Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 6997250 | Heat exchanger with flow director Heat exchangers, constructed in accordance with principles of this invention, comprise a plurality of first passages, for transporting a first fluid or gas therethrough, and one or more second passages for transporting a second fluid or gas therethrough. The second ... | 02/14/2006 |
| 6772824 | Cooling system for vehicle To facilitate mounting of an oil cooler and a cooling fan. An oil cooler which is a cooler and a cooling fan are accommodated in the same case to form a cooling unit. This case is divided into a lid on the front half portion side and a fan cover on the rear half por... | 08/10/2004 |
| 6715538 | Supply air terminal device The invention concerns a supply air terminal device (10) including a supply chamber (11) for the supply air and in the supply chamber (11) nozzles (12a1, 12a2 . . . ; 12b1 | 04/06/2004 |
| 5038723 | Screening device for a heat exchanger of a vehicle A screening device for a heat exchanger which is arranged in an air duct of a vehicle and the air exit area of which is covered partially by an air duct cross-section tapered downstream of the heat exchanger and partially by an air duct wall subjected to ... | 08/13/1991 |
| 4743737 | Oscillating louver electric fan heater An electric fan heater includes a stationary housing and a louver blade assembly having a plurality of oscillating louver blades located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater also includes a drive... | 05/10/1988 |
| 4743739 | Oscillating louver electric fan heater A fan heating includes a stationary housing and a louvre blade assembly having at least one oscillating louvre blade located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater further includes a drive system f... | 05/10/1988 |
| 4299272 | Industrial heat pipe energy recovery package unit This invention relates in general to an industrial heat exchanger package unit for transferring heat energy between cool intake air flowing into an industrial process, and hot exhaust air flowing out of an industrial process. Each package units specifical... | 11/10/1981 |
| 4250954 | Heat control member and method A cover and method for controlling heat transfer from a room heating unit are disclosed. The cover includes a shell having a cross section adapted to be placed over and enclose a heating unit to limit or preclude heat flow. The cover can also include ther... | 02/17/1981 |
| 4176709 | Stack-type heat exchanger A stack-type heat exchanger having a complementary fan section in attached communication with a heat exchanger tube section, the fan section forcing incoming air through heat exchanger tubes having a damper plate at or adjacent their output ends to genera... | 12/04/1979 |
