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US 6,598,532 B2Granted
Electric circuit for an electrically dischargeable primer
OwnerDonald G. Gerard, Eileen L. Gerardinventors
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OwnerDonald G. Gerard, Eileen L. Gerardinventors
Estimating the term…
An electrical circuit for electrically dischargeable primers having a conductive body, a first electrical contact area, a bottom plate area, one or more burn out area(s) on the bottom plate area, and a second electrical contact area. The conductive body provides an electrical path between a primer's inside cylindrical wall and an inside surface of the primer's cap or cup. The first electrical contact area makes an electrical contact with the inside surface of the cylindrical wall. The second electrical contact area makes an electrical contact with an inside surface of the primer's cap or cup. The bottom plate area is positioned in a bottom location of an electrically dischargeable primer. At least one, but typically two or more burn out areas are on the bottom plate area. The burn out areas have a reduced cross section area. The total cross section area of the burn out areas must be less than the cross section of any other location on the elongated conductive body. Since the burn out area have a smaller cross section area they will heat and burn faster than any other area when an electrical current is applied. This assures the precise location of ignition of primer powder.
An electrical circuit for an electrically dischargeable primer comprising said first and second electrical contacts extending upwardly from the bottom plate area:
An electrical circuit for an electrically dischargeable primer comprising a cylindrical wall and a primer cup or cap, the electrical circuit comprising an elongated conductive material having a first electrical contact near a first end, a bottom plate area in a middle area, one or more burn out area(s) at said bottom plate area, and a second electrical contact extending from said bottom plate area, said first and second electrical contacts extending upwardly from the bottom plate are said electrical circuit being the only conductive path between an electrically dischargeable primer's cylindrical wall and an electrically dischargeable primer's cup or cap and said burnout area(s) having a total cross sectional area less than any other cross sectional area on said elongated conductive material.
An electrical circuit for an electrically dischargeable primer comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Electric: operable also in the percussion mode
Ammunition fuzes
Term ended 14 Aug 2021 (estimated)
Not applicable
Not applicable
This invention relates to an electrical circuit for an electrically dischargeable primer and more particularly to a type of electrical circuit that can be used in either a purely electrically discharged primer, or a dual or combination electrically and/or mechanically discharged primer.
FIG. 1 shows one embodiment of the electrical circuit of this invention, showing the electrical circuit in a flattened pattern to provide a representational view showing the relationship of the burn out area in relation to the remainder of the electric circuit. The electrical circuit of this embodiment is used in the primers shown in FIGS. 5-8.
FIG. 2 shows a second embodiment of the electrical circuit of this invention, showing the electric circuit in a flattened position to provide a representational view showing the relationship of the burn out area in relation to the remainder of the electric circuit. The electric circuit of this embodiment is used in the primers shown in FIGS. 9-12.
FIG. 2A shows a third embodiment of the electrical circuit of this invention, a variation of the electrical circuit shown in FIG. 2, with a simple burn out area, as used in the primer shown in FIG. 3.
Referring now to the drawings in general there is shown the preferred embodiments, and the best mode contemplated, of the electrical circuit 10 for an electrical dischargeable primer 14.
FIGS. 1, 2 and 2A show three basic configurations of the preferred embodiments of the electrical circuit 10, which are in a flattened view to illustrate the principal features of the invention. Other configuration could also be used that could also contain the main inventive features of the invention. These configurations are illustrated by way of example and not as a limiting factor.
The electrical circuit 10 of this invention has an elongated conductive body 12, a first electrical contact area 16, a bottom plate area 20, one or more burn out area(s) 22 on the bottom plate area 20, and a second electrical contact area 18. Further detail is provided below.