US4440553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-filtration module with ionization for elimination of static electricity
Assignee: COMP-AIRE SYSTEMS Inc 4185 44TH ST KENTWOOD 49508
•
Filing: 1982-06-05
•
Granted: 1984-04-03
•
Expires: 2002-06-05
Abstract
Abstract A filtration module containing a filter element is provided with an ionization device on the outlet side of the filter module which utilizes the outlet grille and portions of the standard filter element as components of the ionization device.
Inventors
- 👤 Martin C. Helmus
- 👤 Wallace L. Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:56
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/14; B03C3/155; B03C3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
An air-filtration module having a housing provided with air-inlet means and an open outlet end; a filter element secured to said housing in said open end, said housing defining a space between said air-inlet means and said filter element; and grille means fixed with respect to said housing and defining an outlet for air emerging from said filter element, said grille means and filter element being spaced from each other in said housing to define a space free of filtration material, wherein the improvement comprises: an electrostatic ionization generator fixed with respect to said housing and interposed between said filter element and said grille means, said filter element and said grille means being formed of grounding material components so as to provide ground potential on opposite sides of said ionization generator.
Claim 2
Dependent Claim
131 words
An air-filtration module having a housing provided with air-inlet means and an open outlet end; a filter element secured to said housing in said open end, said housing defining a space between said air-inlet means and said filter element; and grille means fixed with respect to said housing and defining an outlet for air emerging from said filter element, said grille means and filter element being spaced from each other in said housing to define a space free of filtration material, wherein the improvement comprises: an electrostatic ionization generator fixed with respect to said housing and interposed between said filter element and said grille means, said filter element and said grille means being formed of grounding material components so as to provide ground potential on opposite sides of said ionization generator.
References Cited (Backward Citations)
US2933151A
Cited
US2979158A
Cited
US3073094A
Cited
US3438180A
Cited
US3973932A
Cited
US4026684A
Cited
US4140498A
Cited
US4265641A
Cited
US4357150A
Cited
US4333750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |