Zinc/air cell
First Claim
1. A method of applying adhesive to a portion of the inside surface of the cathode casing for a zinc/air cell, comprising:
- applying an adhesive carried by a transfer pad to a portion of the inside surface of said cathode casing and retracting the transfer pad from said casing whereby a portion of the adhesive on the pad remains on the cathode casing.
2 Assignments
0 Petitions
Accused Products
Abstract
A zinc/air button cell having an adhesive sealant applied to a portion of the inside surface of the cell'"'"'s cathode casing. The adhesive sealant can be applied to the inside surface of a recessed annular step surrounding the cell'"'"'s positive terminal on the cathode casing. The adhesive is preferably applied in a pattern which conforms to the shape of the annular recessed step. An electrolyte barrier sheet, preferably of Teflon, can be applied to the adhesive pattern on the inside surface of said recessed step, preferably so that the adhesive bonds the edge of the barrier sheet to the step. The adhesive prevents electrolyte from leaking from the cell. The adhesive is applied preferably by preparing a plate having a desired pattern etched thereon, filling the etching in the plate with an adhesive mixture, applying a silicon pad to the etching to transfer the adhesive pattern to the pad, then applying the pad to the inside surface of the cathode casing step to transfer the adhesive pattern thereto. The adhesive is preferably a solvent based mixture comprising a polyamide.
42 Citations
28 Claims
-
1. A method of applying adhesive to a portion of the inside surface of the cathode casing for a zinc/air cell, comprising:
applying an adhesive carried by a transfer pad to a portion of the inside surface of said cathode casing and retracting the transfer pad from said casing whereby a portion of the adhesive on the pad remains on the cathode casing.
-
2. A method of applying adhesive to a portion of the inside surface of the cathode casing for a zinc/air cell, comprising the steps of:
-
(a) providing a plate having a groove or etching on its surface, (b) filling the groove or etching on the plate with an adhesive forming an adhesive pattern on the plate, (c) applying a transfer pad to the adhesive pattern, (d) retracting the transfer pad from the adhesive pattern whereby said adhesive pattern transfers to the pad, (e) applying the transfer pad to a portion of the inside surface of said cathode casing, (f) retracting the transfer pad from the inside surface of said casing whereby the adhesive pattern on the transfer pad transfers to the cathode casing. - View Dependent Claims (4, 5, 6, 7, 8, 9)
-
-
3. The method of claim 3 wherein the pad is of silicone rubber.
- 10. A metal/air depolarized cell comprising an anode casing and a cathode casing, an anode material comprising zinc and alkaline electrolyte within said anode casing, and a catalytic cathode within said cathode casing, wherein the cathode casing is in the form of a can having an open end and a closed end, wherein said closed end has a central portion surrounded by a recessed annular step, said annular step forming a portion of said closed end and said adhesive is applied to the inside surface of said annular step.
-
17. A metal/air depolarized cell comprising an anode casing and a cathode casing, an anode material comprising zinc and alkaline electrolyte within said anode casing, and a catalytic cathode within said cathode casing, wherein the cathode casing is in the form of a can having an open end and a closed end, wherein said closed end has a central portion surrounded by a recessed annular step, said annular step forming a portion of said closed end and said adhesive is applied to the inside surface of said annular step, wherein the adhesive is in the form of a continuous ring conforming to the shape of said annular step.
-
18. A metal/air depolarized cell comprising an anode casing and a cathode casing, an anode material comprising zinc and alkaline electrolyte within said anode casing, and a catalytic cathode within said cathode casing, wherein the cathode casing is in the form of a can having an open end and a closed end, wherein said closed end has a central portion surrounded by a recessed annular step, said annular step forming a portion of said closed end and wherein an adhesive is applied to a portion of the inside surface of said closed end, wherein the cell further comprises an electrolyte barrier sheet having a portion thereof bonded to the adhesive on the inside surface of said closed end.
- 19. A cathode casing for a metal/air depolarized cell wherein the cathode casing is in the form of a can having an open end and a closed end wherein said closed end has a central portion surrounded by a recessed annular step, said annular step forming a portion of said closed end and said adhesive is applied to the inside surface of said annular step.
-
23. A cathode casing for a metal/air depolarized cell wherein the cathode casing is in the form of a can having an open end and a closed end, wherein said closed end has a central portion surrounded by a recessed annular step, said annular step forming a portion of said closed end and said adhesive is applied to the inside surface of said annular step, wherein the adhesive is in the form of a continuous ring conforming to the shape of said annular step.
- 24. A cathode casing for a metal/air depolarized cell wherein the cathode casing is in the form of a can having an open end and a closed end wherein a central portion of said closed end is surrounded by a recessed annular step, said annular step forming a portion of said closed end and said adhesive is applied to the inside surface of said annular step, wherein the cell further comprises a electrolyte barrier sheet having a portion thereof bonded to said adhesive on the inside surface of said annular step.
Specification