Patent US3713894A successfully refreshed from Google Patents.
US3713894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable reserve activated electrochemical cell
Assignee: Honeywell Inc
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Filing: 1971-08-30
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Granted: 1973-01-30
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Expires: 1991-08-30
Abstract
Abstract A disposable reserve activated electrochemical cell wherein the active elements of the cell, including electrolyte solvent, are maintained in a separate first flexible plastic envelope and the entire cell, including the first envelope, are contained within a second flexible plastic envelope. Both the first and the second envelope are contained within a relatively rigid housing. The activation of the cell is achieved by perforating the first envelope, without breaking the seal of the second envelope, thereby maintaining a good hermetic seal and preventing leakage.
Inventors
- 👤 E Weidner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A reserve activated primary cell comprising: a housing having an open slot at one end; a first flexible hermetically sealed envelope positioned within said housing; active electrochemical material contained within said first envelope; a second flexible hermetically sealed envelope positioned within said housing and containing said first envelope; said second envelope further containing elements of electric current-producing cells which together with the electrochemically active material contained within said first envelope constitute a complete electric current-producing cell; means extending through said open slot, attached to said second envelope for pulling said second envelope; and means for perforating said first envelope in response to the pulling of said second envelope without breaking the seal of said second envelope.
Claim 2
Dependent Claim
116 words
A reserve activated primary cell comprising: a housing having an open slot at one end; a first flexible hermetically sealed envelope positioned within said housing; active electrochemical material contained within said first envelope; a second flexible hermetically sealed envelope positioned within said housing and containing said first envelope; said second envelope further containing elements of electric current-producing cells which together with the electrochemically active material contained within said first envelope constitute a complete electric current-producing cell; means extending through said open slot, attached to said second envelope for pulling said second envelope; and means for perforating said first envelope in response to the pulling of said second envelope without breaking the seal of said second envelope.
Claim 3
Dependent Claim
116 words
A reserve activated primary cell comprising: a housing having an open slot at one end; a first flexible hermetically sealed envelope positioned within said housing; active electrochemical material contained within said first envelope; a second flexible hermetically sealed envelope positioned within said housing and containing said first envelope; said second envelope further containing elements of electric current-producing cells which together with the electrochemically active material contained within said first envelope constitute a complete electric current-producing cell; means extending through said open slot, attached to said second envelope for pulling said second envelope; and means for perforating said first envelope in response to the pulling of said second envelope without breaking the seal of said second envelope.
Claim 4
Dependent Claim
116 words
A reserve activated primary cell comprising: a housing having an open slot at one end; a first flexible hermetically sealed envelope positioned within said housing; active electrochemical material contained within said first envelope; a second flexible hermetically sealed envelope positioned within said housing and containing said first envelope; said second envelope further containing elements of electric current-producing cells which together with the electrochemically active material contained within said first envelope constitute a complete electric current-producing cell; means extending through said open slot, attached to said second envelope for pulling said second envelope; and means for perforating said first envelope in response to the pulling of said second envelope without breaking the seal of said second envelope.
Claim 5
Dependent Claim
183 words
A reserve activated primary cell comprising: a substantially rigid outside housing having an opening therein; cell components positioned within said housing; a first hermetically sealed flexible envelope surrounding one or more of said cell components, keeping them out of electrochemical contact with other cell components, thereby rendering the cell inactive; a second flexible envelope of non-porous material positioned within said housing and enclosing said first envelope and said cell components, said second envelope having a first end attached to the internal wall of said housing to form a seal between said cell components and said opening in said housing, and having a second end protruding through said opening, said second envelope further being of sufficient length so that it may be pulled through said opening for a given distance without breaking said seal; said first envelope being attached to said second envelope such that a pulling action on said second envelope through said opening results in pulling along of said first envelope; and means mounted within said housing for engaging and perforating said second envelope when said first envelope is moved relative thereto.
Claim 6
Dependent Claim
183 words
A reserve activated primary cell comprising: a substantially rigid outside housing having an opening therein; cell components positioned within said housing; a first hermetically sealed flexible envelope surrounding one or more of said cell components, keeping them out of electrochemical contact with other cell components, thereby rendering the cell inactive; a second flexible envelope of non-porous material positioned within said housing and enclosing said first envelope and said cell components, said second envelope having a first end attached to the internal wall of said housing to form a seal between said cell components and said opening in said housing, and having a second end protruding through said opening, said second envelope further being of sufficient length so that it may be pulled through said opening for a given distance without breaking said seal; said first envelope being attached to said second envelope such that a pulling action on said second envelope through said opening results in pulling along of said first envelope; and means mounted within said housing for engaging and perforating said second envelope when said first envelope is moved relative thereto.
Claim 7
Dependent Claim
22 words
A reserve activated primary cell according to claim 2 wherein said first and said second envelopes are constructed of heat sealable film.
Claim 8
Dependent Claim
16 words
A reserve activated primary cell according to claim 3 wherein said heat sealable film is polyethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |