In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 5129576 | Thermostatic pressure balanced valve assembly A mixing valve includes the volume control valve, a pressure proportioning valve, and a thermostatic valve assembly within a single modular housing. The housing is rotatably mounted in a valve body. The housing houses the proportioning valve and the therm... | 07/14/1992 |
| 5025983 | Mixing valve A mixing valve includes in a valve case a hot water chamber, a water chamber, a mixing chamber, a chamber communicating to a shower device and a chamber communicating to a bath at one end of the valve case is equipped a thermo handle for controlling a rat... | 06/25/1991 |
| 5011074 | Thermostatic mixing valve with thermostat failure compensation A thermally controlled mixing valve assembly includes a valve body having a hot fluid inlet, a cold fluid inlet, a fluid mixing chamber, and a fluid outlet in communication with the mixing chamber. A thermally responsive control member, or thermostat, is ... | 04/30/1991 |
| 4863097 | Thermostatic mixing valve This invention relates to a thermostatic mixing valve that includes a housing, temperature control valves in the housing that have axially spaced cold and warm water regulating bases and a valve element for cooperating with the above valve bases to revers... | 09/05/1989 |
| 4760953 | Thermostatic mixer devices in particular for distributing water A fluid mixer device comprising a body (110) having an internal chamber (112) into which there open out at least one hot fluid inlet orifice (116), at least one cold fluid inlet orifice (117), and at least one outlet orifice (124) for the mixture of hot a... | 08/02/1988 |
| 4653687 | Mixing valve To provide a thermal cooling system in applications having a pumped fluid cooling loop with stringent reliability requirements, a mixing valve has a housing defining a valve chamber provided with a pair of inlet openings and an outlet opening. A valve sup... | 03/31/1987 |
| 4607788 | Mixing valve Disclosed is a valve for mixing hot and cold water consisting of a hollow body closed at one end and including an internal sleeve located by two annular flanges that define chambers between the sleeve and the body communicating, respectively, with hot and... | 08/26/1986 |
| 4509677 | Mixing valve Disclosed is a valve for mixing hot and cold water and providing for accurate outlet temperature control to within b1;1° C. Valve consists of a hollow body closed at one end and including an internal sleeve located by two annular flanges that define ch... | 04/09/1985 |
| 4487362 | Fixture for thermostatically mixing hot and cold water A fixture for thermostatically mixing hot and cold water from hot- and cold-water pipes. The diameters of the annular axes of seals provided on both ends of a control valve are equal to the inside diameter of the valve guide for the control valve. The spa... | 12/11/1984 |
| 4249695 | Thermally actuated modulating valve, and assemblies and systems utilizing the same for providing temperature controlled heated water A thermally actuated modulating valve preferably for fail safe energy conservation systems includes a valve body having, a main inlet for cold source water, an outlet for heated water, and a fluid transfer chamber connected for delivering heated water to ... | 02/10/1981 |
| 4185771 | Water mixing valve with temperature regulation, temperature setting and volume control In a cylindrical casing, a temperature regulation system shifts a valve sleeve body axially between valve seats of the cold and hot water inlets and a flow control lever mounted on screw threads propels a valve seat body mounted as a piston within the cas... | 01/29/1980 |
| 4181252 | Thermostatically controlled mixing valve for sanitary devices This invention refers to a thermostatically controlled mixing valve for a sanitary installation. The mixing valve is provided with a chamber for mixing the hot and cold water. The mixing chamber has disposed therein, temperature sensing means which automa... | 01/01/1980 |
| 4165034 | Fluid mixing valve construction and method of making the same A fluid mixing valve construction having a housing provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet and with a valve member operated by a condition responsive unit for controlling the valve seats in accordan... | 08/21/1979 |
| 4164321 | Thermostatic mixing valve for two fluids An extremely compact, simple and reliable thermostatically control valve for mixing two fluids of different temperatures comprises means for manual adjustment of volume and temperature of the mixed fluids leaving the valve, wherein said adjustment means a... | 08/14/1979 |
| 4121761 | Thermostatically controlled mixing valve for sanitary devices This invention refers to a thermostatically controlled mixing valve for a sanitary installation. The mixing valve is provided with a chamber for mixing the hot and cold water. The mixing chamber has disposed therein, temperature sensing means which automa... | 10/24/1978 |
| 4082219 | Fluid mixing valve construction and method of making the same A fluid mixing valve construction having a housing provided with a pair of inlets respectively interconnected by a pair of valve seats to an outlet with a valve member operated by a condition responsive unit for controlling the valve seats in accordance w... | 04/04/1978 |
| 4029256 | Thermostatic mixer valve This valve has a body, in which a cartridge is slidably mounted under the action of a flow rate regulation control member, the inlets for hot water and cold water radially disposed in the lateral wall of the cartridge. According to the invention, this val... | 06/14/1977 |
| 3955759 | Thermostatic mixer for hydraulic systems A thermostatic mixer wherein the apertures intended for inlet of warm water are so conditioned as to oppose to the flow a smaller resistance than the apertures intended for inlet of cold water, thus causing an asymmetric operation of the thermostatic mixe... | 05/11/1976 |