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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7077129 | Dispenser with biased cover There is provided a dispenser comprising a body for receipt of a carrier for a composition; an exit channel definable by the body for passage of the composition to a user; a cover for the exit channel reversibly movable between a storage position in which the cover ... | 07/18/2006 |
| 6945772 | Child resistant disposable lighter A child resistant disposable lighter includes a shielding frame including a U-shaped frame body and a pair of shielding guards. The frame body, which is mounted on a supporting frame, has two sidewalls positioned at two outer sides of the supporting walls respective... | 09/20/2005 |
| 6027333 | Radiant tube burner With respect to a radiant tube burner to be used for heating a heating furnace or the like, to suppress the generation of NOx accompanying combustion, to make the structure thereof fit for a radiant tube burner equipment, to simplify the control of a fuel... | 02/22/2000 |
| 5980243 | Flat flame A burner for combusting fuel gas and air in an enclosure having a burner block member of non-combustible material, such as ceramic, having a central rectangular or square opening. Said burner block being located between the surface to be heated and an enc... | 11/09/1999 |
| 5700141 | Pilot module assembly An ignitor unit for an aircraft fuel spill simulator having an ignitor sparkplug without an air gap, a closed end cylinder having a top end wall with a hole receiving the ignitor sparkplug and having a peripheral wall with an inlet branch connection, a fu... | 12/23/1997 |
| 5700142 | Liquid pilot assembly A liquid pilot assembly for use in an outdoor fuel spill fire fighting trainer is provided. This assembly includes a spark plug igniter unit, a liquid fuel system, an air distribution system, a housing enclosing the components and a vaporization subassemb... | 12/23/1997 |
| 5681160 | Flare tip structure and a method of disposal of gas ulilizing such a structure A flare tip structure has a tubular component usually mounted at the top of a flare sack which emits waste gas into the atmosphere for disposal by combustion with the aid of one or more pilot burners. Several fluid injectors are mounted inside the compone... | 10/28/1997 |
| 5554022 | Burner apparatus and method A burner apparatus for the combustion of a fuel and an oxidizer includes a burner block having a fuel line for feeding fuel to a fuel port opening into a combustion chamber and a plurality of primary and secondary oxidizer lines positioned around the fuel... | 09/10/1996 |
| 5445516 | Burner method and apparatus having low emissions A low NOx gas burner for heating objects having a supply of gas under pressure which is to be mixed to achieve a combustible mixture, gas flow line connecting to said burner to said supply, a burner means for mixing air with said fluid fuel to achieve sai... | 08/29/1995 |
| 5184949 | Oil burner and method A gun-type oil burner is disclosed having a motor axially aligned with a fuel pump and a blower at opposite ends. The blower draws air into the burner, the amount of which is controlled by an adjustable air gate. The blower inlet is covered by a removable... | 02/09/1993 |
| 5110285 | Fluidic burner Method and apparatus for changing the direction of a fluid stream injected into a combustion zone wherein a flow of biasing fluid is provided to a high velocity fuel or oxidant stream in a perpendicular direction proximate the inlet of an outwardly tapere... | 05/05/1992 |
| 5055031 | Fire vortex display A fire vortex display for providing an interesting fire display for decorative and attention getting purposes. The display utilizes a burner for burning a gaseous or liquid fuel, typically in a very fuel rich mixture. The burner is located at one end of a... | 10/08/1991 |
| 4911637 | Flame treatment method and apparatus An oxygen-fuel burner has a pipe 20 for fuel, for example pulverized coal carried in air, and two pipes 22 and 24 for oxygen. The burner is typically mounted horizontally above a burden to be heated. The oxygen pipes 22 and 24 have separate outlets dispos... | 03/27/1990 |
| 4901705 | Gas combustion apparatus A gas heating cooker to be used as a grill or an oven, wherein the blow-off air current of the blowing apparatus blows along the flames of the lower burner to get the hot current to reach far, so that the heating chamber becomes superwide enough to allow ... | 02/20/1990 |
| 4786247 | Method of lengthening the flame from a gas burner A ribbon gas burner for use in a baking oven has a row of gas apertures disposed between two rows of air apertures through which air is forced under pressure. The streams of air issuing from the two rows of air apertures are inclined inwardly towards the ... | 11/22/1988 |
| 4749351 | Lighter A hand-held smoker's lighter having a flame shield that defines a transverse opening in which a venturi effect increases the velocity of air flow to draw the lighter flame deep into a smoking pipe bowl for pipe lighting and a top opening through which the... | 06/07/1988 |
| 4615895 | Forced air/gas burner and baking oven incorporating same A ribbon gas burner for use in a baking oven has a row of gas apertures disposed between two rows of air apertures through which air is forced under pressure. The streams of air issuing from the two rows of air apertures are inclined inwardly towards the ... | 10/07/1986 |
| 3954382 | Combustion apparatus and method This invention relates to a combustion apparatus provided with a multiple of burners, a annular burner tile structure which is of rectangular section, combustion air passages along the major walls of the burner tile structure, and a series of air inlet ho... | 05/04/1976 |
