US3640758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating the interiors of hollow bodies
Assignee: Nordson Corp
•
Filing: 1970-03-05
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Granted: 1972-02-08
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Expires: 1990-03-05
Abstract
Abstract Method and means for coating the interior cylindrical surface of objects such as metal cans for food, beverages and other substances which need protection against injurious reaction with or pollution from contact with the material of the can. Airless spray coating of such surfaces revolving at high speed by stationary spray nozzles external of the can. The nozzles project impinging airless sprays having desirable patterns through respective ends of open ended can cylinders into longitudinally elongated contact with the interior surface.
Inventors
- 👤 Edwin F Hogstrom
- 👤 William C Stumphauzer
- 👤 Eric T Nord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/02; B05B1/04; B05B13/00; B05B13/06; B05B13/0609
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
28 words
The method of claim 1 with the step of projecting said spray while removing said object a fraction of a revolution more than an integral number of revolutions.
Claim 2
Dependent Claim
52 words
The method of claim 1 with the step of rotating said object at a speed sufficient to provide centrifugal force upon the coating material while the material is being projected upon said surface and while it is in a mobile state tending to aid in uniformity of distribution thereof throughout said surface.
Claim 3
Dependent Claim
13 words
The method of claim 1 with the step of projecting said sprays simultaneously.
Claim 4
Dependent Claim
18 words
The method of claim 1 with the step of projecting said sprays in aligned opposition and mutual impingement.
Claim 5
Dependent Claim
34 words
The method of claim 1 with the step of inclining said sprays to have a tangential component moving at the places of contact with said surface opposite the direction of movement of said surface.
Claim 6
Dependent Claim
17 words
The method of claim 6 with the step of projecting said sprays simultaneously and into mutual opposition.
Claim 7
Dependent Claim
35 words
The method of claim 1 with the step of spraying said material for about 3 revolutions of the object and depositing from about 4 to 9 milligrams per square inch of material over said surface.
Claim 8
Dependent Claim
25 words
The method of claim 8 with the step of spraying said material during a fraction of a revolution more than an integral number of revolutions.
Claim 9
Dependent Claim
49 words
The method of claim 9 with the step of rotating said object at a speed sufficient to provide appreciable centrifugal force upon the coating material, imposing said force upon the material as long as it is in a mobile state and inducing uniformity of distribution thereof throughout said surface.
Claim 10
Dependent Claim
26 words
The method of claim 1 wherein the spray patterns are substantially fan shaped and are sprayed into substantially lineal contact with the interior of said object.
Claim 11
Dependent Claim
29 words
The method of claim 11 with the step of inclining said fans to have a tangential component at said line of contact moving opposite the movement of said surface.
Claim 12
Dependent Claim
27 words
The method of claim 11 with the step of spraying said material during an integral number of revolutions of said object plus a fraction of a revolution.
Claim 13
Dependent Claim
43 words
The method of claim 11 with the step of rotating said object at a speed sufficienT to impose centrifugal force upon the coating material while it is in a mobile state tending to aid in the uniformity of distribution thereof throughout said surface.
Claim 14
Dependent Claim
13 words
The method of claim 11 with the step of projecting said fans simultaneously.
Claim 15
Dependent Claim
18 words
The method of claim 11 with the step of projecting said fans in aligned opposition and mutual impingement.
Claim 16
Dependent Claim
35 words
The method of claim 11 with the step of spraying said material for about 3 revolutions of the object and depositing from about 4.5 to 6.5 milligrams per square inch of material over said surface.
Claim 17
Dependent Claim
24 words
The method of claim 17 with the step of revolving said object a fraction of a revolution more than an integral number of revolutions.
Claim 18
Dependent Claim
45 words
The method of claim 18 with the step of rotating said object at a speed sufficient to impose appreciable centrifugal force upon the coating material while the material is in a mobile state tending to aid in the uniformity of distribution thereof throughout said surface.
Claim 19
Dependent Claim
13 words
The method of claim 19 with the step of projecting said fans simultaneously.
Claim 20
Dependent Claim
18 words
The method of claim 20 with the step of projecting said fans in aligned opposition and mutual impingement.
References Cited (Backward Citations)
US2848819A
Cited
US3081947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |