Patent US4375504A successfully refreshed from Google Patents.
US4375504A
Expired / Lapsed
US
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Hydrodynamic reserve battery activation system
Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1981-05-04
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Granted: 1983-03-01
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Expires: 2001-05-04
Abstract
Abstract A system for activating reserve batteries pyrotechnically, including silicone rubber for conducting the force of detonation from a primer to the ends of the batteries to deform them smoothly and uniformly, and to insulate their casings from metal fragments or combustion products resulting from the detonation.
Inventors
- 👤 Norman E. Jensen
- 👤 Peter H. Van Sloun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:29
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
In combination: a member having a wall to be indented; a housing in which the position of said member is fixed; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space proximate to said wall; means for initiating operation of said primer; and means in said housing engaging said wall for conducting pressure generated by said primer to said wall in a hydrodynamic manner.
Claim 2
Dependent Claim
71 words
In combination: a member having a wall to be indented; a housing in which the position of said member is fixed; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space proximate to said wall; means for initiating operation of said primer; and means in said housing engaging said wall for conducting pressure generated by said primer to said wall in a hydrodynamic manner.
Claim 3
Dependent Claim
76 words
In combination: a pair of members each having a wall to be indented; a housing in which said members are fixed with said walls in spaced opposition; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space between said walls; means for initiating operation of said primer; and means in said housing engaging said walls for conducting pressure generated by said primer to said walls in a hydrodynamic manner.
Claim 4
Dependent Claim
76 words
In combination: a pair of members each having a wall to be indented; a housing in which said members are fixed with said walls in spaced opposition; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space between said walls; means for initiating operation of said primer; and means in said housing engaging said walls for conducting pressure generated by said primer to said walls in a hydrodynamic manner.
Claim 5
Dependent Claim
22 words
The combination of claim 1 in which the last name means comprises a confined body of silicon rubber free from air interfaces.
Claim 6
Dependent Claim
22 words
The combination of claim 2 in which the last name means comprises a confined body of silicone rubber free from air interfaces.
Claim 7
Dependent Claim
93 words
A reserve battery comprising a case containing a plurality of electrodes and a frangible ampule of electrolyte positioned to be fractured by indentation of a wall of said case; a housing in which the position of said battery is fixed; a pyrotechnic primer in said housing operable to generate pressure within a confined volume of space proximate to said walls; means for initiating operation of said primer; and means in said housing engaging said wall for conducting pressure generated by said primer to said wall in a hydrodynamic manner to indent said wall.
Claim 8
Dependent Claim
93 words
A reserve battery comprising a case containing a plurality of electrodes and a frangible ampule of electrolyte positioned to be fractured by indentation of a wall of said case; a housing in which the position of said battery is fixed; a pyrotechnic primer in said housing operable to generate pressure within a confined volume of space proximate to said walls; means for initiating operation of said primer; and means in said housing engaging said wall for conducting pressure generated by said primer to said wall in a hydrodynamic manner to indent said wall.
Claim 9
Dependent Claim
95 words
A pair of reserve batteries each comprising a case containing a plurality of electrodes and a frangible ampule of electrolyte positioned to be fractured by indentation of a wall of said case; a housing in which said batteries are fixed with said walls in spaced opposition; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space between said walls; means for initiating operation of said primer; and means in said housing engaging said walls for conducting pressure generated by said primer to said walls in a hydrodynamic manner.
Claim 10
Dependent Claim
95 words
A pair of reserve batteries each comprising a case containing a plurality of electrodes and a frangible ampule of electrolyte positioned to be fractured by indentation of a wall of said case; a housing in which said batteries are fixed with said walls in spaced opposition; a pyrotechnic primer in said housing operable to generate a pressure within a confined volume of space between said walls; means for initiating operation of said primer; and means in said housing engaging said walls for conducting pressure generated by said primer to said walls in a hydrodynamic manner.
Claim 11
Dependent Claim
22 words
The combination of claim 5 in which the last named means comprises a confined body of silicone rubber free from air interfaces.
Claim 12
Dependent Claim
22 words
The combination of claim 6 in which the last named means comprises a confined body of silicone rubber free from air interfaces.
References Cited (Backward Citations)
US3343993A
Cited
US3748183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-28 | 1986-08-30 | 1987-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-28 | 1990-08-30 | 1991-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-28 | 1994-08-30 | 1995-03-01 | $7700.00 | Window Closed / Lapsed |