US3859113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for applying compound and post end repair coating to can ends
Assignee: Nordson Corp
•
Filing: 1972-04-21
•
Granted: 1975-01-07
•
Expires: 1992-04-21
Abstract
Abstract A method and apparatus for applying both a layer of resilient sealing compound to the curls of ends of cans and a thin layer of end repair coating over the inside bottom surface of can ends before the ends are assembled onto the body. The compound is applied by forcing it as a very heavy viscous liquid under high pressure through an extrusion nozzle under conditions which result in a coating of compound being evenly applied to a peripheral groove of the rotating can ends while simultaneously the end repair coating is sprayed onto the inside bottom surface. In the preferred embodiment both the compound and the end repair material are applied to the can end while it is rotated in a vertical plane about a horizontal axis.
Inventors
- 👤 Richard A Horvath
- 👤 William C Stumphauzer
- 👤 Edwin F Hogstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:44
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/02; B05C5/0208; B05C5/0212; B05C5/0216; B05B; B05B13/00; B05B13/02; B05B13/0278; B05D; B05D1/00; B05D1/002; B05D1/34
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
147 words
THE METHOD OF APPLYING TWO DISSIMILAR MATERIALS TO SEPARATE AREAS OF A CAN END, WHICH MATERIALS HAVE DIFFERING CURING TEMPERATURES, WHICH METHOD COMPRISES ROTATING A CAN END RELATIVE TO TWO STATIONARY NOZZLES LOCATED AT A SINGLE SPRAY STATION, EJECTING ONE OF SAID MATERIALS AS A LIQUID SPRAY FROM ONE OF SAID NOZZLES ONTO LTHE BOTTOM SURFACE OF SAID CAN END WHILE SAID CAN END IS ROTATING AT SAID STATION, EJECTING THE OTHER OF SAID MATERIALS FROM THE OTHER OF SAID NOZZLES INTO THE CURL OF SAID CAN END WHILE SAID CAN END IS ROTATING AT SAID STATION, AND SEQUENTIALLY EXPOSING BOTH OF SAID MATERIALS ON SAID CAN END TO A FIRST LOW TEMPERATURE SOURCE OF HEAT TO CURE ONE OF SAID MATERIALS, AND THEN SUBSQUENTLY EXPOSING SAID MATERALS ON SAID CAN END TO A SECOND HIGHER TEMPERATURE SOURCE OF HEAT TO CURE THE OTHER OF SAID MATERIALS.
Claim 2
Independent Claim
147 words
THE METHOD OF APPLYING TWO DISSIMILAR MATERIALS TO SEPARATE AREAS OF A CAN END, WHICH MATERIALS HAVE DIFFERING CURING TEMPERATURES, WHICH METHOD COMPRISES ROTATING A CAN END RELATIVE TO TWO STATIONARY NOZZLES LOCATED AT A SINGLE SPRAY STATION, EJECTING ONE OF SAID MATERIALS AS A LIQUID SPRAY FROM ONE OF SAID NOZZLES ONTO LTHE BOTTOM SURFACE OF SAID CAN END WHILE SAID CAN END IS ROTATING AT SAID STATION, EJECTING THE OTHER OF SAID MATERIALS FROM THE OTHER OF SAID NOZZLES INTO THE CURL OF SAID CAN END WHILE SAID CAN END IS ROTATING AT SAID STATION, AND SEQUENTIALLY EXPOSING BOTH OF SAID MATERIALS ON SAID CAN END TO A FIRST LOW TEMPERATURE SOURCE OF HEAT TO CURE ONE OF SAID MATERIALS, AND THEN SUBSQUENTLY EXPOSING SAID MATERALS ON SAID CAN END TO A SECOND HIGHER TEMPERATURE SOURCE OF HEAT TO CURE THE OTHER OF SAID MATERIALS.
Claim 3
Dependent Claim
29 words
The method of claim 1 in which said can end is rotated about a horizontal axis at said spray station while said materials are ejected onto said rotating end.
Claim 4
Independent Claim
155 words
The method of applying can end repair coating material and sealing compound material to separate areas of a can end, which materials have differing curing temperatures, which method comprises rotating a can end relative to two stationary nozzles located at a single spray station, ejecting said can end repair coating material as a liquid atomized spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, extruding said sealing compound material from the other of said nozzles into the Curl of said can end while said can end is rotating at said station, and sequentially exposing both of said materials on said end to a first low temperature source of heat to cure said sealing compound material, and then subsequently exposing said materials on said can ends to a second higher temperature source of heat to cure said can end repair coating material.
Claim 5
Independent Claim
155 words
The method of applying can end repair coating material and sealing compound material to separate areas of a can end, which materials have differing curing temperatures, which method comprises rotating a can end relative to two stationary nozzles located at a single spray station, ejecting said can end repair coating material as a liquid atomized spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, extruding said sealing compound material from the other of said nozzles into the Curl of said can end while said can end is rotating at said station, and sequentially exposing both of said materials on said end to a first low temperature source of heat to cure said sealing compound material, and then subsequently exposing said materials on said can ends to a second higher temperature source of heat to cure said can end repair coating material.
Claim 6
Dependent Claim
29 words
The method of claim 3 in which said can end is rotated about a horizontal axis at said spray station while said materials are applied onto said rotating end.
Claim 7
Dependent Claim
36 words
The method of claim 4 in which said sealing compound is extruded from the other of said nozzles at a pressure of at least 250 p.s.i. and through a nozzle orifice of less than 0.025-inch diameter.
Claim 8
Independent Claim
101 words
The method of applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which method comprises rotating a can end relative to two stationary nozzles located at a single spray station, ejecting one of said materials as a liquid atomized spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, and extruding the other of said materials from the other of said nozzles into the curl of said can end while said can end is continuing to rotate at said station.
Claim 9
Independent Claim
101 words
The method of applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which method comprises rotating a can end relative to two stationary nozzles located at a single spray station, ejecting one of said materials as a liquid atomized spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, and extruding the other of said materials from the other of said nozzles into the curl of said can end while said can end is continuing to rotate at said station.
Claim 10
Dependent Claim
28 words
The method of claim 6 in which said end is rotated about a horizontal axis at said spray station while said materials are ejected onto said rotating end.
Claim 11
Independent Claim
104 words
The method of applying sealing compound material as a thin film in the curl and beneath the curl lip of a can end, which method comprises rotating the can end at high speed about a horizontal axis relative to an extrusion nozzle, extruding said material in a generally horizontal direction at a pressure of between approximately 250 p.s.i. and 800 p.s.i. from said nozzle into the curl of said can end while said can end is rotating about said horizontal axis at said station so that material splay, gravity and centrifugal force all act to move said compound beneath a lip of said curl.
Claim 12
Independent Claim
104 words
The method of applying sealing compound material as a thin film in the curl and beneath the curl lip of a can end, which method comprises rotating the can end at high speed about a horizontal axis relative to an extrusion nozzle, extruding said material in a generally horizontal direction at a pressure of between approximately 250 p.s.i. and 800 p.s.i. from said nozzle into the curl of said can end while said can end is rotating about said horizontal axis at said station so that material splay, gravity and centrifugal force all act to move said compound beneath a lip of said curl.
Claim 13
Dependent Claim
20 words
The method of claim 8 in which said material is extruded from a nozzle orifice of less than 0.025-inch diameter.
Claim 14
Dependent Claim
183 words
Apparatus for applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said nozzles at said station, means for ejecting one of said materials as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said end is rotating at said station, means for ejecting the other of said materials from the other of said nozzles onto the curl of said can end while said can end is rotating at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle, and means for sequentially exposing both of said materials on said can end within an enclosed area to a first low temperature source of heat to cure one of said materials, and then subsequently exposing said materials on said can end within a second enclosed area to a second higher temperature source of heat to cure the other of said materials.
Claim 15
Dependent Claim
183 words
Apparatus for applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said nozzles at said station, means for ejecting one of said materials as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said end is rotating at said station, means for ejecting the other of said materials from the other of said nozzles onto the curl of said can end while said can end is rotating at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle, and means for sequentially exposing both of said materials on said can end within an enclosed area to a first low temperature source of heat to cure one of said materials, and then subsequently exposing said materials on said can end within a second enclosed area to a second higher temperature source of heat to cure the other of said materials.
Claim 16
Dependent Claim
35 words
The apparatus of claim 10 in which said can end rotating means is operable to rotate said end about a horizontal axis at said spray station while said materials are ejected onto said rotating end.
Claim 17
Dependent Claim
186 words
Apparatus for applying can end repair coating material and sealing compound material to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said nozzles at said station, means for ejecting said can end repair coating material as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, means for extruding said sealing compound material from the other of said nozzles onto the curl of said can end while said can end is rotating at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle, and means for sequentially exposing both of said materials on said can end within a generally enclosed area to a first low temperature source of heat to cure said sealing compound material, and then subsequently exposing said materials on said end to a second higher temperature source of heat to cure said end repair coating material.
Claim 18
Dependent Claim
186 words
Apparatus for applying can end repair coating material and sealing compound material to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said nozzles at said station, means for ejecting said can end repair coating material as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, means for extruding said sealing compound material from the other of said nozzles onto the curl of said can end while said can end is rotating at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle, and means for sequentially exposing both of said materials on said can end within a generally enclosed area to a first low temperature source of heat to cure said sealing compound material, and then subsequently exposing said materials on said end to a second higher temperature source of heat to cure said end repair coating material.
Claim 19
Dependent Claim
35 words
The apparatus of claim 12 in which said can end rotating means is operable to rotate said end about a horizontal axis at said spray station while said materials are applied onto said rotating end.
Claim 20
Dependent Claim
42 words
The apparatus of claim 13 in which said sealing compound extruding means is operable to extrude said compound from the other of said nozzles at a pressure of at least 250 p.s.i. and through a nozzle orifice of less than 0.025-inch diameter.
Claim 21
Dependent Claim
128 words
Apparatus for applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said stationary nozzles at said spray station, means for ejecting one of said materials as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, and means for extruding the other of said materials from the other of said nozzles onto the curl of said can end while said can end is continuing to rotate at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle.
Claim 22
Dependent Claim
128 words
Apparatus for applying two dissimilar materials to separate areas of a can end, which materials have differing curing temperatures, which apparatus comprises at least two stationary nozzles located at a single spray station, means for rotating a can end relative to said stationary nozzles at said spray station, means for ejecting one of said materials as an airless liquid spray from one of said nozzles onto the bottom surface of said can end while said can end is rotating at said station, and means for extruding the other of said materials from the other of said nozzles onto the curl of said can end while said can end is continuing to rotate at said station, said other of said nozzles being a high pressure, small orifice, extrusion nozzle.
Claim 23
Dependent Claim
35 words
The apparatus of claim 15 in which said can end rotating means is operable to rotate said end about a horizontal axis at said spray station while said materials are ejected onto said rotating end.
References Cited (Backward Citations)
US1013858A
Cited
US2189783A
Cited
US2313750A
Cited
US2329114A
Cited
US2412138A
Cited
US3015302A
Cited
US3008187A
Cited
US3015303A
Cited
US3322095A
Cited
US3164486A
Cited
US3584571A
Cited
US3576659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |