초록 ▼

An electric igniter is disclosed which comprises two elements made of electrically conducting material, a body separating the elements and made of electrically insulating material, such as glass or material containing glass, at least one further electrically conducting element arranged on a surface

An electric igniter is disclosed which comprises two elements made of electrically conducting material, a body separating the elements and made of electrically insulating material, such as glass or material containing glass, at least one further electrically conducting element arranged on a surface common to the two elements and the body for connecting the two elements electrically, and also a pyrotechnical composition in contact with the surface and the further element. Burning of the composition can be initiated by means of heat developed in the further, initiating element.

대표청구항 ▼

An improved electric igniter, comprising: a first electrically conductive element having a first end surface; a second electrically coductive element having a second end surface; an electrically insulating body having a third end surface, said body joining and electrically isolating said first and s

An improved electric igniter, comprising: a first electrically conductive element having a first end surface; a second electrically coductive element having a second end surface; an electrically insulating body having a third end surface, said body joining and electrically isolating said first and second electrically conductive elements, the coefficients of thermal expansion of said body and said electrically conductive elements being such that the joints between said elements and said body remain tight independent of temperature variations in the range of -40°C. to +60°C., and that said body is clamped between said first and second elements in said temperature range, said first and second elements being formed from a material which has a good wetting effect when contacted by the molten materials of said body; a flat surface extending across and including said end surfaces of said elements and said body; at least one electrically conductive bridge element comprising a layer of electrically conductive material having a thickness of up to 12×10-8 m., said layer being deposited directly on said flat surface to extend between said end surfaces of said first and second conductive elements and across said end surface of said body and being divided, by grooves extending through said layer to said flat surface, into at least one bar-shaped portion joining a first portion of said layer, said first portion being electrically connected to said first electrically conductive element, to a separate, second portion of said layer, said second portion being electrically connected to said second electrically conductive element; and a pyrotechnical composition directly contacting said bridge element under pressure, whereby when current is passed through said bridge element via said first and second electrically conductive elements, said bridge element generates sufficient heat to ignite said pyrotechnical composition.