US4883506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic powder coating installation and method of operating the same
Assignee: Individual
•
Filing: 1988-04-28
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Granted: 1989-11-28
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Expires: 2008-04-28
Abstract
Abstract An electrostatic powder coating installation which includes a cabinet for accommodating a device for producing electrostatically charged powder, with a filter strip being disposed in the cabinet at a bottom end thereof. A suction system is provided which includes at least one movable suction nozzle and one suction air duct functionally connected with the suction nozzle with a suction blower. The suction nozzle is functionally connected with a drive belt, with the belt moving the nozzle transversely to the suction air duct. The suction nozzle is reciprocated by at least one motor driven belt, with the belt simultaneously serving as a sealing element for a slot provided along a length of the suction air duct.
Inventors
- 👤 Peter Ribnitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:20
CPC Classifications
B; B05; B05B; B05B14/00; B05B14/40; B05B14/45; B05B14/20; B05B14/43; B05B14/435; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
182 words
An electrostatic powder coating installation comprising a cabinet means, means disposed in said cabinet means for discharging electrostatically charged powder, open ended filter strip means located in a bottom area of an inner space of the cabinet means and maintained in a stationary position during a powder coating operation, respective rollers supporting each end of the filter strip means, a first exhaust fan means for producing a suction field with vacuum in the cabinet means through the filter strip means, cleaning means located in said cabinet means and associated with the filter strip means for removing surplus powder lying on the filter strip means, and means for driving said rollers for displacing the filter strip means for at least one length of the cabinet means only upon a pigment change in the powder so as to enable an assigning of a portion of the filter strip means to respective pigments in the powder, wherein said cleaning means comprises a suction nozzle means and means for moving the suction nozzle means in a direction of the filter strip means extending between said rollers.
Claim 2
Dependent Claim
182 words
An electrostatic powder coating installation comprising a cabinet means, means disposed in said cabinet means for discharging electrostatically charged powder, open ended filter strip means located in a bottom area of an inner space of the cabinet means and maintained in a stationary position during a powder coating operation, respective rollers supporting each end of the filter strip means, a first exhaust fan means for producing a suction field with vacuum in the cabinet means through the filter strip means, cleaning means located in said cabinet means and associated with the filter strip means for removing surplus powder lying on the filter strip means, and means for driving said rollers for displacing the filter strip means for at least one length of the cabinet means only upon a pigment change in the powder so as to enable an assigning of a portion of the filter strip means to respective pigments in the powder, wherein said cleaning means comprises a suction nozzle means and means for moving the suction nozzle means in a direction of the filter strip means extending between said rollers.
Claim 3
Dependent Claim
19 words
An electrostatic powder coating installation according to claim 1, further comprising a suction means adapted to be intermittingly operated.
Claim 4
Dependent Claim
32 words
An electrostatic powder coating installation according to claim 1, further comprising a fibrous web disposed beneath the filter strip means, and means for enabling a rolling and unrolling of the fibrous web.
Claim 5
Independent Claim
82 words
A method of operating an electrostatic powder coating installation, the method comprising the steps of providing a filter strip means in a cabinet means, maintaining the filter strip means in a stationary position during a powder coating operation, and moving the filter strip means through the cabinet means of the electrostatic powder coating installation only when a pigment of the powder changes so as to position a portion of the filter strip means associated with the new pigment inside the cabinet means.
Claim 6
Independent Claim
82 words
A method of operating an electrostatic powder coating installation, the method comprising the steps of providing a filter strip means in a cabinet means, maintaining the filter strip means in a stationary position during a powder coating operation, and moving the filter strip means through the cabinet means of the electrostatic powder coating installation only when a pigment of the powder changes so as to position a portion of the filter strip means associated with the new pigment inside the cabinet means.
Claim 7
Dependent Claim
17 words
A method according to claim 4, further comprising the step of intermittingly operating a suction nozzle means.
Claim 8
Dependent Claim
39 words
A method according to claim 4, further comprising the step of maintaining a sealed containment-catching container means at the same pressure level as an area containing a filter means and a powder sifting means of the powder coating installation.
Claim 9
Dependent Claim
153 words
A powder coating chamber for an electrostatic powder coating installation, the chamber including a trough portion, at least one filter means disposed above said trough portion, at least one suction nozzle means cooperable with said filter means for removing excess powder therefrom, means for intermittently reciprocably moving said at least one suction nozzle means with respect to said filter means including at least one belt means, a suction blower means, means connecting said suction blower means to said suction nozzle means, said connecting means including at least one air suction exhaust duct means, said at least one air suction exhaust duct means receiving excess powder from the at least one suction nozzle means and delivering the same out of the coating installation, and said at least one air suction exhaust duct means including a slot mean therein sealed by said at least one belt means except in the vicinity of said connecting means.
Claim 10
Dependent Claim
153 words
A powder coating chamber for an electrostatic powder coating installation, the chamber including a trough portion, at least one filter means disposed above said trough portion, at least one suction nozzle means cooperable with said filter means for removing excess powder therefrom, means for intermittently reciprocably moving said at least one suction nozzle means with respect to said filter means including at least one belt means, a suction blower means, means connecting said suction blower means to said suction nozzle means, said connecting means including at least one air suction exhaust duct means, said at least one air suction exhaust duct means receiving excess powder from the at least one suction nozzle means and delivering the same out of the coating installation, and said at least one air suction exhaust duct means including a slot mean therein sealed by said at least one belt means except in the vicinity of said connecting means.
Claim 11
Dependent Claim
76 words
A powder coating chamber according to claim 7, further comprising a transversely extending guide frame means for accommodating said at least one nozzle means, said guide frame means being connected to the at least one belt means in such a manner that a powder air stream passes through the at least one nozzle means and a portion of the guide frame means in each position and into said at least one air suction exhaust duct means.
Claim 12
Dependent Claim
50 words
A powder coating chamber according to claim 7, further comprising a guide frame means for accommodating the at least one nozzle means, said at least one nozzle means including a plurality of nozzle elements, and wherein lip means are provided for sealing said nozzle elements with respect to each other.
Claim 13
Dependent Claim
52 words
A powder coating chamber according to claim 7, wherein said slot means is a slot extending across an entire longitudinal section of the at least one air suction exhaust duct means, and wherein removable cover means are provided for sealing respective ends of said at least one air suction exhaust duct means.
Claim 14
Dependent Claim
61 words
A powder coating chamber according to claim 8, wherein an air suction exhaust duct means is provided on opposite sides of the chamber, and wherein additional nozzle means are provided for enabling an ultimate shifting of the suction from one of the air suction exhaust duct means on one side of the chamber to the other air suction exhaust duct means.
Claim 15
Dependent Claim
27 words
A powder coating chamber according to claim 7, further comprising a further connection means for enabling a connection with a suction hose means for cleaning the chamber.
Claim 16
Dependent Claim
19 words
A powder coating chamber according to claim 7, wherein the at least one drive belt is a toothed belt.
Claim 17
Dependent Claim
25 words
A powder coating chamber according to claim 7, wherein said means for reciprocably moving said at least one suction nozzle means includes a slip clutch.
Claim 18
Dependent Claim
122 words
A suction system for powder material of an electrostatic powder coating installation, the suction system including at least one movable suction nozzle means for removing excess powder from a powder coating chamber of the installation, at least one suction blower means connected to said at least one movable suction nozzle by way of connecting means, means for reciprocably moving said at least one suction nozzle means including at least one drive belt means, for moving the at least one nozzle means transversely with respect to an air suction channel of said connecting means having an opening extending along one longitudinal side thereof, which opening is sealed by said at least one drive belt means except in the vicinity of said connecting means.
Claim 19
Dependent Claim
122 words
A suction system for powder material of an electrostatic powder coating installation, the suction system including at least one movable suction nozzle means for removing excess powder from a powder coating chamber of the installation, at least one suction blower means connected to said at least one movable suction nozzle by way of connecting means, means for reciprocably moving said at least one suction nozzle means including at least one drive belt means, for moving the at least one nozzle means transversely with respect to an air suction channel of said connecting means having an opening extending along one longitudinal side thereof, which opening is sealed by said at least one drive belt means except in the vicinity of said connecting means.
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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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |