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Class Information
Number: 137/415
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Servo relay operation of control > Fluid pressure > From tank
Description: Apparatus in which the source of fluid pressure is the tank holding the liquid accumulation to the level of which the float responds.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8622072 |
Apparatus to control fluid flow |
Jan. 7, 2014 |
| 8596293 |
Water appliance having a flow control unit and a filter assembly |
Dec. 3, 2013 |
| 8091580 |
Pilot switch |
Jan. 10, 2012 |
| 7392822 |
Liquid level controller and pilot switch |
Jul. 1, 2008 |
| 6729367 |
Overflow prevention system and method using laminar-to-turbulent flow transition |
May. 4, 2004 |
| 6588449 |
Diesel fuel shut-off device |
Jul. 8, 2003 |
| 6354323 |
Liquid level controller |
Mar. 12, 2002 |
| 6178985 |
Automatic drain system |
Jan. 30, 2001 |
| 6079438 |
Valve device for controlling the filling level of cylinders and the like with liquefied gases |
Jun. 27, 2000 |
| 5992448 |
Liquid level controller |
Nov. 30, 1999 |
| 5842500 |
Overfill preventing valve |
Dec. 1, 1998 |
| 5832953 |
Overfill shut-off system for liquid storage tanks |
Nov. 10, 1998 |
| 5813432 |
Automatic shut-off valve arrangement |
Sep. 29, 1998 |
| 5121767 |
Automatic drain valve |
Jun. 16, 1992 |
| 5103855 |
Automatic condensate draining device for compressed air systems |
Apr. 14, 1992 |
| 4703784 |
Dual operation tank filling fitting with automatic shut-off |
Nov. 3, 1987 |
| 4488571 |
Flow-control system with pressure-responsive valve |
Dec. 18, 1984 |
| 4458714 |
Flow regulating device |
Jul. 10, 1984 |
| 4444230 |
Tank-mounted filling device |
Apr. 24, 1984 |
| 4390037 |
Gas regulation device for gas actuated valves |
Jun. 28, 1983 |
| 4305422 |
Filler valve for a gas tank |
Dec. 15, 1981 |
| 4275755 |
Steam trap |
Jun. 30, 1981 |
| 4011884 |
Liquid-level valving device particularly useful as automatic relief valve |
Mar. 15, 1977 |
| 3993090 |
Automatic valving device |
Nov. 23, 1976 |
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