US3570451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enameling apparatus
Assignee: Porcher SA
•
Filing: 1967-09-12
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Granted: 1971-03-16
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Expires: 1987-09-12
Abstract
Abstract A method and apparatus for enameling metallic products such as cast iron bathtubs wherein the product to be enameled is mechanically conveyed to a preheating tunnel furnace where it remains sufficiently to reach a desired temperature. Then the product is automatically conveyed to a dredging station and oscillated during which enamel is mechanically distributed on the entire product from a dredging element which moves relative to the movement of the product. After application of the enamel, the product is conveyed to an enamel firing furnace and finally it is conveyed to a cooling station.
Inventors
- 👤 Robert Le Heron
- 👤 Harold Le Heron
- 👤 Frederic Lebouchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:18
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/04; C23D9/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
201 words
A device for movably supporting a workpiece during an enameling or other material application process for evenly presenting various surfaces of the workpiece to an enamel or other material applicator; the device comprising in combination, a workpiece support member adapted to receive the workpiece, a first shaft secured to the workpiece support member generally at a central portion thereof, a casing having means mounting said first shaft for rotatable movement about the axis of said first shaft in one angular direction to rotate said workpiece support member in said one angular direction, a second shaft and means mounting said second shaft for rotation about its own axis spaced from and parallel to said first shaft, means connecting said casing to said second shaft to be rotatable by sAid second shaft in a second angular direction counter to said first angular direction to revolve said workpiece support member in said angular direction about said second shaft, gear means located in said casing interconnecting said second shaft and said first shaft to transmit motion from said second shaft to said first shaft to drive said first shaft in said first angular direction, and means for driving said second shaft about its own axes.
Claim 2
Independent Claim
201 words
A device for movably supporting a workpiece during an enameling or other material application process for evenly presenting various surfaces of the workpiece to an enamel or other material applicator; the device comprising in combination, a workpiece support member adapted to receive the workpiece, a first shaft secured to the workpiece support member generally at a central portion thereof, a casing having means mounting said first shaft for rotatable movement about the axis of said first shaft in one angular direction to rotate said workpiece support member in said one angular direction, a second shaft and means mounting said second shaft for rotation about its own axis spaced from and parallel to said first shaft, means connecting said casing to said second shaft to be rotatable by sAid second shaft in a second angular direction counter to said first angular direction to revolve said workpiece support member in said angular direction about said second shaft, gear means located in said casing interconnecting said second shaft and said first shaft to transmit motion from said second shaft to said first shaft to drive said first shaft in said first angular direction, and means for driving said second shaft about its own axes.
Claim 3
Dependent Claim
34 words
The device defined in claim 1 further including a frame supporting said second shaft, and means adjustably mounting said frame in an angular position for supporting the workpiece at an angle to the horizontal.
Claim 4
Dependent Claim
29 words
The device defined in claim 1 wherein said workpiece support member includes a bathtub holder having shape similar to a bathtub for receiving therein a bathtub to be enameled.
Claim 5
Dependent Claim
36 words
In combination with the device defined in claim 1, a screen for distributing an enameling substance to a workpiece, means supporting said screen in a position to overlie the workpiece, and means for vibrating the screen.
Claim 6
Dependent Claim
30 words
The combination defined in claim 4 further including a second screen for distributing enamel substance on the workpiece, and means for moving said second screen in translation over the workpiece.
Claim 7
Dependent Claim
34 words
The combination defined in claim 5 further including means synchronizing movement of said screens with movement of said supports, said last recited means including cams operated by said means for rotating said second support
Claim 8
Dependent Claim
20 words
The combination defined in claim 4 further including an aspirator hood having a filter located above said workpiece support member.
Claim 9
Dependent Claim
47 words
The combination defined in claim 4 wherein said means supporting said screen includes a conveyor movable between a retracted position away from said workpiece support member and an operative position adjacent said workpiece support with the screen extending at least partially over a portion of said workpiece.
Claim 10
Dependent Claim
52 words
The combination defined in claim 8 further including an enamel discharge means mounted on said conveyor, a supply containing enamel substance, and a flexible conduit interconnecting said supply and said discharge means, said discharge being positioned to introduce enamel substance onto said first screen for distribution on the workpiece to be enameled.
Claim 11
Dependent Claim
22 words
The device defined in claim 1 further including means for driving said first shaft at one-half the speed of said second shaft.
Claim 12
Dependent Claim
166 words
A powdering table for use in powder enameling of bath tubs and similar objects with an elongated shape, of the type wherein the table has a central shaft and is set at an inclined position of about 45* under a stationary powdering device and turned around the axis of its central shaft; the apparatus comprising a gear casing having means mounting said central shaft for rotation therein, a second shaft spaced from and parallel to said first shaft, means mounting said casing about said second shaft for rotation about the axis of said second shaft, and means for rotating said casing about the axis of said second shaft in the opposite direction and at twice the speed of rotation of the table about the axes of its central shaft, with a distance between the two parallel shafts determined so that at during each complete revolution of the table the inside surface of a bathtub supported on the table will pass substantially directly under the powdering device.
Claim 13
Dependent Claim
166 words
A powdering table for use in powder enameling of bath tubs and similar objects with an elongated shape, of the type wherein the table has a central shaft and is set at an inclined position of about 45* under a stationary powdering device and turned around the axis of its central shaft; the apparatus comprising a gear casing having means mounting said central shaft for rotation therein, a second shaft spaced from and parallel to said first shaft, means mounting said casing about said second shaft for rotation about the axis of said second shaft, and means for rotating said casing about the axis of said second shaft in the opposite direction and at twice the speed of rotation of the table about the axes of its central shaft, with a distance between the two parallel shafts determined so that at during each complete revolution of the table the inside surface of a bathtub supported on the table will pass substantially directly under the powdering device.
Claim 14
Dependent Claim
71 words
The apparatus defined in claim 11 including means for driving said second shaft in rotation and wherein said means for rotating said casing includes means operatively interconnecting said second shaft and said casing to drive the casing in response to rotation of said second shaft, and wherein there is further included gear means in said casing for driving said central shaft in response to movement of said second shaft and casing.
Claim 15
Dependent Claim
141 words
Apparatus defined in claim 12 wherein there is further included a third shaft mounted in said casing parallel to said central and second shafts, said casing is made up of upper and lower parts, said lower part being driven by said second shaft and said upper part having said central shaft mounted therein and being coupled on said lower part for adjustment about said third shaft to vary the distance between said central and second shafts, said gear means including a first gear fixed to said central shaft concentrically therewith, and a second gear fixed to said third shaft in mesh with said first gear, and wherein said means operatively interconnecting said second shaft and said casing includes a third gear fixed to said second shaft and a fourth gear fixed to said third shaft in mesh with said third gear.
Claim 16
Dependent Claim
24 words
The apparatus defined in claim 13 including means for locking the upper part of said casing relative to said lower part in adjusted position.
Claim 17
Dependent Claim
22 words
The apparatus defined in claim 11 further includes means for adjusting the distance between the axes of said central and second shafts.
References Cited (Backward Citations)
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US2821158A
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US2926627A
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US3132038A
Cited
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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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |