Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7168917 | Heat-generating blower housing A centrifugal blower for a furnace, heat pump, or other type of air handling unit includes a heat-generating blower housing that heats the airflow as the air passes through the blower housing. In some cases, the housing is made of a thermosetting resin impregnated w... | 01/30/2007 |
| 7115158 | Fan having blade members that heat and cool and has an ionizing grid for air purification A ceiling fan that incorporates into its blades both a system for air purification by removing dust and other particulate pollutants from the air in a room through ionization of the air stream passing over an ionizer grid and also a system for heating and cooling th... | 10/03/2006 |
| 7043146 | All season heat fan with electric heating elements powered by rotating rings and ball bearings An all season fan with heated circulating blades includes heating elements mounted in slots defined in the rear surface of the fan blades for heating of air blown outwardly therefrom. Resilient biasing devices such as a bow springs are mounted in the fan blades exte... | 05/09/2006 |
| 6762396 | Deposited resistive coatings The present invention involves coatings deposited on a substrate including a layer having a selected resistivity. The resistive layer can serve as a heat source in a variety of applications and can be fabricated using an arc plasma spraying procedure. ... | 07/13/2004 |
| 6280211 | Wall mounted heater fan with electrical outlet An electrical appliance has a plug receptor to receive the plug of another appliance such that both appliances can draw power from a single electrical outlet. The appliance of the present invention is operable at different wattages and has a switch which ... | 08/28/2001 |
| 5545009 | Hot air/cold air dual-mode electric fan A hot air/cold air dual-mode electric fan including a vane assembly having an electric heating coil in the mica sheets of each vane, a bakelite mount fixedly secured to the vane assembly and having a circuit board with backward female contacts, a barrel m... | 08/13/1996 |
| 5471763 | Nozzle attachment for a hair dryer A nozzle attachment for a hair dryer has a cylindrical element for connecting a flow-directing member to the nozzle of a hair dryer. The flow-directing member deflects the air coming from the hair dryer by a certain acute angle. The flow-directing member ... | 12/05/1995 |
| 5230606 | Electric fan with hot air/cold air dual-mode control An electric fan includes a vane assembly fastened to a hub connected to a base plate in front of a motor output shaft of the motor by a connector and two bearings, which vane assembly is consisted of a plurality of vanes, of which each is comprised of an ... | 07/27/1993 |
| 4962759 | Air bubbling mats having heated air for therapeutically agitating bath water A bubbling air mat has an air hose leading to a control unit having a motor therein. A number of saftey devices are provided to prevent a user from being electrocuted if water reaches the control unit. In the most protected area within the control unit, a... | 10/16/1990 |
| 4782213 | Ceiling fan electrically heating environmental air A fan, such as a ceiling fan, for heating and circulating air in an enviroment includes a plurality of fan blades rotatable by an electric motor. The blades are each provided with an open interior space defining an air flow passage transversely through th... | 11/01/1988 |
| 4504191 | Heated ceiling fan A heated ceiling fan comprising a plurality of blades with heating means in each of the blades.... | 03/12/1985 |
| 3997758 | Moisture control device for steam turbines An axial flow elastic fluid turbine apparatus includes a rotor having an annular array of circumferentially spaced blades. A casing encircles the rotor and an annular array of circumferentially spaced stationary nozzle blades is fastened the casing and ar... | 12/14/1976 |
