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Class Information
Number: 137/408
Name: Fluid handling > Liquid level responsive or maintaining systems > By weight of accumulated fluid > In gravitating tank
Description: Apparatus in which a single gravitating tank, with or without its mounting means, constitutes both the liquid accumulating means and the liquid level sensing means.

Patents under this class:

Patent Number Title Of Patent Date Issued
5950692 Arrangement for limiting the fill level of a fuel tank Sep. 14, 1999
5715856 Liquid flow control apparatus Feb. 10, 1998
5421515 Automatic irrigation device Jun. 6, 1995
5361795 Furnace waste water freeze protection method Nov. 8, 1994
5240033 Drink dispenser having a pivoted liquid supply tank including a plug-in connector assembly Aug. 31, 1993
4917831 Buoyant tank carbonator pump control for post-mix beverage apparatus Apr. 17, 1990
4838731 Septic tank distribution box system Jun. 13, 1989
4714177 Device for the metering of a chemical, particularly for seed treatment Dec. 22, 1987
4455139 Intravenous liquid leveling device Jun. 19, 1984
4448210 Apparatus and method for controlling the level of a liquid in a tank May. 15, 1984
4357827 Gravimetric absorbency tester Nov. 9, 1982
4286618 Valve Sep. 1, 1981
4280528 Waste water conveyance apparatus Jul. 28, 1981
4241538 Device for automatically watering plant containers Dec. 30, 1980
4034775 Sequencing valve Jul. 12, 1977
3938539 Apparatus for leading off air in connection with the measuring of the flow of a liquid Feb. 17, 1976

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