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.
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| Number | Title | Issue Date |
| 7308904 | Electric gear motor drive for switching valve Electric drive for a switching valve, the switching valve having such a drive, and a regenerative thermal oxidizer including the switching valve and drive system. The electric drive system allows for the starting and stopping of the rotation of a rotary valve with a... | 12/18/2007 |
| 7252248 | Kitchen aerator having a flow compensator A faucet aerator incorporating a flow compensator in order to allow higher flow rates of water at lower water pressures through the faucet aerator, including a faucet housing having an annular flow channel configured along a longitudinal axis through the faucet hous... | 08/07/2007 |
| 7124777 | Reversing valve with flowsplitter Provided is a reversing valve for reversing flow in a refrigeration system. The reversing valve includes a valve body having first, second, third, and fourth ports disposed into the valve body. A valve member inside the valve body can be selectively moved between a ... | 10/24/2006 |
| 7036521 | Air conserving slide valve A slide type valve (V) for regulating a gas generating system (10) that has at least a first and a second gas concentrating bed unit (12, 14) includes an outer body (120) with a slide face (106) having at least three open ports (130, 1... | 05/02/2006 |
| 6152163 | Switching valve for multi-chamber adsorbent air and gas fractionation system A unique switching valve for use with a multi-chamber adsorbent air and gas fractionation system for controlling the flow of fluid which comprises a valve housing including an inlet port, two outlet ports and an exhaust port and first valve and second val... | 11/28/2000 |
| 6129139 | Consolidated poppet valve assembly Anti-leak two-port and three-port poppet valves for a regenerative thermal oxidizer in which a gas such as contaminated air is first passed through a hot heat-exchange bed and into a communicating high temperature oxidation (combustion) chamber or zone, a... | 10/10/2000 |
| 6116264 | Dual damper diverter A valving system for diverting fluids from one location to another. The valving system includes a valve housing and two or more dampers. The dampers are rotatably coupled to one or more shafts and are designed to move in a synchronized manner such that wh... | 09/12/2000 |
| 6039927 | Valve system for regenerative thermal oxidizers A two chamber regenerative thermal oxidizer has a pair of poppet valves actuated by an eccentric mechanical drive assembly having a single drive shaft. Gas flow through the RTO is reversed by the simultaneous opening and closing of the poppet valves. Dece... | 03/21/2000 |
| 5997277 | Method and a device for recovery of energy from media containing combustible substances even at low concentration This invention relates to a method and device for recovery of energy from a medium containing combustible substances even at low concentrations. The method is characterized by raising the temperature of the medium in a regenerative combustor such as a rev... | 12/07/1999 |
| 5888063 | Method and apparatus for quick purging a multiple bed regenerative fume incinerator A method of quick purging beds of a regenerative fume incinerator which is practically applicable for use in 2, 3 and 4 bed incinerators. For a very short purge period near the end of an operating time cycle, the bed being switched from receiving impure g... | 03/30/1999 |
| 5775897 | Gaseous flow reversing valve with distributed gas flow A gaseous flow reversing system is disclosed for use with a regenerative furnace. The reversing system includes a combustion air inlet unit for receiving combustion air, and a valve unit. The valve unit is slidable between first and second positions with ... | 07/07/1998 |
| 5692893 | Rotary valve for 2-bed regenerative fume incinerator A rotary valve suitable for a 2-bed regenerative fume incinerator which provides for purging of the beds and uninterrupted inflow and outflow during operation of the incinerator including the time intervals in which the valve is rotated from one position ... | 12/02/1997 |
| 5540584 | Valve cam actuation system for regenerative thermal oxidizer An inventive cam actuation structure provides a separate cam member for opening each of the valves in a regenerative thermal oxidizer. The separate cam structures allow the arrangement of the flow passages in any desired relationship relative to the other... | 07/30/1996 |
| 5309851 | Regenerative thermal oxidizer with gate manifold pressurization The present invention involves a regenerative thermal oxidation apparatus for purifying gases by thermal oxidation and for exchange of heat between inleting and outleting gases. The apparatus has a plurality of thermal chamber units, each such unit having... | 05/10/1994 |
| 5293827 | Regenerative thermal oxidizer with gate manifolds including purges The present invention is directed to an improved regenerative thermal oxidizer and a method of purifying gases by raising gases to their auto ignition temperature and by exchanging heat by inleting and outleting gases. The reactor has at least three regen... | 03/15/1994 |
| 5279235 | Valve actuation mechanism for incinerator A unique valve mechanism for opening and closing inlet, outlet, and purge valves in a regenerative incinerator is disclosed. The valves are mechanically opened and closed by a cam arrangement which insures proper timing, and optimal volume flow through th... | 01/18/1994 |
| 5134945 | Regenerative thermal oxidizer with gate manifold system The present invention is directed to a regenerative thermal oxidizer apparatus and a method for purifying gases by thermal oxidation and by exchange of heat by inleting and outleting gases. The oxidizer has at least three regenerative thermal chamber unit... | 08/04/1992 |
| 5129332 | Valve actuation mechanism for incinerator A unique valve mechanism for opening and closing inlet, outlet, and purge valves in a regenerative incinerator is disclosed. The valves are mechanically opened and closed by a cam arrangement which insures proper timing, and optimal volume flow through th... | 07/14/1992 |
| 4909307 | Regenerative bed heat exchanger A heat exchanger has two regenerative beds and two valves connected to the beds for controlling the flow through them. Each valve has two ports connected to the beds and two other ports. The valves are mechanically linked and actuated together. The valves... | 03/20/1990 |
| 4558731 | Control device for medium flows for regenerative heat exchanger The present invention is concerned with a control device for medium flows for a regenerative heat exchanger. The device consists of a cell (7) divided into compartments (8) and acting as a heat exchanger, and at the ends of the cell, there are control mea... | 12/17/1985 |
| 4470806 | Regenerative incinerators A regenerative incinerator comprising at least two vertical heat exchanger chambers each having horizontal grates in an intermediate region thereof, a combustion chamber above the heat exchanger chambers connected at its bottom side to the top side of the... | 09/11/1984 |
| 4126419 | Combustion device for burning waste gases containing combustible and noxious matters A combustion device comprising a plurality of regenerative units formed by a plurality of separate radially extending compartments each containing a plurality of corrugated highly conductive metal plates compressed together with the corrugations in the ad... | 11/21/1978 |
| 3985149 | Reversing flow valve Valve structure for reversing gas flow comprising a housing containing a pair of disposed cylinder chambers, a pair of disposed manifold chambers, inlet and outlet means provided in each pair of said cylinder and manifold chambers, piston means provided i... | 10/12/1976 |
