Patent US4543908A successfully refreshed from Google Patents.
US4543908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material for filtering spray coating particles from air
Assignee: STANSBURY THOMAS A
•
Filing: 1982-09-29
•
Granted: 1985-10-01
•
Expires: 2002-09-29
Abstract
Abstract A conductive filter material or cloth is utilized in spray booths, (1) to eliminate "bleed through" due to electrostatic force to grounded supporting structure, (2) to reduce clogging of the openings between the fibers of the filter material, and (3) to eliminate the possibility of arcing in low humidity and highly volatile solvent conditions.
Inventors
- 👤 Arvid C. Walberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:34
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B05; B05B; B05B14/00; B05B14/40; B05B14/42; B01D2201/00; B01D2201/50; B01D2239/00; B01D2239/02; B01D2239/0241; B01D2239/04; B01D2239/0471; B01D2239/0478; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/0668
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A spray booth comprising: (a) a moveable wall having a continuous flexible mat of closely spaced fibers forming a multiplicity of cells, (b) a multiplicity of randomly positioned fibers extending from the mat into each said cell with a multiplicity of random sub-cells, (c) a conductive coating covering said mat and randomly positioned fibers, (d) a conductive backup structure supporting said continuous flexible mat, and (e) means connected to said continuous mat to electrically ground said continuous flexible mat and said conductive backup structure.
Claim 2
Dependent Claim
84 words
A spray booth comprising: (a) a moveable wall having a continuous flexible mat of closely spaced fibers forming a multiplicity of cells, (b) a multiplicity of randomly positioned fibers extending from the mat into each said cell with a multiplicity of random sub-cells, (c) a conductive coating covering said mat and randomly positioned fibers, (d) a conductive backup structure supporting said continuous flexible mat, and (e) means connected to said continuous mat to electrically ground said continuous flexible mat and said conductive backup structure.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |