US3898151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrocoating conductive articles including magnet means to convey the articles
Assignee: Diamond Shamrock Corp
•
Filing: 1973-06-18
•
Granted: 1975-08-05
•
Expires: 1993-06-18
Abstract
Abstract Apparatus is provided for obtaining the electrical deposition of a protective coating onto the surface of electrically conductive, magnetically-attractable metal articles. With the apparatus, a multitude of various articles, e.g., screws, clips, bolts, nails and the like, which may be in mixture, can be readily and efficiently coated in batch or continuous operation. The apparatus includes stationary magnet means in close proximity to a coating bath and having sufficient magnetic field strength to affect the location of coated parts in at least a zone of the coating bath. This stationary magnet means is together in assembly with rotatable, i.e., movable means, e.g., a drum member housing the magnet means. The rotatable means has a face element at least partly immersed in the bath. In rotation, this element provides for movement of articles within the bath while they are held under the influence of the magnetic field.
Inventors
- 👤 Joseph D Nessar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:30
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/16; C25D17/28
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
248 words
In apparatus adapted for establishing and interrupting contact between a plurality of discrete, magnetically-attractable and electrically-conductive metallic articles of manufacture and electrically deposited electrocoating composition, whereby applicator means serves to bring said plurality of articles into contact with the electrocoating composition, and wherein an electrode of said applicator means is adapted to convey an electrical charge to said articles in contact with electrocoating composition, while transporting means, adapted to carry wet, surface-coated articles, operates to carry said wet articles away from said coating composition, the improvement in adapting said apparatus for the coating of a plurality of articles of non-smooth configuration which comprises: A. magnet means spaced away from said electrode that conveys electrical charge to said articles in contact with electrocoating composition, said magnet means being arranged in close proximity to the path of travel of said articles in contact with the electrocoating composition, and being adapted to act on wet, coated articles and thereby influence their path of travel; said magnet means cooperating with B. rotatable means proximate to said magnet means; and having, C. a non-magnetic, rotatable and continuous face element spaced apart from said magnet means and in continuous exposure to the electrocoating composition, said face element being adapted to provide movement of a plurality of wet, coated articles within the electrocoating composition, and away from said applicator means, with said wet and coated articles being attracted into contact with said face element while said articles are under the influence of the magnetic field.
Claim 2
Dependent Claim
248 words
In apparatus adapted for establishing and interrupting contact between a plurality of discrete, magnetically-attractable and electrically-conductive metallic articles of manufacture and electrically deposited electrocoating composition, whereby applicator means serves to bring said plurality of articles into contact with the electrocoating composition, and wherein an electrode of said applicator means is adapted to convey an electrical charge to said articles in contact with electrocoating composition, while transporting means, adapted to carry wet, surface-coated articles, operates to carry said wet articles away from said coating composition, the improvement in adapting said apparatus for the coating of a plurality of articles of non-smooth configuration which comprises: A. magnet means spaced away from said electrode that conveys electrical charge to said articles in contact with electrocoating composition, said magnet means being arranged in close proximity to the path of travel of said articles in contact with the electrocoating composition, and being adapted to act on wet, coated articles and thereby influence their path of travel; said magnet means cooperating with B. rotatable means proximate to said magnet means; and having, C. a non-magnetic, rotatable and continuous face element spaced apart from said magnet means and in continuous exposure to the electrocoating composition, said face element being adapted to provide movement of a plurality of wet, coated articles within the electrocoating composition, and away from said applicator means, with said wet and coated articles being attracted into contact with said face element while said articles are under the influence of the magnetic field.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said applicator means includes a tank member for retaining a bath of said electrocoating composition in contact with the articles.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein said rotatable means includes a rotatable drum.
Claim 5
Dependent Claim
34 words
The apparatus of claim 3 wherein said magnet means includes at least one interior magnet within said drum and said interior magnet has an arcuate surface in concentric relationship spaced apart from said drum.
Claim 6
Dependent Claim
30 words
The apparatus of claim 3 wherein said applicator means includes electrocoating supply means adapted to provide sufficient coating composition for partial immersion of said rotatable drum in said coating composition.
Claim 7
Dependent Claim
25 words
The apparatus of claim 1 wherein said rotatable means includes at least two rotatable members and said members have a continuous, non-magnetic belt around same.
Claim 8
Dependent Claim
31 words
The apparatus of claim 1 further characterized by demagnetizing means spaced away from said rotatable means and proximately adjacent to the path of travel of coated articles leaving said rotatable means.
Claim 9
Dependent Claim
222 words
APPARATUS CONSTRUCTED TO PROVIDE ELECTRICALLY-INDUCED CONTEMPORANEOUS DEPOSITION OF A COATING FROM A LIQUID ELECTROCATING BATH UPON A PLURALITY OF DISCRETE, ELECTRICALLY-CONDUCTIVE AND MAGNETICALLY-ATTACHTABLE METALLIC ARTICLES AND BEING ADAPTED FOR THE ELLECTROCOATING OF SAID ARTICLES OF NONSMOOTH CONFIGURATION, WHICH APPARATUS COMPRISES: A. A TANK ADAPTED TO RETAIN A BATH OF LIQUID ELECTROCOATING MATERIAL, B. DELIVERY MEANS CONSTRUCTED FOR FEEDING A PLURALITY OF SAID METALLIC ARTICLES INTO THE TANK AND THEREBY INTO SUBMERSION IN A COATING ZONE OF LIQUID MATERIAL, C. ELECTRICAL MEANS ADAPTED TO PROVIDE A FLOW OF ELECTRICAL ENERGY THROUGH THE COATING ZONE OF THE BATH AND THROUGH ELECTRICALLY CONDUCTIVE ARTICLES LOCATED THEREIN, RESULTING IN COATED METALLIC ARTICLES THEREIN, D. MAGNET MEANS SPACED AWAY FROM SAID ELECTRICAL MEAN, BUT BEING ARRANGED IN CLOSE PROXIMITY TO THE METALLIC ARTICLES, SAID MAGNET MEANS HAVING SUFFICIENT FIELD STRENGTH TO INFLUENCE THE LOCUS OF SAID ARTICLES IN SAID PORTION OF THE ZONE, SAID MAGNET MEANS COOPERATING WITH, E. ROTATABLE MEANS PROXIMATE TO SAID MAGNET MEANS, AND HAVING F. A NON-MAGNETIC, ROTATABLE AND CONTINUOUS FACE ELEMENT SPACED APART FROM SAID MAGNET MEANS AND ADAPTED TO BE IN CONTINUOUS EXPOSURE TO SAID ELECTROCOATING COMPOSITION, WHICH FACE ELEMENT COOPERATES WITH SAID MAGNET MEANS AND IN ROTATION PROVIDES MOVEMENT OF WETTED ARTICLES ATTRACTED INTO CONTACT WITH SAID FACE ELEMENT WHILE SAID ARTICLES ARE UNDER THE INFLUENCE OF THE MAGNETIC FIELD.
Claim 10
Dependent Claim
222 words
APPARATUS CONSTRUCTED TO PROVIDE ELECTRICALLY-INDUCED CONTEMPORANEOUS DEPOSITION OF A COATING FROM A LIQUID ELECTROCATING BATH UPON A PLURALITY OF DISCRETE, ELECTRICALLY-CONDUCTIVE AND MAGNETICALLY-ATTACHTABLE METALLIC ARTICLES AND BEING ADAPTED FOR THE ELLECTROCOATING OF SAID ARTICLES OF NONSMOOTH CONFIGURATION, WHICH APPARATUS COMPRISES: A. A TANK ADAPTED TO RETAIN A BATH OF LIQUID ELECTROCOATING MATERIAL, B. DELIVERY MEANS CONSTRUCTED FOR FEEDING A PLURALITY OF SAID METALLIC ARTICLES INTO THE TANK AND THEREBY INTO SUBMERSION IN A COATING ZONE OF LIQUID MATERIAL, C. ELECTRICAL MEANS ADAPTED TO PROVIDE A FLOW OF ELECTRICAL ENERGY THROUGH THE COATING ZONE OF THE BATH AND THROUGH ELECTRICALLY CONDUCTIVE ARTICLES LOCATED THEREIN, RESULTING IN COATED METALLIC ARTICLES THEREIN, D. MAGNET MEANS SPACED AWAY FROM SAID ELECTRICAL MEAN, BUT BEING ARRANGED IN CLOSE PROXIMITY TO THE METALLIC ARTICLES, SAID MAGNET MEANS HAVING SUFFICIENT FIELD STRENGTH TO INFLUENCE THE LOCUS OF SAID ARTICLES IN SAID PORTION OF THE ZONE, SAID MAGNET MEANS COOPERATING WITH, E. ROTATABLE MEANS PROXIMATE TO SAID MAGNET MEANS, AND HAVING F. A NON-MAGNETIC, ROTATABLE AND CONTINUOUS FACE ELEMENT SPACED APART FROM SAID MAGNET MEANS AND ADAPTED TO BE IN CONTINUOUS EXPOSURE TO SAID ELECTROCOATING COMPOSITION, WHICH FACE ELEMENT COOPERATES WITH SAID MAGNET MEANS AND IN ROTATION PROVIDES MOVEMENT OF WETTED ARTICLES ATTRACTED INTO CONTACT WITH SAID FACE ELEMENT WHILE SAID ARTICLES ARE UNDER THE INFLUENCE OF THE MAGNETIC FIELD.
Claim 11
Dependent Claim
13 words
The apparatus of claim 8 wherein said rotatable means includes a rotatable drum.
Claim 12
Dependent Claim
34 words
The apparatus of claim 9 wherein said magnet means includes at least one interior magnet within said drum and said interior magnet has an arcuate surface in concentric relationship spaced apart from said drum.
Claim 13
Dependent Claim
29 words
The apparatus of claim 9 wherein said rotatable drum serves as an electrode in the means providing a flow of electrical energy through the coating zone of the bath.
Claim 14
Dependent Claim
21 words
The apparatus of claim 8 wherein said rotatable means includes at least two rotatable members and said magnetic belt around same.
Claim 15
Dependent Claim
31 words
The apparatus of claim 8 wherein said rotatable means is adapted to interrupt continuing contact between coated articles and said bath and to convey wet, coated articles away from the bath.
Claim 16
Dependent Claim
30 words
The apparatus of claim 8 further characterized by demagnetizing means spaced away from said rotatable means and proximate to the path of travel of wet articles leaving said rotatable means.
Claim 17
Dependent Claim
22 words
The apparatus of claim 8 further characterized by conveying means constructed and arranged to carry wet articles away from said rotatable means.
Claim 18
Dependent Claim
20 words
The apparatus of claim 15 further characterized by rinsing means to which wet articles are transported on said conveying means.
Claim 19
Dependent Claim
36 words
The apparatus of claim 8 wherein said tank is an electrode in the means providing electrical energy through the coating zone of said bath and the flow of electrical energy thereto is a direct current flow.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |