US4937153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell circuit interrupter
Assignee: Edgewell Personal Care Brands LLC
•
Filing: 1988-08-29
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Granted: 1990-06-26
•
Expires: 2008-08-29
Abstract
Abstract The invention relates to a galvanic cell having a failsafe circuit interrupter means for electrically isolating one cover terminal of the cell from the cell's electrochemical system when the closed end of the container of the cell bulges beyond a predetermined amount.
Inventors
- 👤 Harry R. Huhndorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:31
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/572; H01M50/584; H01M50/586; H01M50/574; H01M50/59; H01M50/595; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
235 words
A sealed galvanic cell comprising a conductive container having an upstanding wall open at one end and closed at the opposite end and including in said container a positive electrode, a negative electrode and an electrolyte, and said conductive container being in electrical contact with one of said electrodes; a first cover mounted over said open end of said conductive container, said first cover being secured to and electrically insulated from said conductive container and in electrical contact with the other electrode; an electrically insulating material disposed at the central area of the closed end of the conductive container leaving the external surface of the upstanding wall adjacent the closed end of the conductive container exposed, a rigid conductive second cover terminating with a dependant flange such that the rigid second cover forceably slides onto and is secured to the closed end of the container by an interference fit thereby adapting said second cover as the terminal for the electrode in electrical contact with said conductive container; and wherein the closed end of the conductive container will bulge upon a predetermined pressure buildup within the conductive container to force the second cover to slide off and break the electrical contact between the inner surface of the depending flange and the outer surface of the upstanding wall thereby breaking the electrical contact between the second cover and the electrode in electrical contact with said conductive container.
Claim 2
Dependent Claim
235 words
A sealed galvanic cell comprising a conductive container having an upstanding wall open at one end and closed at the opposite end and including in said container a positive electrode, a negative electrode and an electrolyte, and said conductive container being in electrical contact with one of said electrodes; a first cover mounted over said open end of said conductive container, said first cover being secured to and electrically insulated from said conductive container and in electrical contact with the other electrode; an electrically insulating material disposed at the central area of the closed end of the conductive container leaving the external surface of the upstanding wall adjacent the closed end of the conductive container exposed, a rigid conductive second cover terminating with a dependant flange such that the rigid second cover forceably slides onto and is secured to the closed end of the container by an interference fit thereby adapting said second cover as the terminal for the electrode in electrical contact with said conductive container; and wherein the closed end of the conductive container will bulge upon a predetermined pressure buildup within the conductive container to force the second cover to slide off and break the electrical contact between the inner surface of the depending flange and the outer surface of the upstanding wall thereby breaking the electrical contact between the second cover and the electrode in electrical contact with said conductive container.
Claim 3
Dependent Claim
21 words
The galvanic cell of claim 1, wherein the internal surface of the flange of said second cover has a projected disturbance.
Claim 4
Dependent Claim
44 words
The galvanic cell of claim 2, wherein the projected disturbance on the inner surface of the flange of the second cover is at least one disturbance selected from the group consisting of a projected tip, a projected longitudinal rib and a projected circumferential rim.
Claim 5
Dependent Claim
25 words
The galvanic cell of claim 1, wherein the external surface of the upstanding wall of the container adjacent the closed end has a projected disturbance.
Claim 6
Dependent Claim
48 words
The galvanic cell of claim 4, wherein the projected disturbance on the external surface of the upstanding wall of the container adjacent the closed end is at least one disturbance selected from the group consisting of a projected tip, a projected longitudinal rib and a projected circumferential rim.
Claim 7
Dependent Claim
62 words
The galvanic cell of claim 1, wherein the internal surface of the second cover has a surface disturbance; said external surface of the upstanding wall of the container adjacent its closed end has a surface disturbance and said disturbance in the surface of the flange is adapted for mating in engagement with the surface disturbance in the upstanding wall of the container.
Claim 8
Dependent Claim
43 words
The galvanic cell of claim 6, wherein the surface disturbance in the external surface of the upstanding wall of the container is a groove and the surface disturbance in the internal surface of the dependant flange of the second cover is a rim.
Claim 9
Dependent Claim
49 words
The galvanic cell of claim 6, wherein the surface disturbance in the external surface area of the upstanding wall of the container is at least two spaced apart dimples and the surface disturbance in the internal surface of the dependent flange is at least two spaced apart projected tips.
Claim 10
Dependent Claim
46 words
The galvanic cell of claim 6, wherein the surface disturbance in the external surface of the upstanding wall of the container is a groove and the surface disturbance in the internal surface of the dependant flange of the second cover is at least two projected tips.
Claim 11
Dependent Claim
26 words
The galvanic cell of claim 9, wherein the container is a cylindrical container and the groove is composed of at least two spaced apart arcuate grooves.
Claim 12
Dependent Claim
16 words
The galvanic cell of claim 1, wherein said electrically insulating material is an electrically nonconductive adhesive.
Claim 13
Dependent Claim
23 words
The galvanic cell of claim 11, wherein the electrically nonconductive adhesive is selected from the group consisting of acrylic adhesive and epoxy adhesive.
Claim 14
Dependent Claim
16 words
The galvanic cell of claim 2, wherein said electrically insulating material is an electrically nonconductive adhesive.
Claim 15
Dependent Claim
23 words
The galvanic cell of claim 13, wherein the electrically nonconductive adhesive is selected from the group consisting of acrylic adhesive and epoxy adhesive.
Claim 16
Dependent Claim
16 words
The galvanic cell of claim 4, wherein said electrically insulating material is an electrically nonconductive adhesive.
Claim 17
Dependent Claim
23 words
The galvanic cell of claim 15, wherein the electrically nonconductive adhesive is selected from the group consisting of acrylic adhesive and epoxy adhesive.
Claim 18
Dependent Claim
16 words
The galvanic cell of claim 6, wherein said electrically insulating material is an electrically nonconductive adhesive.
Claim 19
Dependent Claim
23 words
The galvanic cell of claim 17, wherein the electrically nonconductive adhesive is selected from the group consisting of acrylic adhesive and epoxy adhesive.
Claim 20
Dependent Claim
16 words
The galvanic cell of claim 11, wherein the electrically nonconductive adhesive is a hot melt adhesive.
Claim 21
Dependent Claim
13 words
The galvanic cell of claim 19, wherein the hot melt adhesive is asphalt.
Claim 22
Dependent Claim
14 words
The galvanic cell of claim 11, wherein the electrically nonconductive adhesive is double-sided tape.
Claim 23
Dependent Claim
16 words
The galvanic cell of claim 13, wherein the electrically nonconductive adhesive is a hot melt adhesive.
Claim 24
Dependent Claim
13 words
The galvanic cell of claim 22, wherein the hot melt adhesive is asphalt.
Claim 25
Dependent Claim
14 words
The galvanic cell of claim 13, wherein the electrically nonconductive adhesive is double-sided tape.
Claim 26
Dependent Claim
16 words
The galvanic cell of claim 15, wherein the electrically nonconductive adhesive is a hot melt adhesive.
Claim 27
Dependent Claim
13 words
The galvanic cell of claim 25, wherein the hot melt adhesive is asphalt.
Claim 28
Dependent Claim
14 words
The galvanic cell of claim 15, wherein the electrically nonconductive adhesive is double-sided tape.
Claim 29
Dependent Claim
16 words
The galvanic cell of claim 17, wherein the electrically nonconductive adhesive is a hot melt adhesive.
Claim 30
Dependent Claim
13 words
The galvanic cell of claim 28, wherein the hot melt adhesive is asphalt.
Claim 31
Dependent Claim
14 words
The galvanic cell of claim 17, wherein the electrically nonconductive adhesive is double-sided tape.
Claim 32
Dependent Claim
13 words
The galvanic cell of claim 1, wherein said container is a cylindrical container.
Claim 33
Dependent Claim
34 words
The galvanic cell of claim 1, wherein said container is in electrical contact with a positive electrode and said first cover electrically insulated from the container is in electrical contact with a negative electrode.
Claim 34
Dependent Claim
34 words
The galvanic cell of claim 1, wherein said container is in electrical contact with a negative electrode and said first cover electrically insulated from the container is in electrical contact with a positive electrode.
Claim 35
Dependent Claim
29 words
The galvanic cell of claim 1, wherein one of said electrodes is MnO 2 , the other of said electrodes is zinc and said electrolyte solution comprises potassium hydroxide.
Claim 36
Dependent Claim
13 words
The galvanic cell of claim 2, wherein said container is a cylindrical container.
Claim 37
Dependent Claim
13 words
The galvanic cell of claim 4, wherein said container is a cylindrical container.
Claim 38
Dependent Claim
13 words
The galvanic cell of claim 6, wherein said container is a cylindrical container.
Claim 39
Dependent Claim
34 words
The galvanic cell of claim 2, wherein said container is in electrical contact with a positive electrode and said first cover electrically insulated from the container is in electrical contact with a negative electrode.
Claim 40
Dependent Claim
34 words
The galvanic cell of claim 4, wherein said container is in electrical contact with a positive electrode and said first cover electrically insulated from the container is in electrical contact with a negative electrode.
Claim 41
Dependent Claim
34 words
The galvanic cell of claim 6, wherein said container is in electrical contact with a positive electrode and said first cover electrically insulated from the container is in electrical contact with a negative electrode.
Claim 42
Dependent Claim
34 words
The galvanic cell of claim 2, wherein said container is in electrical contact with a negative electrode and said first cover electrically insulated from the container is in electrical contact with a positive electrode.
Claim 43
Dependent Claim
34 words
The galvanic cell of claim 4, wherein said container is in electrical contact with a negative electrode and said first cover electrically insulated from the container is in electrical contact with a positive electrode.
Claim 44
Dependent Claim
34 words
The galvanic cell of claim 6, wherein said container is in electrical contact with a negative electrode and said first cover electrically insulated from the container is in electrical contact with a positive electrode.
Claim 45
Dependent Claim
29 words
The galvanic cell of claim 2, wherein one of said electrodes is MnO 2 , the other of said electrodes is zinc and said electrolyte solution comprises potassium hydroxide.
Claim 46
Dependent Claim
29 words
The galvanic cell of claim 4, wherein one of said electrodes is MnO 2 , the other of said electrodes is zinc and said electrolyte solution comprises potassium hydroxide.
Claim 47
Dependent Claim
29 words
The galvanic cell of claim 4, wherein one of said electrodes is MnO 2 , the other of said electrodes is zinc and said electrolyte solution comprises potassium hydroxide.
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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) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |