Patent US3754996A successfully refreshed from Google Patents.
US3754996A
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Ductile ampule deferred action battery
Assignee: United States Department of the Army
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Filing: 1972-06-28
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Granted: 1973-08-28
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Expires: 1992-06-28
Abstract
Abstract A ductile ampule deferred action battery for use in fuses and other projectiles which is actuated internally by the set back forces of acceleration from a gun or other impelling means. This battery comprises an ampule that contains a weight attached to a spring, said weight and said spring having their principle axis parallel to the acceleration vector such that upon acceleration said weight depresses said spring causing the cutter attached to the weight to pierce the ductile ampule. This ampule and battery assembly will not break upon dropping or activate upon dropping because (1) the ampule is made out of the ductile material, (2) the weight spring combination immersed in the electrolyte acts as a dash-pot and the loading imparted to the weight upon dropping and normal handling is not sufficient to overcome the dash-pot forces exerted upon the weight and cause the weight to move enough such that the cutter can pierce the ampule. The ampule is used in combination with an annular stack of battery elements having the holes therein alligned to form a continuous passage into which said ampule is inserted.
Inventors
- 👤 G Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:42
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
79 words
A sealed ampule comprising a non-frangible electrolyteimpervious cylinder having a fluid electrolyte therein, a resilient member located at the bottom of said cylinder, said cylinder further having therein a substantially close fitting cylindrical piston immersed in said electrolyte and connected to said resilient member, and means attached to said piston and immersed in said electrolyte for puncturing said cylinder whereby said cylinder, member, and piston comprise a dashpot and whereby said resilient member counteracts forces exerted upon said piston.
Claim 2
Dependent Claim
79 words
A sealed ampule comprising a non-frangible electrolyteimpervious cylinder having a fluid electrolyte therein, a resilient member located at the bottom of said cylinder, said cylinder further having therein a substantially close fitting cylindrical piston immersed in said electrolyte and connected to said resilient member, and means attached to said piston and immersed in said electrolyte for puncturing said cylinder whereby said cylinder, member, and piston comprise a dashpot and whereby said resilient member counteracts forces exerted upon said piston.
Claim 3
Dependent Claim
32 words
The ampule according to claim 1 wherein said cylinder is a ductile hollow cylinder and wherein said piston comprises a first means for determining the flow of said electrolyte through said piston.
Claim 4
Dependent Claim
24 words
The ampule according to claim 2 wherein said dashpot further comprises a second means for determining the flow of said electrolyte around said piston.
Claim 5
Dependent Claim
19 words
The ampule according to claim 3 wherein said first means comprises at least one passage way in said piston.
Claim 6
Dependent Claim
29 words
The ampule according to claim 4 wherein said passageway comprises at least one through hole in said piston, and wherein said resilient member comprises a spring supporting said piston.
Claim 7
Dependent Claim
44 words
The ampule according to claim 5, wherein said cylinder comprises a fore end, an aft end, said aft end being closed and having at least one region therein, said region being the weakest structural part of said cylinder and located beneath said cutter means.
Claim 8
Dependent Claim
64 words
The ampule according to claim 6, wherein said cylinder further comprises a cap member closing said fore end and wherein said aft end has a substantially cylindrical depression therein, said depression having a diameter and being surrounded by an annular portion, said portion having said region therein, said spring having a diameter less than the diameter at said depression and fitting into said depression.
Claim 9
Dependent Claim
72 words
The ampule according to claim 7, wherein said piston having two ends is concentric within said cylinder, and wherein said/second means comprises at least one slot in the side of said piston and a spacing between said piston and said cylinder whereby said slot and said spacing permit electrolyte to flow from one end of said piston to the other end of said piston when said spring is depressed by said piston.
Claim 10
Dependent Claim
130 words
In combination, a stack of annular battery elements having apertures therein aligned to form a continuous passAge through said stack, said battery elements including bibulous separators adapted to soak up electrolyte and distribute the same into contact with electrode elements, a sealed ampule comprising a non-frangible electrolyte impervious cylinder having a liquid electrolyte therein, said cylinder further having therein a spring located at the bottom of said cylinder, a substantially close fitting cylindrical piston connected to said spring and immersed in said electrolyte, and means attached to said piston said means immersed in said electrolyte for puncturing said cylinder, said ampule being located within the central aperture of said annular stack whereby said cylinder, spring, and piston comprise a dashpot and whereby said spring counteracts forces exerted upon said piston.
Claim 11
Dependent Claim
130 words
In combination, a stack of annular battery elements having apertures therein aligned to form a continuous passAge through said stack, said battery elements including bibulous separators adapted to soak up electrolyte and distribute the same into contact with electrode elements, a sealed ampule comprising a non-frangible electrolyte impervious cylinder having a liquid electrolyte therein, said cylinder further having therein a spring located at the bottom of said cylinder, a substantially close fitting cylindrical piston connected to said spring and immersed in said electrolyte, and means attached to said piston said means immersed in said electrolyte for puncturing said cylinder, said ampule being located within the central aperture of said annular stack whereby said cylinder, spring, and piston comprise a dashpot and whereby said spring counteracts forces exerted upon said piston.
Claim 12
Dependent Claim
44 words
In the combination defined by claim 9, said cylinder which comprises a fore end, an aft end, said aft end being closed and having at least one region therein, said region being the weakest structural part of said cylinder and located beneath said means.
Claim 13
Dependent Claim
60 words
In the combination defined by claim 10, said cylinder further comprising a cap member closing said fore end, said aft and having a substantially cylindrical depression therein, said depression having a diameter and being surrounded by an annular portion having said region therein and said spring having a diameter less than the diameter of said depression and fitting into same.
Claim 14
Dependent Claim
83 words
In the combination defined by claim 11, a cylinder having an air bubble entrapped therein, means for determining electrolyte flow pass said piston, wherein said means comprises at least one through hole in said piston, said piston having a cutter means attached thereto, said cutter means having at least one point at the end thereof, said means protruding away from said piston and said spring supporting said piston, said spring having its principal axis aligned in the direction of support for said piston.
Claim 15
Dependent Claim
97 words
In the combination defined by claim 9, said cylinder, said spring, said piston, and means for interconnecting same comprising a ductile material, and wherein said cylinder comprises a fore end, an aft end, said aft end being integrally closed, a cap member, said member closing said for end, a cylindrical depression in said aft end having a diameter, said spring having a diameter less than the diameter of said depression and fitting therein, an annular portion of said aft end surrounding said depression said portion having at least one thin region therein located beneath said cutter means.
Claim 16
Dependent Claim
70 words
In the combination defined by claim 13, said ductile material comprising copper and wherein said piston having two ends is concentric within said cylinder, and wherein said piston further comprises at least one slot in the side thereof, and wherein/said slot provides means for permitting said electrolyte to flow from one end of said piston to the other end of said piston when said spring is depressed by said piston.
Claim 17
Dependent Claim
23 words
In the combination defined by claim 14, the improvement wherein said cap member is attached to said fore end by a cold weld.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |