cam member. The switch is in a first state when the cam member is in the upper position. The switch is in a second state when a load suspended from the lower hook overcomes the force of the biasing member causing the cam member to be moved to a lower position relative to the housing. An alarm coupled to the switch is operative to indicate a fluid condition when the switch is in one of the first and second states.
REFERENCES:
patent: 3287721 (1966-11-01), Baehr
patent: 3389387 (1968-06-01), Hulse et al.
patent: 4176349 (1979-11-01), Fliegel
patent: 4198626 (1980-04-01), Rauscher
patent: 4931777 (1990-06-01), Chiang
patent: 5112319 (1992-05-01), Lai
Cho David
Jacobs Raymond
Kuzelka Russell
Nowosielski Albert
Zander Charles
Gibson Randy W.
Northgate Technologies Incorporated
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