US4487746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc by-products evacuation and neutralization system
Assignee: Electric Power Research Institute
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Filing: 1983-02-17
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Granted: 1984-12-11
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Expires: 2003-02-17
Abstract
Abstract An arc by-product evacuation and neutralization system is disclosed. The system includes a vacuum cleaner having an input port for receiving air containing powdery arc by-products. The vacuum cleaner also includes a non-corrosive plastic tank containing an alkaline solution for neutralizing the powdery arc by-products. The neutralization is achieved by jet action causing the alkaline solution to be agitated thereby absorbing the powdery arc by-products.
Inventors
- 👤 Vasu H. Tahiliani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:35
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0071; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
173 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner type sweeper, said sweeper including a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, a vacuum pump mounted on the top of said tank for drawing corrosive powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated such that said alkaline solution absorbs said powdery arc by-products thereby sweeping and chemically neutralizing said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said cleansed air through said output port, said output port including a chemical filter to promote a chemical reaction and to prevent escape of trace quantities of said undesirable arc by-products.
Claim 2
Dependent Claim
173 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner type sweeper, said sweeper including a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, a vacuum pump mounted on the top of said tank for drawing corrosive powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated such that said alkaline solution absorbs said powdery arc by-products thereby sweeping and chemically neutralizing said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said cleansed air through said output port, said output port including a chemical filter to promote a chemical reaction and to prevent escape of trace quantities of said undesirable arc by-products.
Claim 3
Dependent Claim
191 words
A powdery arc-by product evaucation and neutralization system comprising a vacuum cleaner having a liquid containing an alkaline solution of soda lime and water, said liquid sump having an input port extending completely into said alkaline solution, an exhaust port, a vacuum pump mounted on the top of said vacuum cleaner for drawing air and powdery arc by-products through said input port such that said by-products are drawn completely into said liquid sump, said vacuum pump including agitation means including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated such that said alkaline solution absorbs said powdery arc by-products thereby sweeping and chemically neutralizing said by-products in one step, and means for exhausting the drawn air through said exhaust port, means for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, wherein the components of said system are made of corrosion-resistant plastic materials and wherein said output port includes a filter containing activated alumina and dry soda lime for preventing escape of trace quantities of said by-products through said output port.
Claim 4
Dependent Claim
191 words
A powdery arc-by product evaucation and neutralization system comprising a vacuum cleaner having a liquid containing an alkaline solution of soda lime and water, said liquid sump having an input port extending completely into said alkaline solution, an exhaust port, a vacuum pump mounted on the top of said vacuum cleaner for drawing air and powdery arc by-products through said input port such that said by-products are drawn completely into said liquid sump, said vacuum pump including agitation means including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated such that said alkaline solution absorbs said powdery arc by-products thereby sweeping and chemically neutralizing said by-products in one step, and means for exhausting the drawn air through said exhaust port, means for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, wherein the components of said system are made of corrosion-resistant plastic materials and wherein said output port includes a filter containing activated alumina and dry soda lime for preventing escape of trace quantities of said by-products through said output port.
Claim 5
Dependent Claim
177 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner having a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, an output port, a vacuum pump mounted on the top of said tank for drawing air and sweeping powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated so that said alkaline solution absorbs said powdery arc by-products for chemically reacting with and thereby sweeping and chemically neutralizing said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said air through said output port, said output port including a chemical filter to promote a chemical reaction and prevent escape of trace quantities of said undesirable arc by-products.
Claim 6
Dependent Claim
177 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner having a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, an output port, a vacuum pump mounted on the top of said tank for drawing air and sweeping powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated so that said alkaline solution absorbs said powdery arc by-products for chemically reacting with and thereby sweeping and chemically neutralizing said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature range of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said air through said output port, said output port including a chemical filter to promote a chemical reaction and prevent escape of trace quantities of said undesirable arc by-products.
Claim 7
Dependent Claim
180 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner having a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, an output port, a vacuum pump mounted on the top of said tank for sweeping powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including agitation means comprising a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated so that said alkaline solution absorbs said powdery arc by-products thereby chemically neutralizing and sweeping said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said drawn air through said output port, said output port including a chemical filter containing activated alumina and dry soda lime to promote a chemical reaction and to prevent escape of trace quantities of said undesirable arc by-products.
Claim 8
Dependent Claim
180 words
A powdery arc by-product evacuation and neutralization system comprising a vacuum cleaner having a non-corrosive plastic tank containing an alkaline solution, said plastic tank having an input port extending completely into said alkaline solution, an output port, a vacuum pump mounted on the top of said tank for sweeping powdery arc by-products through said input port such that said by-products are drawn completely into said alkaline solution, said vacuum pump including agitation means comprising a jet action fan extending completely into said alkaline solution for causing said alkaline solution to be agitated so that said alkaline solution absorbs said powdery arc by-products thereby chemically neutralizing and sweeping said by-products in one step, said plastic tank including a heater element for heating said alkaline solution to a predetermined temperature of approximately 40° C.-60° C. to bring about optimal chemical reaction, means for exhausting said drawn air through said output port, said output port including a chemical filter containing activated alumina and dry soda lime to promote a chemical reaction and to prevent escape of trace quantities of said undesirable arc by-products.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |