US3899998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary coating applying nozzles
Assignee: USM Corp
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Filing: 1974-10-03
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Granted: 1975-08-19
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Expires: 1994-10-03
Abstract
Abstract Apparatus is provided for applying a coating to portions of a workpiece and comprises a nozzle having outlet ports opening into a longitudinal bore in the nozzle, a tube slidably mounted in the bore and means for effecting relative movement between the nozzle and the tube to cover and uncover the outlet port so that coating material can pass therethrough. The nozzle is rotated adjacent a moving workpiece and the ports open into recessed portions formed in the outer end portion of the nozzle which form gaps between the workpiece and nozzle into which the coating is extruded.
Inventors
- 👤 John Davies
- 👤 Dennis E Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:08
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/18; A43D25/183; B; B05; B05C; B05C5/00; B05C5/02; B05C5/0208; B05C5/0212; B05C5/0216
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
Apparatus for applying a coating to surface portions of a workpiece comprising: a rotatable nozzle having an outlet port opening into a longitudinal bore in the nozzle; a tube slidably mounted in said bore; means for effecting relative movement between said nozzle and said tube lengthwise of said bore from a condition wherein said outlet port is uncovered such that coating material passes therethrough to a condition wherein said outlet port is closed by said tube to block it against the passage of coating material; means for feeding coating material to said nozzle; and means for rotating said nozzle about a longitudinal axis thereof during operation of said coating apparatus.
Claim 2
Dependent Claim
110 words
Apparatus for applying a coating to surface portions of a workpiece comprising: a rotatable nozzle having an outlet port opening into a longitudinal bore in the nozzle; a tube slidably mounted in said bore; means for effecting relative movement between said nozzle and said tube lengthwise of said bore from a condition wherein said outlet port is uncovered such that coating material passes therethrough to a condition wherein said outlet port is closed by said tube to block it against the passage of coating material; means for feeding coating material to said nozzle; and means for rotating said nozzle about a longitudinal axis thereof during operation of said coating apparatus.
Claim 3
Dependent Claim
64 words
Apparatus of claim 1 wherein coating material is supplied by said means for feeding coating material to said nozzle through the interior of said tube and from an open end of said tube into said nozzle, said nozzle having a seat portion adjacent an end thereof for receiving said open end of the tube to close off flow of coating material from said tube.
Claim 4
Dependent Claim
80 words
The apparatus of claim 1 wherein said nozzle comprises an outer surface having a recessed portion formed therein and said outlet port opening into said recess, said surface receding into said recessed portion to form a generally wedge-shaped gap for receiving the coating material through said outlet port, the rotational direction of said nozzle being such that the widest part of said gap leads and the narrowest part follows to build up pressure of the applied coating against a workpiece.
Claim 5
Dependent Claim
64 words
The apparatus of claim 1 wherein said outlet port is one of a plurality of outlet ports spaced along the length of said nozzle and wherein said means for effecting relative movement between said nozzle and said tube is controllable to uncover a predetermined number of said ports to vary the volume and location of coating being applied to a workpiece by the apparatus.
Claim 6
Dependent Claim
33 words
The apparatus of claim 4 wherein said plurality of outlet ports are arranged linearly in a row and which further include a plurality of such rows spaced about the circumference of said nozzle.
Claim 7
Dependent Claim
97 words
The apparatus of claim 5 wherein said nozzle comprises an outer surface having a respective recessed portion formed therein for each of said rows of outlet ports with said outlet ports opening into a respective recess, said surface receding into each of said recessed portions to form a generally wedge-shaped gap for receiving the coating material through a respective row of outlet ports, the rotational direction of said nozzle being such that the widest part of each of said gaps leads and the narrowest part follows to build up pressure of the applied coating against a workpiece.
Claim 8
Dependent Claim
20 words
The apparatus of claim 6 which further includes means for supporting a workpiece adjacent said outer surface of said nozzle.
Claim 9
Dependent Claim
39 words
The apparatus of claim 7 which further includes means for providing relative movement between said nozzle and said workpiece in a direction opposed to the relative movement between said nozzle and said workpiece caused by rotation of said nozzle.
Claim 10
Dependent Claim
65 words
The apparatus of claim 8 wherein coating material is supplied by said means for feeding coating material to said nozzle through the interior of said tube and from an open end of said tube into said nozzle, said nozzle having a seat portion adjacent an end thereof for receiving said open end of the tube to close off flow of coating material from said tube.
Claim 11
Dependent Claim
102 words
A nozzle for use in apparatus for applying a coating to surface portions of a workpiece operated on by the apparatus, comprising: an outer surface having a recessed portion formed therein and an outlet port opening into said recess, said surface receding into said recessed portion to form a generally wedge-shaped gap for receiving the coating material through said outlet port such that rotation of said nozzle about a longitudinal axis thereof with the widest part of said gap leading and the narrowest part oF said gap following is effective to build up pressure of the applied coating against an adjacent workpiece.
Claim 12
Dependent Claim
102 words
A nozzle for use in apparatus for applying a coating to surface portions of a workpiece operated on by the apparatus, comprising: an outer surface having a recessed portion formed therein and an outlet port opening into said recess, said surface receding into said recessed portion to form a generally wedge-shaped gap for receiving the coating material through said outlet port such that rotation of said nozzle about a longitudinal axis thereof with the widest part of said gap leading and the narrowest part oF said gap following is effective to build up pressure of the applied coating against an adjacent workpiece.
Claim 13
Dependent Claim
34 words
A nozzle as set forth in claim 10 wherein said outer surface comprises a plurality of said recessed portions formed about its periphery and a respective outlet port for each of said recessed portions.
Claim 14
Dependent Claim
36 words
A nozzle as set forth in claim 11 wherein the outlet port of each of said recessed portions is one of a plurality of outlet ports arranged lengthwise of said nozzle in said respective wedge-shaped gap.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |