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Class Information
Number: 137/585
Name: Fluid handling > Systems > System with plural openings, one a gas vent or access opening > Access and outlet > Tank access opening and bottom outlet
Description: Systems in which the access opening is formed in a tank, such as a tank car, usually comprising a manhole, and in which the outlet is at the bottom of the tank.

Sub-classes under this class:

Class Number Class Name Patents
137/586 Access opening interlock or telltale on outlet valve actuator 6

Patents under this class:

Patent Number Title Of Patent Date Issued
8342353 Interlock vessel for hyperbaric transfer system Jan. 1, 2013
6966333 Rainwater collection device Nov. 22, 2005
6739349 Bulk milk tank with adjustable ladder May. 25, 2004
6727510 Transportation vessel for radioactive substance and method of loading closed vessel Apr. 27, 2004
6090283 Filter drain with spring enclosure Jul. 18, 2000
6065452 Fuel feeder for vehicles May. 23, 2000
5809587 Safety device for a suction outlet Sep. 22, 1998
5782265 Filtration and transportable container for processing waste into fuel Jul. 21, 1998
5538038 Vacuum relief fitting for sanitary silos Jul. 23, 1996
5386845 Fluid transport apparatus with side recessed fitting well Feb. 7, 1995
5251658 Fluid apparatus with at least one tube well Oct. 12, 1993
5211202 Fluid apparatus with pressure-tight recessed well May. 18, 1993
5065890 Comply system Nov. 19, 1991
4393980 Liquid container arranged to limit undesirable drainage Jul. 19, 1983
4202370 Apparatus for use in generating liquid concentration gradients hydrostatically May. 13, 1980

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