US4005512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic toner removal brush and method of making same
Assignee: IRON TECHNOLOGY CORP A CORP OF FL
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Filing: 1975-10-23
•
Granted: 1977-02-01
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Expires: 1995-10-23
Abstract
Abstract A process for treating a pile material which is ultimately to be made into a toner removal brush used in association with electrophotographic printing which comprises treating the pile substrate material with a saturated aqueous solution of a chemical mixture comprising at various times a surfactant, an alkali metal salt, a source of borate ions and an optical dye, withdrawing excess solution by mechanical means and simultaneously orienting the pile, and preferably allowing the still wet material to dry at ambient or elevated temperature, forming an elongated pile-covered tubular structure with the resulting dried pile material, sizing the tube to desired lengths if necessary, subjecting the dried pile material to a further wetting either with water alone or a saturated aqueous solution of the same chemical mixture above defined, and then subjecting the pile-covered tube to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush with uniquely superior toner removal properties, and the brush nap made by this method.
Inventors
- 👤 Thomas G. Kandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0035; A; A46; A46D; A46D1/00
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
145 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture comprising an alkali metal salt and a source of borate ions, withdrawing excess solution therefrom, and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture comprising two alkali metal salts and a surfactant and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 2
Independent Claim
145 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture comprising an alkali metal salt and a source of borate ions, withdrawing excess solution therefrom, and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture comprising two alkali metal salts and a surfactant and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 3
Dependent Claim
28 words
A method according to claim 1 wherein said first chemical mixture further comprises additionally an optical dye, and said second chemical mixture further comprises additionally an optical dye.
Claim 4
Dependent Claim
43 words
A method according to claim 2 wherein said source of borate ions is boric acid, and said alkali metal salt comprises sodium phosphate in said first mixture and said two alkali metal salts comprise sodium metasilicate and sodium phosphate in said second mixture.
Claim 5
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 3.
Claim 6
Dependent Claim
49 words
A method according to claim 1 wherein said pile substrate material is in the form of an elongated strip, and wherein said excess solution in said strip is withdrawn by means of a suction force so that the resulting pile is flat and uni-directional and its edges folded inwardly.
Claim 7
Dependent Claim
17 words
A method according to claim 5 wherein said strip is adhesively bondably applied to said base core.
Claim 8
Dependent Claim
15 words
A method according to claim 6 wherein a coloring agent is mixed with said adhesive.
Claim 9
Dependent Claim
18 words
A method according to claim 5 wherein said strip is applied by butt-winding around said elongated tubular core.
Claim 10
Dependent Claim
38 words
A method according to claim 8 wherein said pile-covered tubular core is sized by cutting at desired intervals at substantially right angles to the tube in simultaneous association with a vacuum force before said centrifugal force is exerted.
Claim 11
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 1.
Claim 12
Independent Claim
153 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting the said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 13
Independent Claim
153 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting the said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 14
Dependent Claim
28 words
A method according to claim 11 wherein said first chemical mixture further comprises additionally an optical dye, and said second chemical mixture further comprises additionally an optical dye.
Claim 15
Dependent Claim
43 words
A method according to claim 12 wherein said source of borate ions is boric acid and said alkali metal salt comprises sodium phosphate in said first mixture and said two alkali metal salts comprise sodium metasilicate and sodium phosphate in said second mixture.
Claim 16
Dependent Claim
49 words
A method according to claim 11 wherein said pile substrate material is in the form of an elongated strip, and wherein said excess solution in said strip is withdrawn by means of a suction force so that the resulting pile is flat and uni-directional and its edges folded inwardly.
Claim 17
Dependent Claim
17 words
A method according to claim 14 wherein said strip is adhesively bondably applied to said base core.
Claim 18
Dependent Claim
15 words
A method according to claim 15 wherein a coloring agent is mixed with said adhesive.
Claim 19
Dependent Claim
18 words
A method according to claim 14 wherein said strip is applied by butt-winding around said elongated tubular core.
Claim 20
Dependent Claim
38 words
A method according to claim 17 wherein said pile-covered tubular core is sized by cutting at desired intervals at substantially right angles to the tube in simultaneous association with a vacuum force before said centrifugal force is exerted.
Claim 21
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 11.
Claim 22
Independent Claim
131 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 23
Independent Claim
131 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 24
Dependent Claim
28 words
A method according to claim 20 wherein said first chemical mixture further comprises additionally an optical dye, and said second chemical mixture further comprises additionally an optical dye.
Claim 25
Dependent Claim
43 words
A method according to claim 21 wherein said source of borate ions is boric acid, and said alkali metal salt comprises sodium phosphate in said first mixture and said two alkali metal salts comprise sodium metasilicate and sodium phosphate in said second mixture.
Claim 26
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 20.
Claim 27
Independent Claim
142 words
A method of making an electrophotographic toner removal brush which treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant still wet pile material to an elongated tubular base core, subjecting said wet pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 28
Independent Claim
142 words
A method of making an electrophotographic toner removal brush which treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant still wet pile material to an elongated tubular base core, subjecting said wet pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises an alkali metal salt and a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 29
Dependent Claim
25 words
A method according to claim 24 wherein said wet pile material is allowed to dry before it is applied to said elongated tubular base core.
Claim 30
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 25.
Claim 31
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 24.
Claim 32
Independent Claim
71 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant wet pile material to an elongated tubular base, subjecting said wet pile material to further treatment with a saturated aqueous solution of at least one alkali metal salt, a surfactant, a source of borate ions and an optical dye.
Claim 33
Independent Claim
71 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant wet pile material to an elongated tubular base, subjecting said wet pile material to further treatment with a saturated aqueous solution of at least one alkali metal salt, a surfactant, a source of borate ions and an optical dye.
Claim 34
Dependent Claim
25 words
A method according to claim 28 wherein said wet pile material is allowed to dry before it is applied to said elongated tubular base core.
Claim 35
Dependent Claim
12 words
A method according to claim 29 wherein the treating steps are reversed.
Claim 36
Independent Claim
149 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt, and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 37
Independent Claim
149 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt, and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 38
Dependent Claim
14 words
A method according to claim 31 wherein said alkali metal salt comprises sodium metasilicate.
Claim 39
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 31.
Claim 40
Independent Claim
140 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture comprising a source of borate ions, withdrawing excess solution therefrom, and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture comprising two alkali metal salts and a surfactant and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 41
Independent Claim
140 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first chemical mixture comprising a source of borate ions, withdrawing excess solution therefrom, and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resulting dried pile material to an elongated tubular base core and subjecting said dried pile to further treatment with a saturated aqueous solution of a second chemical mixture comprising two alkali metal salts and a surfactant and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 42
Dependent Claim
28 words
A method according to claim 34 wherein said first chemical mixture comprises additionally a surfactant and said second chemical mixture further comprises additionally a source of borate ions.
Claim 43
Independent Claim
145 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt, and an optical dye, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 44
Independent Claim
145 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt, and an optical dye, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 45
Dependent Claim
14 words
A method according to claim 36 wherein said alkali metal salt comprises sodium metasilicate.
Claim 46
Dependent Claim
12 words
The electrophotographic toner removal brush made by the method of claim 36.
Claim 47
Independent Claim
147 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 48
Independent Claim
147 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, allowing the still solution wet pile material to dry, applying the resultant dried pile material to an elongated tubular base core and subjecting said dried pile material to further treatment with an aqueous medium and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 49
Dependent Claim
28 words
A method according to claim 39 wherein said first chemical mixture comprises additionally a surfactant and said second chemical mixture further comprises additionally a source of borate ions.
Claim 50
Independent Claim
125 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt and an optical dye, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 51
Independent Claim
125 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt and an optical dye, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 52
Dependent Claim
14 words
A method according to claim 41 wherein said alkali metal salt comprises sodium metasilicate.
Claim 53
Independent Claim
126 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 54
Independent Claim
126 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with a saturated aqueous solution of a first and second chemical mixture, wherein said first chemical mixture comprises a source of borate ions and said second chemical mixture comprises two alkali metal salts and a surfactant, withdrawing excess solution therefrom and simultaneously orienting the pile, applying the resultant still solution wet pile material to an elongated tubular base core and subjecting said solution wet pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition, thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 55
Dependent Claim
28 words
A method according to claim 43 wherein said first chemical mixture comprises additionally a surfactant and said second chemical mixture further comprises additionally a source of borate ions.
Claim 56
Independent Claim
137 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant still wet pile material to an elongated tubular base core, subjecting said wet pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 57
Independent Claim
137 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, applying the resultant still wet pile material to an elongated tubular base core, subjecting said wet pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture wherein said first and second chemical mixtures are the same and each comprises a surfactant, an alkali metal salt and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 58
Independent Claim
144 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, allowing the still solution wet material to dry, applying the resultant dried pile material to an elongated tubular base core, subjecting said dried pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant an alkali metal salt and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
Claim 59
Independent Claim
144 words
A method of making an electrophotographic toner removal brush which comprises treating a pile substrate material with an aqueous medium, withdrawing excess moisture therefrom and simultaneously orienting the pile, allowing the still solution wet material to dry, applying the resultant dried pile material to an elongated tubular base core, subjecting said dried pile material to further treatment with a saturated aqueous solution of a first and second chemical mixture, wherein said first and second chemical mixtures are the same and each comprises a surfactant an alkali metal salt and an optical dye, and finally subjecting said further treated pile material to a centrifugal force sufficient to hurl the pile fibers to an erect condition thereby forming a brush nap wherein the density of each pile fiber has been increased by rapid centrifugal removal of the solution therefrom and allowing the brush nap to dry.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |