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Class Information
Number: 137/132
Name: Fluid handling > Siphons > Periodic or accumulation responsive discharge
Description: Apparatus having means responsive to a condition or characteristic of the fluid in the system whereby the siphon is caused to discharge at recurrent intervals, i.e., as often as a certain level of tank contents is reached.










Sub-classes under this class:

Class Number Class Name Patents
137/134 Control by filling auxiliary tank 2
137/135 Float-operated inlet to siphon 24
137/136 Release of trapped air 8
137/133 With manual control 5


Patents under this class:

Patent Number Title Of Patent Date Issued
8623204 Stormwater gully Jan. 7, 2014
8480887 Stormwater gully Jul. 9, 2013
8397735 Dirt separator device with level control Mar. 19, 2013
8104499 Precision siphon operated septic field dosing system with filtration and backwash Jan. 31, 2012
6945267 Self-restarting pool cover siphon Sep. 20, 2005
6918404 Irrigation and drainage based on hydrodynamic unsaturated fluid flow Jul. 19, 2005
6824696 Oil from water separator Nov. 30, 2004
6792963 Coolant fed humidifier having siphon drain and method therefor Sep. 21, 2004
6766817 Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action Jul. 27, 2004
5881753 Passive fluid level controller Mar. 16, 1999
5738137 Apparatus for creating surges in an aquarium Apr. 14, 1998
5718847 Automatic siphon drain apparatus and method Feb. 17, 1998
5628122 Lint remover for a clothes drying machine May. 13, 1997
5381956 Self activating falling water display Jan. 17, 1995
5358000 Siphon pump having a metering chamber Oct. 25, 1994
5284173 Automatic continuous self-draining, self-cleaning and self-replenishing apparatus and system for watering stock Feb. 8, 1994
5017199 Spent solvent recovery in circuit processing May. 21, 1991
4938420 Device for irrigating plants Jul. 3, 1990
4911891 Sample monitoring instrument for on-line application Mar. 27, 1990
4865069 Fluid drain pump Sep. 12, 1989
4853984 System and method for maintaining a swimming pool cover drained of accumulated precipitation Aug. 8, 1989
4846206 Automatic watering system using siphon action Jul. 11, 1989
4799509 Venting arrangement for fuel tanks of motor vehicles Jan. 24, 1989
4798222 Valve assembly particularly usable with a coffee brewing basket Jan. 17, 1989
4797028 Beaver control siphon apparatus Jan. 10, 1989
4718579 Beverage dispensing machine Jan. 12, 1988
4682579 Condensate overflow control for furnace Jul. 28, 1987
4665453 Floppy disc recording and/or reproducing apparatus May. 12, 1987
4651767 Conveyor dewatering system Mar. 24, 1987
4649946 Pipet cleaning apparatus Mar. 17, 1987
4635540 Baker's dough proofing and raising unit Jan. 13, 1987
4573490 Apparatus for the automatic purging of the reservoir in a water recirculation system Mar. 4, 1986
4545528 Sprinkler control system Oct. 8, 1985
4540014 Hydraulic memory device Sep. 10, 1985
4526757 Pulsed flow vapor-liquid reactor Jul. 2, 1985
4480655 Liquid-plug-creating device Nov. 6, 1984
4479482 Drain leg assembly Oct. 30, 1984
4474111 Cleaning system for printing presses Oct. 2, 1984
4414996 System for automatically dispensing liquid chemicals into an intermittently flowing liquid stream Nov. 15, 1983
4406300 Roof siphon drain Sep. 27, 1983
4361522 Automatic flushing and draining apparatus for evaporative coolers Nov. 30, 1982
4333887 Automatic flushing and draining apparatus for evaporative coolers Jun. 8, 1982
4291836 Intermittent water-supply system Sep. 29, 1981
4288985 Apparatus for generating energy from the rise and fall of tides Sep. 15, 1981
4281625 Automatic water supply device Aug. 4, 1981
4248258 Flat roof auxiliary drain system Feb. 3, 1981
4129140 Automatic flushing device Dec. 12, 1978
4040962 Apparatus for feeding chemicals to a liquid stream Aug. 9, 1977











 
 
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