US3782325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding impregnation system
Assignee: RO BAND CORP
•
Filing: 1972-01-17
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Granted: 1974-01-01
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Expires: 1992-01-17
Abstract
Abstract An endless conveyor chain is fitted with a plurality of longitudinally spaced fixtures which are adapted to carry electrical motor windings. The windings are carried by the conveyor chain from a load/unload station through a horizontal heating chamber for preheating the windings, then under an applicator station which applies a varnish coating to the windings, then through a heating chamber which is disposed in a generally upright plane adjacent to the applicator station, and then through a diagonal heating chamber which extends diagonally from the top of the upright heating chamber to the load/unload station. The upright heating chamber is long enough to allow the varnish to jell on the windings so that there will be no drippage in the diagonal heating chamber. A drip pan is positioned under the applicator station and under the bottom end of the upright heating chamber to catch any drippage in those two areas, the heating means in the upright chamber being at a side of the upwardly moving windings so as to be out of the path of drippage.
Inventors
- 👤 L Farnsworth
- 👤 L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/02; B05B13/0221; B05B13/0235
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
298 words
Winding impregnation apparatus comprising an endless conveyor having means for supporting workpieces; means supporting said conveyor for movement in a triangular course, said triangular course including a horizontal base section, an upright section at one end of said base section, and an oblique section connecting the upright end of said upright section with the other end of said base section; means for causing the endless conveyor to travel in such a direction that the workpieces travel first through the horizontal section, then upwardly through the upright section, and then obliquely downwardly through the oblique section; pre-heating chambers for said base section through which said workpieces travel; an applicator chamber for said base section for applying thermosetting liquid coating material to said pre-heated workpieces, said applicator section being located between the pre-heating chambers and the lower end of said upright section; a heat-curing chamber for said upright section through which the coated workpieces are conveyed upwardly; heating means in said last-mentioned chamber positioned so that the workpieces are laterally-spaced from said heating means whereby any drippings fall downwardly in a path clear of the heating means while the workpieces are traveling upwardly through said heat curing chamber, said heat-curing chamber for the upright section being sufficiently high that jelling of the thermosetting material takes place before the workpieces leave the chamber for said oblique section; an additional heat-curing chamber for workpieces passing along said oblique section, which chamber terminates short of the lower end of said oblique section, said endless conveyor moving the workpieces through said oblique heatcuring chamber and the chamber being of sufficient length as to provide for proper curing of the coating material on the workpieces before they leave said last-mentioned heat-curing chamber; and an exposed loading-unloading station at the lower end of the oblique section.
Claim 2
Dependent Claim
298 words
Winding impregnation apparatus comprising an endless conveyor having means for supporting workpieces; means supporting said conveyor for movement in a triangular course, said triangular course including a horizontal base section, an upright section at one end of said base section, and an oblique section connecting the upright end of said upright section with the other end of said base section; means for causing the endless conveyor to travel in such a direction that the workpieces travel first through the horizontal section, then upwardly through the upright section, and then obliquely downwardly through the oblique section; pre-heating chambers for said base section through which said workpieces travel; an applicator chamber for said base section for applying thermosetting liquid coating material to said pre-heated workpieces, said applicator section being located between the pre-heating chambers and the lower end of said upright section; a heat-curing chamber for said upright section through which the coated workpieces are conveyed upwardly; heating means in said last-mentioned chamber positioned so that the workpieces are laterally-spaced from said heating means whereby any drippings fall downwardly in a path clear of the heating means while the workpieces are traveling upwardly through said heat curing chamber, said heat-curing chamber for the upright section being sufficiently high that jelling of the thermosetting material takes place before the workpieces leave the chamber for said oblique section; an additional heat-curing chamber for workpieces passing along said oblique section, which chamber terminates short of the lower end of said oblique section, said endless conveyor moving the workpieces through said oblique heatcuring chamber and the chamber being of sufficient length as to provide for proper curing of the coating material on the workpieces before they leave said last-mentioned heat-curing chamber; and an exposed loading-unloading station at the lower end of the oblique section.
Claim 3
Dependent Claim
41 words
Winding impregnation apparatus as claimed in claim 1 in which there is heating means on opposite sides of the heatcuring chamber for the upright section, with the workpieces conveyed in a path which is spaced from both of said heating means.
Claim 4
Dependent Claim
54 words
Winding impregnation apparatus as claimed in claim 2 in which the endless conveyor is supported for movement in a right-triangular course, with the horizontal base section being one of the legs of the right triangle, with the upright section being another leg of the right triangle, and with the oblique section being the hypotenuse.
Claim 5
Dependent Claim
95 words
Winding impregnation apparatus as claimed in claim 1 in which the thermosetting liquid coating material is varnish, and in which the heating means in the pre-heating chamber is designed to raise the temperature of the workpieces to a predetermined point, and in which the heating means in the heating chamber for the upright section is designed to raise the temperature of the workpieces to a predetermined higher point, with said upright chamber being high enough with respect to the temperature in said chamber to cause the varnish to jell before it leaves said upright section.
Claim 6
Dependent Claim
33 words
Winding impregnation apparatus as claimed in claim 1, including means for causing rotation of the workpieces as they are being conveyed, and means for eliminating said rotation during passage through the loading-unloading station.
References Cited (Backward Citations)
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |