Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8122904 | Anti siphon tank inlet The present invention provides a fluid tank inlet assembly having an inlet pipe extending from a mounting structure located at the proximal end of the pipe. A float valve assembly is disposed beyond the distal end of the inlet pipe and includes a float member. An ob... | 02/28/2012 |
| 8033291 | Magnetically activated cut-off valve assembly A cut-off valve assembly for use with a toilet tank, includes a float within the toilet tank, a water retaining float guide within the toilet tank which allows the vertical travel of the float, the water retaining float guide having weep holes below the lowest trave... | 10/11/2011 |
| 6966334 | Float valve for a christmas tree watering system The float valve has a water inlet, a perforated bottom surface and a lift valve mounted between the water inlet and the bottom surface. A float and a rocker arm are used to raise and lower the disc of the lift valve in response to a water level inside the housing. T... | 11/22/2005 |
| 6895990 | Water heater fail safe apparatus Apparatus for automatically shutting off the water supply to a leaking water heater includes a water collecting tray positionable beneath the heater, a valve mechanism attachable to the tray, a float mechanism, and an action arm interactive between the float mechani... | 05/24/2005 |
| 6874529 | Level limit valve The invention concerns a level limit valve for the fuel tank of a vehicle. Such valves serve the purpose, that upon the filling of the fuel tank, the filled quantity of the fuel is limited. The proposed level limit valve possesses a valve body 1 which can be ... | 04/05/2005 |
| 6679286 | Ball tap with a water level switch A compact ball tap with 1 a water level switch which comprises a guide standpipe 5 vertically arranged in a tank T, a float 6 slidably installed on the guide standpipe 5, a valve 3, a lever 4 controlling an open-close action of the valve 3 connected with ... | 01/20/2004 |
| 6619312 | Flow control mechanism for an eaves trough downspout A flow control mechanism for an eaves trough downspout has a primary flow path through a housing from an inlet to a first outlet. A tubular arm extends from the housing and has a first end is in fluid communication with a second outlet. A deflector is piv... | 09/16/2003 |
| 6615863 | Toilet fill valve tank isolation A toilet fill valve (16) includes a fill tube (21) which is mounted through a hole (14) in a toilet tank wall (12), having isolating means for isolating the fill tube (21) from direct contact with the toilet tank wall (12), as well as isolating water-born... | 09/09/2003 |
| 6550488 | Hyperwash dishwasher An efficient residential dishwasher is disclosed. The residential dishwasher comprises a washing chamber, a rack within the washing chamber for holding dishes, a water tank for holding hot water to be used to clean dishes located on the rack, and at least... | 04/22/2003 |
| 6523562 | Plumbing flood control system A control system for stopping a plumbing-related flooding situation in a building includes at least one sensor for accumulating water and producing a low voltage electrical control signal when sufficient water is accumulated. An actuating system receives ... | 02/25/2003 |
| 6354326 | Toilet fill valve with improved noise abatement A toilet fill valve includes a housing defining a water fill passage and a water inlet. A valve disposed in the passage divides the housing into a upstream portion and a downstream portion. A pressure regulator vertically oriented in the downstream portio... | 03/12/2002 |
| 6253785 | Automatic leak shutoff device A water supply shutoff valve system is used with a fluid storage tank, such as a hot water heater, to automatically shut off the water supply to the storage tank as a result of leak containment which in turn causes a magnetic float to rise and consequentl... | 07/03/2001 |
| 6202676 | Magnetic liquid control for boiler feedwater receivers A liquid level control unit having a permanent magnet mechanism for translating displacements of a displaces element in the liquid of a container to an actuator device that actuates a control system for a regulated device such as a supply water control va... | 03/20/2001 |
| 5971009 | Dual containment assembly A containment assembly for storing a liquid substance above a ground support surface has an inner tank for receiving and storing the liquid and an outer tank surrounding the inner tank and forming a first air space therebetween for trapping any of the liq... | 10/26/1999 |
| 5937455 | Electrically operated toilet water inlet valve system having a variable fill level An electrically operated solenoid valve for use on a flush toilet tank, and capable of variable adjustment. This system comprises a float switch mounted on a calibrated bracket secured to a tank, such that the float for the float switch is mounted within ... | 08/17/1999 |
| 5887614 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 03/30/1999 |
| 5862830 | Water replenishing plug for a battery containing a liquid electrolyte A water replenishment plug for batteries containing a liquid electrolyte has a push-in plug housing (11) which is made complementary at the outside to an upper battery housing opening. Furthermore, a water chamber (13) is provided at the push-in plug hous... | 01/26/1999 |
| 5662460 | Downhole pneumatic pump with variable bouyant actuator A pneumatic pump having a variable buoyant actuator to substantially reduce the volume of a float, thereby increasing the fluid capacity for any pump of a given size. The pump includes an elongated housing, a sealable fluid entry aperture and a pipe commu... | 09/02/1997 |
| 5618410 | Automatically draining vacuum apparatus An automatically draining vacuum apparatus for collecting a fluid to be vacuumed. The vacuum apparatus includes a vacuum generating source which generates a suction force and a tank for holding the fluid to be vacuumed. The tank includes a vacuum port, an... | 04/08/1997 |
| 5567283 | Caustic concentration regulator for chlorine generators An electrolytic chlorine gas generating system is disclosed. The system includes an electrolytic cell generating the chlorine gas, a brine tank supplying saturated brine to the anode compartment of the cell, and an acid feed tank containing hydrochloric a... | 10/22/1996 |
| 5544685 | Fill controller for liquified gas container and apparatus for filling tank using same An electronic sensor and fill controller for use with a refillable liquid gas container is disclosed. The present invention in broadest terms comprises a valve body for the container, a shaft extending from the valve body into the container, an electronic... | 08/13/1996 |
| 5518024 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 05/21/1996 |
| 5456409 | Method and device for maintaining a fluid at a working pressure in a substantially closed fluid circulation system A method and device for maintaining a fluid at a working pressure in a substantially closed fluid circulation system wherein the temperature of the fluid can vary and which is preferably deaerated continuously. The maintenance of a working pressure is rea... | 10/10/1995 |
| 5406993 | Safety tank apparatus for liquid storage A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure including an inner metallic tank; an outer metallic tank p... | 04/18/1995 |
| 5365969 | Float with skirt to prevent leakage due to oversudsing An improved float to prevent over-filling of a dishwashing machine including a cylindrical main float body, a skirt attached to the main float body and extending outwardly and downwardly therefrom, and a float stem. The main float body includes a lower po... | 11/22/1994 |
| 5309937 | Float valve for filling systems, in particular, for filling electric traction batteries The invention relates to a float valve (3) for container filling systems, especially for electrical traction battery filling systems, comprising a valve housing (10) that accommodates a valve chamber (11) and a valve head (31), the valve chamber being pro... | 05/10/1994 |
| 5309939 | Safety device for water-conducting household appliances A water-conducting household appliance includes a liquid container having a static content level, a fill control device, a cycle control unit, an inflow valve to be opened by the cycle control unit and closed by at least one of the fill control device and... | 05/10/1994 |
| 5284191 | Safety tank apparatus for liquid storage A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure including an inner metallic tank; an outer metallic tank p... | 02/08/1994 |
| 5265656 | Safety tank apparatus for liquid storage having fire resistant construction A safety apparatus for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn comprising a structure including first and second inner metallic tanks, and an outer metallic housing pr... | 11/30/1993 |
| 5246045 | Automatic refrigerant tank volume fill control apparatus The present invention is an automatic volume fill control apparatus to be used in conjunction with a recovering device which is operable upon being electrically connected to an electrical power source. The automatic control apparatus comprises a control u... | 09/21/1993 |
| 5146947 | Condensate drainage for gaseous fuel fired condensation boilers A condensate drainage device employed as a safety device for preventing the discharge gases produced by combustion from flowing out through the condensate drainage conduit, in condensation boiler apparatuses.... | 09/15/1992 |
| 5137064 | Safety tank apparatus for liquid storage Safety tank apparatus for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which liquid may be withdrawn, including: tank structure including an inner metallic tank, and an outer metallic tank protectively rece... | 08/11/1992 |
| 5090443 | Fluid level control float valve A valve for controlling the level of fluids in basins, such as stands for cut trees, aquariums, or hydroponic plant basins. The valve 6 includes a rigid fluid conduit 26 passing through the wall of a float chamber 16, in order to transmit fluid into a fle... | 02/25/1992 |
| 5072751 | Valve assembly A valve assembly includes a tubular member, a hollow case connected to an open end of the tubular member, a linkage having a first end pivotally connected to the hollow case, a float connected to a second end of the linkage, and a control valve member mov... | 12/17/1991 |
| 5067517 | Quantitative liquid level controlling device A quantitative liquid level controlling device, comprising a housing having a socket at the top for attaching to a water supply pipe, and a control rod with a gravity pendant suspending therefrom through a cord for adjusting the desired water level. The g... | 11/26/1991 |
| 5025827 | Structure of fluid level controller of piping type A fluid level controller flexibly set up according to the number of level steps to be controlled and the pitch between such level steps, which comprises a plurality of joint pipes connected in series to form a pipe assembly; a ring-shaped magnetic floatin... | 06/25/1991 |
| 5018550 | Dishwasher overfill protection device A dishwasher is provided with an improved apparatus for protecting the tub from being overfilled in the form of a float having a float stem that is automatically captured upon insertion through a passage in the tub bottom wall such that the float will be ... | 05/28/1991 |
| 5005615 | Safety tank apparatus for liquid storage A safety tank apparatus is provided for installation to receive and store a liquid hydrocarbon or hydrocarbons, or the like, and from which the liquid may be withdrawn. It comprises tank structure including an inner metallic tank; an outer metallic tank p... | 04/09/1991 |
| 4909274 | Valve apparatus Disclosed is a valve apparatus having water inlet and outlet pipes, means for maintaining water which may have ruptured from a water storage tank in a water containment area, a float within the water containment area, a float-rod attached to the float whi... | 03/20/1990 |
| 4903724 | Liquid level control system A liquid level control system for automatically stopping the flow of water in a bathtub. The system includes an adjustable level control mechanism and a flow control device. The control mechanism comprises a float suspended from a flexible chain and slidi... | 02/27/1990 |
