Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7388176 | Heating device with thin heating boards A heating device includes a case having a plurality of openings and a plurality of slits are defined in bars of the case so that a plurality of heating boards are engaged with the slits of the case at an equal distance. A power control device is connected to the cas... | 06/17/2008 |
| 7203416 | Ventilating and heating apparatus with heater shielded by tapered discharge duct The invention provides a ventilating and heating apparatus for installation in a building structure. In some embodiments, the apparatus includes a main housing in which is located a ventilating fan assembly and a heater fan assembly having a heater and a discharge d... | 04/10/2007 |
| 7190887 | Portable thermal-stratifying space heater and powerplant package A portable room heater is provided comprising an upright enclosure defining an inlet at a lower end of the enclosure, an outlet at an upper end of the enclosure, and a passageway fluidly connecting the inlet and the outlet. The portable room heater further comprises... | 03/13/2007 |
| 7133604 | Infrared air heater with multiple light sources and reflective enclosure An air heater is provided for use in buildings or other structures. The air heater uses infrared lamps to generate a temperature rise in a forced air chamber that contains several infrared lamps, in which two ends of the chamber act as an inlet and an outlet, and in... | 11/07/2006 |
| 7046918 | Space heater with pretreated heat exchanger A space heater with a linear source of infrared radiant energy in heat exchange relationship with a heat exchanger formed of copper or aluminum material. The copper is pretreated to soften the copper and partially blacken the surface thereof. The aluminum is anodize... | 05/16/2006 |
| 6907192 | Hybrid hotair heater If both the electric heaters and combustion heaters constitute a hybrid type hot-air heater wherein both heaters are equipped with inlets adjacent to each other and are also housed within a frame and separated such that the air blowing systems of each heater are ind... | 06/14/2005 |
| 6903928 | Integrated crossflow cooler for electronic components An integrated crossflow cooler for electronic components comprises a heatsink with at least two openings, a crossflow blower and an electric drive with a stator and a magnetized rotor. The heatsink comprises a base and heat exchanging means; the base provides therma... | 06/07/2005 |
| 6327427 | Space heater and enclosure An electric space heater uses the heat generated by quartz-halogen lamps to heat air which may be supplied to heat a local space. The heater conducts air through a heater enclosure in which the lamps are installed. The air path is parallel to the longitud... | 12/04/2001 |
| 4739153 | Wall mounted electric room heater A wall mounted electric room heater includes a wall box adapted to be secured between a pair of wall studs and having an open front and side walls extending from a back wall. A heater/blower assembly carried by a frame is disposed in the box and includes ... | 04/19/1988 |
| 4683370 | Hot air gun with air directing housing A hot air gun or blower of the type usable for blistering paint on a painted surface for easing the removal of paint thereof has a housing with internal brackets supporting and retaining a switch assembly, a circuit board, a motor having an impeller, a mo... | 07/28/1987 |
| 4680448 | Infrared space heater A space heating device which utilizes infrared lamps has enhanced heat transfer, and achieves an air flow velocity increase of approximately 30 percent, resulting in increased efficiency. A heat exchanger comprising a plurality of spaced, parallel copper ... | 07/14/1987 |
| 4309594 | Modular infrared space heater device A modular infrared heating device having an outer casing which encloses a heating chamber wherein one or more infrared lamps are vertically positioned. The heating device also includes an intake channel which communicates with an opening in the outer casi... | 01/05/1982 |
| 4260875 | Controlled temperature hair dryer A hair dryer, the temperature of the air stream from which is automatically controlled by the temperature of the hair being dried, is provided. The dryer includes a primary air inlet, a fan for blowing inlet air out of the dryer, and a heater by which the... | 04/07/1981 |
| 4197447 | Modular infrared space heater device A modular infrared space heating device includes an enclosure having an air inlet and an air exhaust. A plurality of open-ended ferrous metal conduits are positioned in the enclosure between the air exhaust and a plurality of infrared lamps. The conduits ... | 04/08/1980 |
| 3973101 | Electric air heating furnace An electric furnace comprised of an outer casing, a support casing and a heater casing, the outer casing has a substantially rectangular cross-section with air inlet openings formed in the lower portion of the back wall and in the upper portion thereof wh... | 08/03/1976 |
