US3820754A - Hydraulic flush tank with improved seating and resealing means - Google Patents
Hydraulic flush tank with improved seating and resealing means Download PDFInfo
- Publication number
- US3820754A US3820754A US00281348A US28134872A US3820754A US 3820754 A US3820754 A US 3820754A US 00281348 A US00281348 A US 00281348A US 28134872 A US28134872 A US 28134872A US 3820754 A US3820754 A US 3820754A
- Authority
- US
- United States
- Prior art keywords
- plug
- tank
- cylinder
- valve
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
- E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber
Definitions
- the plug is capable of being seated within the outlet of the tank and has an aperture therein into which the valve is slidably received.
- the valve is attached to a stem which is constantly urged upwardly by the action of a spring.
- the valve is pushed downward from a seated position in the plug against the action of the spring when the tank is flushed. This downward movement of the valve opens the aperture in the plug in which the valve was seated which decreases the pressure within the cylinder above the plug and causes the plug to move upwardly from its seated position in the tank outlet thus opening the outlet for the passage of water from the tank during the flushing cycle.
- the plug drops.
- the spring action of the valve tends to prevent the plug from seating thus allowing some liquid to flow through the outlet as the tank is being filled.
- the plug responds to pressure created by liquid coming into the tank by moving slowly in opposition to the force of the spring and valve until the plug is seated and the tank is resealed.
- the field of the present invention is liquid flushing assemblies.
- the present invention more particularly, relates to a small compact water flushing assembly for rapidly discharging a quantity of water as a slug of water under pressure.
- One type of device which enables efficient flushing with a fraction of the amount of water utilized by conventional gravity type toilets is a hydraulic toilet flushing device
- Hydraulic toilet flushing devices are very effective in that they can be flushed with a relatively small volume of water and have performance characteristics which are competitive with conventional gravity type toilets. Indeed, such devices are a significant breakthrough in the water closet art.
- the present invention is directed to a new and improved seating and resealing means for use in hydraulic toilet flushing devices.
- the present invention is a new hydraulic flush tank with an improved seating and resealing device.
- the flush tank operates by pushing a button in a downward direction.
- the device includes the combination of a sealing plug and a spring loaded valve slidably received within an aperture in the plug.
- the valve is connected to a button outside of the tank. When the button is pushed downwardly, the valve leaves its seated position in the plug thus opening the plug. When the plug is open, the pressure above the plug decreases which causes the plug to rise and expose the outlet in the tank.
- the spring tends to prevent the plug from seating after the tank has been flushed thus allowing some liquid to flow through the outlet as the tank is being filled. This flow of liquid is used to reseal the bowl.
- the plug is also designed to respond to the increasing pressure created by incoming liquid after the tank is flushed, Thus, as the tank is filling, the plug opposes the action of the spring loaded valve. Such opposition continues until the plug is seated.
- Another object of the invention is the provision of a cylinder associated with a hermetically sealed tank for holding an amount of liquid and compressed air, an outlet from the tank through the cylinder and a normally closed plug in the outlet which can be lifted by the action of a button.
- a further object of the invention is to provide a hydraulic toilet which can be flushed by pressing a button.
- FIG. 3 is a view similar to FIG. 2, but showing the orientation of the various components of the seating and resealing means at a different time during the flush cycle;
- FIG. 4 is a view similar to FIG. 2, but showing the orientation of the various components of the seating and resealing means at a point in time during the reseal cycle;
- FIG. 5 is a view similar to FIG. 2, but showing the tank in a sealed and seated position ready for the commencement of the flush cycle.
- the present invention relates in general to liquid flushing devices and more particularly to hydraulic toi lets.
- a hermetically sealed container or tank 10 is shown secured on a bowl 12 with a filler tube 14 connected through the bottom portion of the tank 10. It is to be noted that the tank 10 of the present invention is mounted in association with a toilet bowl 12. The tank 10 of the present invention, however, may be adapted to be mounted within a conventional toilet tank as a replacement for conventional flushing equipment.
- a check valve assembly 16 is connected between the filler tube 14 and a conduit 18.
- Conduit 18 is connected to a source of pressurized water, such as a typical source of city water with an average pressure which, in most cases, is in the order of thirty pounds per square inch or higher.
- Tank 10 may be equipped with an air vent tube with a seat in the bottom thereof with a check ball loosely retained in the lower end portion of the tube by a pin. Since the details of such an air vent tube are well known in this art, they are not shown in the drawing. Furthermore, as is explained below, the components within a cylinder 38 may function as a vacuum breaker in which case an air 'vent tube is unnecessary.
- a cylinder 38 As is also shown in FIG. 2, the upper end of a cylinder 38 is vertically secured and sealed through tank 10 by means of threads 40. The lower end portion or output end portion of the cylinder 38 is also sealed into tank 10.
- the improved seating and resealing means of the present invention is contained within cylinder 38 and includes a plug 42 which is slidable within said cylinder.
- a seat 45 is formed on the bottom portion of cylinder 38.
- Plug 42 forms a hermetical seal with seat 45 when plug 42 is in the seated position.
- the plug 42 has a central axial bore 44 at its upper end for slidably receiving a valve stem 46.
- Also formed in plug 42 are bores 47 which communicate with a chamber 49 in plug 42.
- ports 50 Formed in the lower section of cylinder 38 are ports 50 which allow liquid contained in tank 10 to flow into cylinder 38 and through opening 51 in the bottom thereof when plug 42 is in an upper position. It should be noted that prior to commencement of the flushing cycle, plug 42 rests on a tapered shoulder or stop which forms the seat 45 on cylinder 38 (see FIG. 5).
- valve stem 46 On the bottom end of valve stem 46 is a fill valve 56 which is seatable in a fill valve seat 58 formed in plug 42.
- An O-ring 60 fitted on fill valve 56, provides a seal to prevent the passage of fluid through plug 42 when fill valve 56 is in the seated position.
- Diaphragm 61 is rigidly secured to valve stem 46 so that vertical movement of valve stem 46 causes vertical movement of diaphragm 61 and vice versa. Diaphragm 61 is slidably sealed to the cylinder 38 by a flexible rubber gasket 64.
- Diaphragm 61 is hermetically sealed to gasket 64 which is hermetically sealed to cylinder 38 to form a hermetically sealed chamber 66.
- diaphragm 61 may have the configuration of a cap or plate The function of diaphragm 61, however, may be accomplished by a piston. In this regard, it should be noted that the function of diaphragm 61 is to form a fluid-tight movable ceiling on chamber 66.
- a coil compression spring 48 is positioned within cylinder 38 so as to normally urge fill valve 56 in an upward direction.
- Coil compression spring 48 is positioned in the upper end of cylinder 38 about the valve stem 46 and is coaxial with it.
- the function of spring 48 is to prevent plug 42 from seating after the tank has been flushed.
- Spring 48 by preventing plug 42 from seating immediately after the tank has been flushed, allows water to pass through the tank outlet to reseal the bowl. A more detailed explanation of this function of spring 48 appears below.
- the force exerted by coil spring 48 is adjustable.
- the adjusting means includes a member 65 having screwed threads 67 which are engaged with the screw threads 69 on stem 46. Screw threads 67 and 69 enable member 65 to be turned and thus raise or lower member 65 to adjust the upward force exerted by spring member 48 with respect to stem 46. It should be noted that member 65 is inclusive of a stop or shoulder 73 for engaging and translating the upward force exerted by the upper end of spring 48.
- cylinder 38 Formed within cylinder 38 is a cylinder 71 for housing spring 48 and providing a fixed stop to enable spring 48 to urge upwardly against shoulder 73.
- valve stem 46 which protrudes through tank l has a push button 70 affixed thereto.
- tank may also include an air vent tube.
- the purpose of the air vent tube is to allow air into the tank, when required, and shut off the supply of air, at the appropriate time during the filling cycle, to permit liquid entering the tank to compress against air within the tank.
- the air vent tube also serves as a vacuum breaker to prevent liquid in bowl 12 from backing up into the tank when the tank is opened during the flush cycle.
- an air vent tube is advantageously accomplished by a fluid passageway within valve stem 46.
- fill valve 56 tends tocarry plug 42 upwardly due to the upward biasing action of spring 48.
- the action of spring 48 prevents plug 42 from fully seating on valve seat 45. Because plug 42 is not fully seated on seat 45, some of the liquid entering the tank, after the tank has been flushed, passes through ports 50 and out of the tank through outlet 51 on the bottom of cylinder 38. This passage of water through outlet 51 is desirable since it refills and reseals the bowl 12 after the bowl has been flushed. Some of the liquid entering the tank, however, will pass between rims 96 and the inner walls of cylinder 38 and enter chamber 66. This action will cause pressure to build up within chamber 66.
- an optional spring 112 may be included within chamber 66 toassist in seating plug 42. When included in cylinder 38, spring 112 exerts a downward force on plug 42 which is less than the upward force exerted by spring 48 against fill valve 46.
- filler tube 14 is connected to a source of water.
- check valve assembly 16 open to permit the water to flow through tube 14 into tank 10
- water rising in the tank will hermetically seal the tank which will continue to fill with water against the compression of air above the water and thus establish the equilibrium condition as represented by FIG. 5 of the drawing.
- An assembly for filling and discharging a liquid from a hermetically sealed tank of the type which includes a liquid inlet in fluid communication with the tank for introducing a liquid under pressure into the tank comprising a. a cylinder in fluid communication with the tank having an outlet in the lower portion thereof with an aperture in said cylinder to provide a passagesaid plug to stop fluid flow through the plug, said valve permitting the pressure within said cylinder to be decreased when said plug is seated in said seat in said cylinder and said valve is moved to a position where said upper opening is open by allowing fluid within the cylinder to flow through the plug and out the outlet,
- force means tending to seat said valve in said upper opening in said plug to allow pressure to increase within the tank when the tank is being filled with a liquid and to prevent liquid :in the tank from passing through said plug when said plug is seated in said seat in said cylinder,
- a pressure responsive diaphragm secured to said valve and movably sealed to said cylinder to form a fluid tight ceiling over that portion of liquid in the tank that is in said cylinder, said pressure responsive diaphragm enabling pressure to be exerted on said plug as liquid enters the: tank which pressure enables said plug to seat in said outlet against the force exerted by said force means as the tank is being filled witha liquid, and
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Sanitary Device For Flush Toilet (AREA)
- Safety Valves (AREA)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00281348A US3820754A (en) | 1972-08-17 | 1972-08-17 | Hydraulic flush tank with improved seating and resealing means |
CA177,806A CA1009801A (en) | 1972-08-17 | 1973-07-31 | Hydraulic flush tank with improved seating and resealing means |
AU58878/73A AU482613B2 (en) | 1972-08-17 | 1973-08-03 | Hydraulic flush tank with improved seating and resealing means |
DE19732340449 DE2340449A1 (de) | 1972-08-17 | 1973-08-09 | Hydraulischer spueltank mit einer verbesserten aufsetz- und wiederabdichteinrichtung |
NL7311008A NL7311008A (sv) | 1972-08-17 | 1973-08-09 | |
IT52006/73A IT990363B (it) | 1972-08-17 | 1973-08-13 | Perfezionamento nei dispositivi di cacciata per servizi igienico sanitari |
SE7311171A SE390429B (sv) | 1972-08-17 | 1973-08-16 | Hydraulsystem |
BE134618A BE803655A (fr) | 1972-08-17 | 1973-08-16 | Chasse d'eau |
BR6321/73A BR7306321D0 (pt) | 1972-08-17 | 1973-08-16 | Quantidade predeterminada de liquido aperfeicoado conjunto para encher um tanque selado com um |
GB3871073A GB1446722A (en) | 1972-08-17 | 1973-08-16 | Flushing assemblies |
FR7329864A FR2196424B1 (sv) | 1972-08-17 | 1973-08-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00281348A US3820754A (en) | 1972-08-17 | 1972-08-17 | Hydraulic flush tank with improved seating and resealing means |
Publications (1)
Publication Number | Publication Date |
---|---|
US3820754A true US3820754A (en) | 1974-06-28 |
Family
ID=23076902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00281348A Expired - Lifetime US3820754A (en) | 1972-08-17 | 1972-08-17 | Hydraulic flush tank with improved seating and resealing means |
Country Status (10)
Country | Link |
---|---|
US (1) | US3820754A (sv) |
BE (1) | BE803655A (sv) |
BR (1) | BR7306321D0 (sv) |
CA (1) | CA1009801A (sv) |
DE (1) | DE2340449A1 (sv) |
FR (1) | FR2196424B1 (sv) |
GB (1) | GB1446722A (sv) |
IT (1) | IT990363B (sv) |
NL (1) | NL7311008A (sv) |
SE (1) | SE390429B (sv) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176821A (en) * | 1976-03-05 | 1979-12-04 | Georg Rost & Sohne | Pilot-operated valve assembly |
US4233698A (en) * | 1977-01-28 | 1980-11-18 | Water Control Products/N.A., Inc. | Pressure flush tank for toilets |
US4955921A (en) * | 1989-11-30 | 1990-09-11 | American Standard Inc. | Flushing mechanism using phase change fluid |
US4984311A (en) * | 1989-11-30 | 1991-01-15 | American Standard Inc. | Flushing mechanism with low water consumption |
US5005226A (en) * | 1989-11-30 | 1991-04-09 | American Standard Inc. | Flushing mechanism with low water consumption |
US5046201A (en) * | 1990-04-16 | 1991-09-10 | Kohler Co. | Pressurized flush toilet tank |
GB2277108A (en) * | 1993-04-16 | 1994-10-19 | W C Technology Corp | Hydraulically controlled pressurized water closet flushing system |
US5363513A (en) * | 1993-09-22 | 1994-11-15 | Karl Blankenburg | Pressurized flushing toilet |
US5551466A (en) * | 1993-09-20 | 1996-09-03 | Caroma Industries Limited | Hydraulic valve |
US5553333A (en) * | 1993-09-30 | 1996-09-10 | Andersson; Sven E. | Pressurized water closet flushing system |
US6263519B1 (en) | 2000-04-07 | 2001-07-24 | Arichell Technologies, Inc. | Automatic tank-type flusher |
US6321395B1 (en) | 2000-11-20 | 2001-11-27 | Arichell Technologies, Inc. | Timed fluid-linked flush controller |
US6343387B1 (en) | 2000-12-06 | 2002-02-05 | W/C Technology Corporation | Volume control for a water closet |
US6360378B2 (en) * | 1993-04-08 | 2002-03-26 | W/C Technology Corporation | Pressurized water closet flushing system |
US6370707B1 (en) | 2001-01-16 | 2002-04-16 | Arichell Technologies, Inc. | Supply-line-sealed flush controller |
US6425145B1 (en) | 2001-09-21 | 2002-07-30 | Arichell Technologies, Inc. | Push button for metered flow |
US6453479B1 (en) | 2001-01-16 | 2002-09-24 | Arichell Technologies, Inc. | Flusher having consistent flush-valve-closure pressure |
US6457187B1 (en) | 2000-02-11 | 2002-10-01 | Pulf Water Systems Inc. | Pressurized water closet flushing system |
US20040021110A1 (en) * | 2000-04-06 | 2004-02-05 | Beh Thomas P. | Control valve for a water closet |
US20040025238A1 (en) * | 2000-11-20 | 2004-02-12 | Arichell Technologies, Inc. | Toilet flusher with novel valves and controls |
US6732997B2 (en) | 2000-04-06 | 2004-05-11 | The Chicago Faucet Company | Control valve for a water closet |
US20040194200A1 (en) * | 2003-04-04 | 2004-10-07 | Feiyu Li | Pressure assisted dual flush operating system |
US20050133754A1 (en) * | 2002-04-10 | 2005-06-23 | Parsons Natan E. | Toilet flusher for water tanks with novel valves and dispensers |
US20050150038A1 (en) * | 2004-01-08 | 2005-07-14 | Feiyu Li | Pressurized flush system |
US20050161625A1 (en) * | 2000-04-06 | 2005-07-28 | Beh Thomas P. | Adjustable metering actuator assembly for a water closet |
US7591027B2 (en) | 2007-02-22 | 2009-09-22 | Donald Ernest Scruggs | Flushette partial and full toilet flush devices |
US8756721B1 (en) * | 2011-03-29 | 2014-06-24 | Ryan Dewey | Toilet with built-in plunger |
US20180363281A1 (en) * | 2015-04-07 | 2018-12-20 | Frantisek Pancurák | A toilet bowl pressure flushing system with shock wave flushing |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6550076B1 (en) * | 2001-09-28 | 2003-04-22 | Sloan Valve Company | Valve assembly for a pressure flush system |
WO2009008690A2 (fr) * | 2007-07-06 | 2009-01-15 | Oleg Badyrov | Réservoir de rinçage de wc |
WO2009028975A1 (fr) * | 2007-08-27 | 2009-03-05 | Miekka, Alexandr Sergeevich | Dispositif sanitaire de toilette fonctionnant à haute pression |
-
1972
- 1972-08-17 US US00281348A patent/US3820754A/en not_active Expired - Lifetime
-
1973
- 1973-07-31 CA CA177,806A patent/CA1009801A/en not_active Expired
- 1973-08-09 NL NL7311008A patent/NL7311008A/xx not_active Application Discontinuation
- 1973-08-09 DE DE19732340449 patent/DE2340449A1/de not_active Ceased
- 1973-08-13 IT IT52006/73A patent/IT990363B/it active
- 1973-08-16 BR BR6321/73A patent/BR7306321D0/pt unknown
- 1973-08-16 GB GB3871073A patent/GB1446722A/en not_active Expired
- 1973-08-16 FR FR7329864A patent/FR2196424B1/fr not_active Expired
- 1973-08-16 SE SE7311171A patent/SE390429B/sv unknown
- 1973-08-16 BE BE134618A patent/BE803655A/xx not_active IP Right Cessation
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176821A (en) * | 1976-03-05 | 1979-12-04 | Georg Rost & Sohne | Pilot-operated valve assembly |
US4233698A (en) * | 1977-01-28 | 1980-11-18 | Water Control Products/N.A., Inc. | Pressure flush tank for toilets |
US4955921A (en) * | 1989-11-30 | 1990-09-11 | American Standard Inc. | Flushing mechanism using phase change fluid |
US4984311A (en) * | 1989-11-30 | 1991-01-15 | American Standard Inc. | Flushing mechanism with low water consumption |
US5005226A (en) * | 1989-11-30 | 1991-04-09 | American Standard Inc. | Flushing mechanism with low water consumption |
US5046201A (en) * | 1990-04-16 | 1991-09-10 | Kohler Co. | Pressurized flush toilet tank |
US6360378B2 (en) * | 1993-04-08 | 2002-03-26 | W/C Technology Corporation | Pressurized water closet flushing system |
GB2277108A (en) * | 1993-04-16 | 1994-10-19 | W C Technology Corp | Hydraulically controlled pressurized water closet flushing system |
GB2277108B (en) * | 1993-04-16 | 1996-10-30 | W C Technology Corp | Hydraulically controlled pressurized water closet flushing system |
US5551466A (en) * | 1993-09-20 | 1996-09-03 | Caroma Industries Limited | Hydraulic valve |
WO1995008678A1 (en) * | 1993-09-22 | 1995-03-30 | Karl Blankenburg | Pressurized flushing toilet |
US5363513A (en) * | 1993-09-22 | 1994-11-15 | Karl Blankenburg | Pressurized flushing toilet |
US5553333A (en) * | 1993-09-30 | 1996-09-10 | Andersson; Sven E. | Pressurized water closet flushing system |
US6457187B1 (en) | 2000-02-11 | 2002-10-01 | Pulf Water Systems Inc. | Pressurized water closet flushing system |
US20050161625A1 (en) * | 2000-04-06 | 2005-07-28 | Beh Thomas P. | Adjustable metering actuator assembly for a water closet |
US20040021110A1 (en) * | 2000-04-06 | 2004-02-05 | Beh Thomas P. | Control valve for a water closet |
US6732997B2 (en) | 2000-04-06 | 2004-05-11 | The Chicago Faucet Company | Control valve for a water closet |
US6896237B2 (en) | 2000-04-06 | 2005-05-24 | Geberit Technik Ag | Control valve for a water closet |
US6263519B1 (en) | 2000-04-07 | 2001-07-24 | Arichell Technologies, Inc. | Automatic tank-type flusher |
US6321395B1 (en) | 2000-11-20 | 2001-11-27 | Arichell Technologies, Inc. | Timed fluid-linked flush controller |
US20040025238A1 (en) * | 2000-11-20 | 2004-02-12 | Arichell Technologies, Inc. | Toilet flusher with novel valves and controls |
US6934976B2 (en) | 2000-11-20 | 2005-08-30 | Arichell Technologies, Inc. | Toilet flusher with novel valves and controls |
US6343387B1 (en) | 2000-12-06 | 2002-02-05 | W/C Technology Corporation | Volume control for a water closet |
US6370707B1 (en) | 2001-01-16 | 2002-04-16 | Arichell Technologies, Inc. | Supply-line-sealed flush controller |
US6453479B1 (en) | 2001-01-16 | 2002-09-24 | Arichell Technologies, Inc. | Flusher having consistent flush-valve-closure pressure |
US6425145B1 (en) | 2001-09-21 | 2002-07-30 | Arichell Technologies, Inc. | Push button for metered flow |
US20050133754A1 (en) * | 2002-04-10 | 2005-06-23 | Parsons Natan E. | Toilet flusher for water tanks with novel valves and dispensers |
US7562399B2 (en) | 2002-04-10 | 2009-07-21 | Arichell Technologies | Toilet flusher for water tanks with novel valves and dispensers |
US20040194200A1 (en) * | 2003-04-04 | 2004-10-07 | Feiyu Li | Pressure assisted dual flush operating system |
US7010816B2 (en) | 2003-04-04 | 2006-03-14 | Feiyu Li | Pressure assisted dual flush operating system |
US20050150038A1 (en) * | 2004-01-08 | 2005-07-14 | Feiyu Li | Pressurized flush system |
US7299508B2 (en) | 2004-01-08 | 2007-11-27 | Feiyu Li | Pressurized flush system |
US7591027B2 (en) | 2007-02-22 | 2009-09-22 | Donald Ernest Scruggs | Flushette partial and full toilet flush devices |
USRE44783E1 (en) | 2007-02-22 | 2014-03-04 | Donald E. Scruggs | Flushette partial and full toilet flush devices |
US8756721B1 (en) * | 2011-03-29 | 2014-06-24 | Ryan Dewey | Toilet with built-in plunger |
US20180363281A1 (en) * | 2015-04-07 | 2018-12-20 | Frantisek Pancurák | A toilet bowl pressure flushing system with shock wave flushing |
US10941550B2 (en) * | 2015-04-07 | 2021-03-09 | Swiss Aqua Technologies Ag | Toilet bowl pressure flushing system with shock wave flushing |
Also Published As
Publication number | Publication date |
---|---|
BR7306321D0 (pt) | 1974-08-29 |
SE390429B (sv) | 1976-12-20 |
CA1009801A (en) | 1977-05-10 |
FR2196424B1 (sv) | 1980-04-04 |
NL7311008A (sv) | 1974-02-19 |
GB1446722A (en) | 1976-08-18 |
AU5887873A (en) | 1975-02-06 |
FR2196424A1 (sv) | 1974-03-15 |
IT990363B (it) | 1975-06-20 |
DE2340449A1 (de) | 1974-02-28 |
BE803655A (fr) | 1974-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: WATER CONTROL PRODUCTS, INC., 1100 OWENDALE, TROY, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CITIZENS NATIONAL BANK OF CHEBOYGAN;REEL/FRAME:003886/0008 Effective date: 19810720 |
|
AS | Assignment |
Owner name: MOLMEC, INC., 4205 MARTIN ROAD, WALLED LAKE, MI A Free format text: MORTGAGE;ASSIGNOR:WATER CONTROL PRODUCTS, INC., A CORP. OF DE;REEL/FRAME:003915/0843 Effective date: 19810831 |
|
AS | Assignment |
Owner name: WATER CONTROL PRODUCTS, INC., A DE CORP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. RELEASE OF SECURITY INTEREST IN SAID PATENTS RECORDED AT REEL 3915 FRAMES 843-846.;ASSIGNOR:MOLMEC, INC.;REEL/FRAME:004658/0683 Effective date: 19861223 |