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| Number | Title | Issue Date |
| 7318451 | Flapper valves with spring tabs A flapper valve assembly has a valve plate for attachment to a fluid device, such as a heat exchanger. The valve plate has a fluid port for permitting intermittent flow to or from a flow chamber in the fluid device. A resilient flapper covers the fluid port and has ... | 01/15/2008 |
| 7222641 | Snap-in flapper valve assembly A flapper valve snaps into position in an inlet or outlet manifold of a heat exchanger to provide by-pass flow in cold flow or pressure spike conditions. The flapper valve includes a cradle having opposed spring fingers for retaining the valve in position. The cradl... | 05/29/2007 |
| 7205533 | Cooling apparatus A cooling apparatus (10) for cooling a detector (52), the cooling apparatus including an inner and an outer countercurrent heat exchanger (12 and 14, respectively) for a first and a second gas in a thermally insulating housing (16)... | 04/17/2007 |
| 6905792 | Cooling system and cooling process of fuel cell The present invention provides a cooling system of fuel cell, which solves the gas biting noise problem by trapping bubble in a coolant, gives protection to a stack (MEA) and the membrane of a humidifier by regulating the coolant pressure of fuel cell and improves t... | 06/14/2005 |
| 6167956 | Aftercooler having bypass passage integrally formed therewith An aftercooler for cooling a compressed fluid exiting from a compressor, the aftercooler including a radiator unit for receiving the compressed fluid exiting from the compressor and for cooling the compressed fluid, the radiator unit having an inlet for r... | 01/02/2001 |
| 5666807 | Oil processor circuit Oil coolers are commonly used in hydraulic systems for maintaining oil below a preselected temperature under normal operating conditions. The subject oil cooler circuit includes a pilot operated valve disposed in a conduit connecting the hydraulic system ... | 09/16/1997 |
| 5137079 | Closed circuit cooling system A cooling fluid is circulated around a closed circuit including a heat source, for example by a pump. The system includes a heat exchanger for removing heat from the fluid. Valve means are provided which are operated by changes in volume of the cooling fl... | 08/11/1992 |
| 4637454 | Wide range temperature control system for fluids A wide range temperature control system for controlling and maintaining the temperature of a first cooling liquid in an indirect heat exchanger at a predetermined setpoint within a wide range of temperatures is disclosed. The system proportions flow of a ... | 01/20/1987 |
| 4566530 | Pressure operated shuttle valve A valve assembly in which a longitudinally shiftable shuttle or spool valve is positioned by varying the fluid pressure in a pressure chamber at one end thereof. Solenoid valves open and close in a pulsed response to a changing fluid condition, the flow o... | 01/28/1986 |
| 4515307 | Hot water control system A hot water control system, for providing unlimited domestic hot water upon demand and for conserving fuel, comprises first temperature control means responsive to temperature in the input conduit to a boiler for controlling the firing of the boiler, and ... | 05/07/1985 |
| 4194357 | Auto ignition temperature control system A temperature control system safely and efficiently protects critical aircraft surfaces from reaching fuel auto ignition temperature with cooling provided by a relatively small and light heat exchanger.... | 03/25/1980 |
| 4067382 | Heat reclaim system A heat reclaim system for reclaiming waste heat from a material processing line by bleeding a portion of the heated air from one or more points on the material heat processing line and directing such heated air through an economizer containing a bank of s... | 01/10/1978 |
