US4898116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder coating booth
Assignee: Nihon Parkerizing Co Ltd
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Filing: 1988-09-07
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Granted: 1990-02-06
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Expires: 2008-09-07
Abstract
Abstract A powder coating booth a function of supplying air though its ceiling. Sidewalls of the booth is formed from an insulating material or a semiconductor. A belt conveyor is disposed at the bottom of the booth. An electric field is formed so that it extends from a paint gun to the conveyor belt. The majority of oversprayed powder paint produced during painting becomes attached to the upper surface of a portion of the conveyor belt, is carried, together with this belt portion, to the outside of the booth, and is recovered from the conveyor by a blowing-type of static eliminator, thereby minimizing the mount of oversprayed powder paint mixed in an exhaust of the booth drawn through the sidewall.
Inventors
- 👤 Katsutoshi Kozoe
- 👤 Nobuo Furuya
- 👤 Shinichi Kimura
- 👤 Yasunari Okamoto
- 👤 Mitsuyoshi Kumada
- 👤 Tatsuo Sugimoto
- 👤 Takehiko Ueno
- 👤 Kenjiro Shimizu
- 👤 Tsutomu Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:14
CPC Classifications
B; B05; B05C; B05C1/00; B05B; B05B14/00; B05B14/20; B05B14/40; B05B14/42; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
78 words
A powder coating booth comprising: a sidewall formed from an insulating material or a semiconductor; a ceiling having a function of downwardly supplying air; a bottom opened over a conveyor belt; means for forming an electric field extending to said conveyor; a suction device for drawing powder paint, said suction device being provided in said sidewall near said bottom; and a blowing-type static eliminator facing a portion of said conveyor belt positioned at a distance from said bottom.
Claim 2
Dependent Claim
78 words
A powder coating booth comprising: a sidewall formed from an insulating material or a semiconductor; a ceiling having a function of downwardly supplying air; a bottom opened over a conveyor belt; means for forming an electric field extending to said conveyor; a suction device for drawing powder paint, said suction device being provided in said sidewall near said bottom; and a blowing-type static eliminator facing a portion of said conveyor belt positioned at a distance from said bottom.
Claim 3
Dependent Claim
17 words
A powder coating booth according to claim 1, wherein said sidewall formed from a semiconductor is grounded.
Claim 4
Dependent Claim
21 words
A powder coating booth according to claim 1, wherein said conveyor belt is formed from an electroconductive material and is grounded.
Claim 5
Dependent Claim
17 words
A powder coating booth according to claim 2, wherein said sidewall formed from a semiconductor is grounded.
Claim 6
Dependent Claim
15 words
A powder coating booth according to claim 2, wherein said conductive conveyor belt is grounded.
Claim 7
Dependent Claim
17 words
A powder coating booth according to claim 3, wherein said sidewall formed from a semiconductor is grounded.
Claim 8
Dependent Claim
105 words
A powder coating booth comprising: a sidewall formed from an insulating material or a semiconductor; a ceiling having a function of downwardly supplying air; a bottom formed by an upper surface of a portion of a conveyor belt, a grounding plate being superposed on the reverse surface of said portion of said belt; a suction device for drawing powder paint, said suction device being provided in said sidewall near said bottom; a paint powder drawing device; and a blowing-type static eliminator, said paint powder drawing device and said blowing-type static eliminator facing a portion of said conveyor belt positioned at a distance from said bottom.
Claim 9
Dependent Claim
105 words
A powder coating booth comprising: a sidewall formed from an insulating material or a semiconductor; a ceiling having a function of downwardly supplying air; a bottom formed by an upper surface of a portion of a conveyor belt, a grounding plate being superposed on the reverse surface of said portion of said belt; a suction device for drawing powder paint, said suction device being provided in said sidewall near said bottom; a paint powder drawing device; and a blowing-type static eliminator, said paint powder drawing device and said blowing-type static eliminator facing a portion of said conveyor belt positioned at a distance from said bottom.
Claim 10
Dependent Claim
17 words
A powder coating booth according to claim 5, wherein said sidewall formed from a semiconductor is grounded.
Claim 11
Dependent Claim
36 words
A powder coating booth according to claim 7, wherein said powder paint drawing device is disposed on the upstream side of said blowing-type static eliminator relative to the direction of the movement of said conveyor belt.
Claim 12
Dependent Claim
17 words
A powder coating booth according to claim 6, wherein said sidewall formed from a semiconductor is grounded.
Claim 13
Dependent Claim
36 words
A powder coating booth according to claim 7, wherein said powder paint drawing device is disposed on the downstream side of said blowing-type static eliminator relative to the direction of the movement of said conveyor belt.
Claim 14
Dependent Claim
17 words
A powder coating booth according to claim 7, wherein said sidewall formed from a semiconductor is grounded.
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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |