Patent US4750922A successfully refreshed from Google Patents.
US4750922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control for an air filtration system
Assignee: Individual
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Filing: 1987-07-10
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Granted: 1988-06-14
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Expires: 2007-07-10
Abstract
Abstract A remote control and monitor panel is operatively connected to an air filtration unit located within an enclosed contaminated space. The remote control and monitoring panel is located outside of the enclosed contaminated space so that the air filtration unit may be controlled and monitored without the necessity of entering the enclosed contaminated space where the filtration unit is located.
Inventors
- 👤 Steven C. Griffis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:46
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/50; F24F11/56; F24F8/00; F24F8/10; F24F2221/00; F24F2221/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
231 words
A system for removing dangerous solid materials from an enclosed contaminated area within a building, said system comprising: a wall means defining said enclosed contaminated area; said enclosed contaminated area having at least one air inlet associated therewith to permit air to enter said enclosed contaminated area; said wall means having at least one air outlet formed therein to permit air to exit said enclosed contaminated area; an air filtration unit located within said enclosed contaminated area; said filtration unit having an air inlet in communication with said enclosed contaminated area; said filtration unit having an air outlet in communication with the air outlet in said wall means; said filtration unit including means for creating a negative air pressure within said enclosed contaminated area for moving air through said filtration unit so that air will be drawn into said air inlet in said wall means, through said filtration unit, and thence through the air outlet in said wall means; means for sealing said air inlet in the event that negative air pressure is lost in said enclosed contaminated area; and remote control and monitoring means for controlling the operation of said filtration unit and for monitoring the operation of said filtration unit; said remote control and monitoring means being located outside of said enclosed contaminated area whereby said filtration unit may be operated and monitored without entering said enclosed contaminated area.
Claim 2
Independent Claim
231 words
A system for removing dangerous solid materials from an enclosed contaminated area within a building, said system comprising: a wall means defining said enclosed contaminated area; said enclosed contaminated area having at least one air inlet associated therewith to permit air to enter said enclosed contaminated area; said wall means having at least one air outlet formed therein to permit air to exit said enclosed contaminated area; an air filtration unit located within said enclosed contaminated area; said filtration unit having an air inlet in communication with said enclosed contaminated area; said filtration unit having an air outlet in communication with the air outlet in said wall means; said filtration unit including means for creating a negative air pressure within said enclosed contaminated area for moving air through said filtration unit so that air will be drawn into said air inlet in said wall means, through said filtration unit, and thence through the air outlet in said wall means; means for sealing said air inlet in the event that negative air pressure is lost in said enclosed contaminated area; and remote control and monitoring means for controlling the operation of said filtration unit and for monitoring the operation of said filtration unit; said remote control and monitoring means being located outside of said enclosed contaminated area whereby said filtration unit may be operated and monitored without entering said enclosed contaminated area.
Claim 3
Dependent Claim
87 words
The system of claim 1 wherein a clean room, a shower room and an equipment room are provided; said clean room having a first door means in communication with the area outside of said enclosed contaminated area, a second door means between said clean room and said shower room, a third door means between said shower room and said equipment room, and a fourth door means between said equipment room and said enclosed contaminated area, said remote control and monitoring means being located in said clean room.
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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |