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Class Information
Number: 73/313
Name: Measuring and testing > Liquid level or depth gauge > Float > With electrically controlled indicator
Description: Gauges having an indicator which is operated by the float through the medium of electrical means.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
4497205 Method and apparatus for automatically sensing the level of a liquid in a reservoir Feb. 5, 1985
4483193 Magnetic level indicators Nov. 20, 1984
4483192 Water level indicator for nuclear reactor vessel Nov. 20, 1984
4480469 Adjustable differential fluid level float indicator Nov. 6, 1984
4472969 Measuring instrument Sep. 25, 1984
4470296 Fuel gauge for an automotive vehicle Sep. 11, 1984
4466284 Fine resolution liquid level detector Aug. 21, 1984
4459584 Automatic liquid level indicator and alarm system Jul. 10, 1984
4453400 Leak detector Jun. 12, 1984
4447743 High pressure liquid level monitor May. 8, 1984
4441364 Liquid-level transducer/indicator Apr. 10, 1984
4442405 Float assembly for a sensor Apr. 10, 1984
4422328 Liquid level sensor Dec. 27, 1983
4422084 Fluid tank and device for detecting remaining fluid Dec. 20, 1983
4418712 Overflow control system Dec. 6, 1983
4386406 Fuel level measuring method and apparatus of the same May. 31, 1983
4384184 Explosion-proof device for measuring liquid levels May. 17, 1983
4380243 Overflow control system Apr. 19, 1983
4365510 Method and device for measuring the height of at least one separation layer in the material bed of a density sorting machine Dec. 28, 1982
4361835 Hall-cell liquid level detector Nov. 30, 1982
4361039 Tank for transporting liquid material Nov. 30, 1982
4356729 Fluid level detector Nov. 2, 1982
4342224 Housing unit for liquid gauge and strainer Aug. 3, 1982
4337657 Oil level gauge Jul. 6, 1982
4326413 Liquid-level gauge for vehicles Apr. 27, 1982
4321826 Flowmeter for fluid flow through weirs and parshall flumes Mar. 30, 1982
4305420 Automatic water or liquid safety valve assembly Dec. 15, 1981
4305285 Liquid level detecting and warning device Dec. 15, 1981
4305283 Position determining apparatus Dec. 15, 1981
4303984 Sensor output correction circuit Dec. 1, 1981
4284904 Encapsulated magnetically sensitive circuit elements for depth-indicating purposes or the like Aug. 18, 1981
4270033 Brake-fluid level detector May. 26, 1981
4265114 Liquid level indicator for a reservoir May. 5, 1981
4259975 Stock tank gauger-level controller Apr. 7, 1981
4258238 Liquid level signal transmitter Mar. 24, 1981
4255975 Device for the precise measurement of movements or deformations Mar. 17, 1981
4250750 Liquid level measuring system Feb. 17, 1981
4244219 Liquid-level meter Jan. 13, 1981
4231324 Milk quantity meter Nov. 4, 1980
4227057 Apparatus for ascertaining the upper level of liquids in tanks or the like Oct. 7, 1980
4227236 Flexible body for use in liquid level indicating apparatus Oct. 7, 1980
4223190 Mercury float switch Sep. 16, 1980
4220047 Fuel tank gauge Sep. 2, 1980
4217779 Liquid level sensing means Aug. 19, 1980
4194396 Automobile fuel gauge system Mar. 25, 1980
4186419 Apparatus for monitoring and controlling liquid level Jan. 29, 1980
4184370 Liquid level measuring device Jan. 22, 1980
4178802 Apparatus for indicating quantity of fuel of a vehicle Dec. 18, 1979
4175435 Liquid level detecting device Nov. 27, 1979
4164145 Self-powered electrical meter for display of a liquid-level or the like measurement Aug. 14, 1979

1 2 3 4 5 6 7 8 9










 
 
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