Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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 |
| 7325747 | Flow compensated control valve A fluid control system includes a valve and a restrictor. The valve is configured to regulate the proportion at which a first fluid and a second fluid are mixed together. Based on the pressure drop across the restrictor, the valve further regulates the overall flow ... | 02/05/2008 |
| 7168628 | Control valve monitoring The present invention provides a device for monitoring the operation of a control valve (1), which is adapted to supply fluid at a predetermined temperature via an outlet (4). The device includes a sensor (10) adapted to be coupled to the outlet... | 01/30/2007 |
| 7000850 | Anti-scald water valve assembly An anti-scald water valve assembly comprises a body including a passage for water, a valve provided in the passage for shutting off the passage, and an electro-mechanical actuator to cause closing of the valve. A temperature sensor senses the temperature of water ru... | 02/21/2006 |
| 6929188 | Variable flow fluid tempering valve A tempering valve is connected to hot and cold water supplies. The tempering valve has first and second thermal valves, each of which mixes hot and cold water flows to produce a tempered flow at a selected temperature. the mixed flow from the first thermal valve byp... | 08/16/2005 |
| 6910501 | In-line screens for thermostatic valves A thermostatic valve for mixing hot water and cold water includes a valve body defining a first inlet, a second inlet, a mixing chamber, a first passageway between the first inlet and the mixing chamber, and a second passageway between the second inlet and the mixin... | 06/28/2005 |
| 6823892 | Automatic valve for the stabilization of a thermostatic mixing device A valve installed at the inlet of a thermostatic mixing device for automatically stabilizing the operation of the thermostatic device by maintaining the pressure within the thermostatic mixing device close to the water supply pressure, thereby making the thermostati... | 11/30/2004 |
| 6769480 | Torque balancing apparatus and method for an automotive temperature control system An apparatus (100) controls the temperature of air flow from a temperature control system (10) The apparatus (100) includes a blend door (150), an output gear (140), and a biasing mechanism (124) The biasing mechanism (12... | 08/03/2004 |
| 6708895 | Flow rate regulator to reduce variation in temperature of water drawn from a mixing device A new use of a flow rate regulating device (5, 6) is disclosed whose feature consists of the fact that, when inserted in a water pipeline, it permits the passage of a flow of water having a substantially constant flow rate and predetermined in keeping with th... | 03/23/2004 |
| 6705534 | Shower control system A shower control system for facilitating a user's control of the temperature and pressure of water used during a shower. The shower control system includes a shower assembly having a pair of inlet pipes. A first of the inlet pipes is designed for being in fluid comm... | 03/16/2004 |
| 6065682 | Thermostatic valve In connection with a thermostatic valve, in particular for regulating a coolant supply to a transmission fluid cooler, two valves are provided, which are respectively adjustable by means of thermostatic operating elements. Two thermostatic operating eleme... | 05/23/2000 |
| 5979776 | Water flow and temperature controller for a bathtub faucet A temperature and flow controller for a bath tub or shower is disclosed. The device includes a panel that replaces or surrounds the standard bath tub water valves. Within the panel is a control assembly in communication with temperature sensors in the sho... | 11/09/1999 |
| 5503183 | Hot-water thermoregulating valve A hot-water thermoregulating valve is disclosed including a hot-water supply cap; a cold-water supply cap; a main body located between the hot-water supply cap and cold-water supply cap; first and second disks formed with a circular hole on the center, re... | 04/02/1996 |
| 5255844 | Water temperature control for automatic washers A water temperature control system for achieving one of a plurality of wash water temperatures for a washing machine having a hot water valve, a cold water valve and an inlet conduit for carrying a combined supply of water from the hot and cold water valv... | 10/26/1993 |
| 5215251 | Water controller A water control includes three water sources which are plumbed into a single supply pipe where a flow meter and temperature sensor is used by a computer to monitor the water flowing therethrough. A valve set controls the flow of water from each water sour... | 06/01/1993 |
| 4955535 | Automatically operating valve for regulating water flow and faucet provided with said valve An automatically operating valve for regulating water flow, especially a mixing valve for automatically mixing hot water and cold water to obtain a mixed water of a desired temperature is characterized by employing piezoelectric actuators for operating va... | 09/11/1990 |
| 4921162 | Electrically controlled fluid mixing fixture, especially for mixing hot and cold water In the fluid mixing fixture, a displacement body and a tubular shell, which coaxially encloses the displacement body, are arranged at an inflow element. A temperature measuring element, such as a nickel wire which is covered by a plastic jacket, is wound ... | 05/01/1990 |
| 4863098 | Flow modulating control valve assembly A pilot operated flow modulating control valve assembly with a pilot valve to initiate opening and closing of a main control valve, and a secondary valve for separately controlling pressure across the control valve to achieve its modulated positions.... | 09/05/1989 |
| 4711393 | Water temperature control device A water temperature control device wherein the relative inflows of hot and cold water into a mixing chamber and then to an outlet are controlled by a mercury filled temperature sensing element, the volume expansion or contraction of the mercury activating... | 12/08/1987 |
| 4610393 | Cold and hot water mixer tap with ceramic plates controlled by means of a thermostat A body (1) presenting inlet openings (2,3) for cold water and hot water and an outlet opening (4) for the mixed water, has a device for regulating the flowrate of at least one of the incoming streams of water and of the mixture of water (12, 13, 14, 15, 1... | 09/09/1986 |
| 4558817 | Electronically controlled mixing valve In a pressure compensated mixing valve, the hot and cold water lines each include electrically actuated valves. Each valve has a movable valve rod coupled to a valve cone via a deformable member. The deformable members are acted upon such that as water pr... | 12/17/1985 |
| 4444357 | Differing-temperature liquid-mixing apparatus and method using pulsed, duty-cycle temperature control A method and apparatus for producing from two different liquid input streams which are at different temperatures, a single output stream with a selectable, low-thermal-noise, regulated temperature which is intermediate the input streams' temperatures. The... | 04/24/1984 |
| 4406398 | Fluid temperature blending control The described invention embodies a plumbing fixture device for the determination and display of exacting control adjustments necessary to achieve a predetermined fluid temperature blend. The device of the invention employs an apparatus constructed of a se... | 09/27/1983 |
| 4406401 | Water temperature control system for a washing machine A microprocessor controlled water temperature control system for a washing machine, such as a clothes or dish washer, is disclosed. Average water fill temperature is calculated periodically and, with one water valve maintained in an on condition, the othe... | 09/27/1983 |
| 4383551 | Anti-hammer device for pulsed liquid-merging system An anti-hammer device for use in a two-line liquid-mixing system, where liquids from the two lines are pulse-blended and merged into a single output stream. The device includes a housing divided by a flexible diaphragm into two liquid-receiving plenums, e... | 05/17/1983 |
| 4381073 | Thermostatically controlled cold and hot water mixer A thermostatically controlled mixer of cold and hot water is disclosed which includes separate assemblies for controlling the temperature of the mixed water and the delivered volume of the mixed water. The assemblies include pairs of ceramic discs sealing... | 04/26/1983 |
