US4575284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distribution tube for pneumatic applicator
Assignee: FLEXI-COIL Ltd 1000 - 71ST STREET EAST SASKATOON SASKATCHEWAN CANADA S7K 3S5
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Filing: 1981-09-23
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Granted: 1986-03-11
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Expires: 2001-09-23
Abstract
Abstract A section of tube with a series of inwardly directed projections is placed in the main conduit of a pneumatic applicator, upstream of the primary distribution head. The inner projections in the tube serve to center the direction of the blown granular material into the primary distributor head. The projections are arranged in annular rows with the projections of each row being offset from those of an adjacent row.
Inventors
- 👤 Daniel W. Kelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:22
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/08; A01C7/081; A01C7/082; A01C15/00; A01C15/04; A01C7/084; B; B65; B65G; B65G53/00; B65G53/34; B65G53/52
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
72 words
In a pneumatic applicator having a conduit for delivering pneumatically carried granular material to a distributing header, the improvement comprising a section of said conduit having an interior with a plurality of inwardly directed projections, said projections being grouped in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said inwardly directed projections centering said granular material being conveyed by said conduit.
Claim 2
Dependent Claim
72 words
In a pneumatic applicator having a conduit for delivering pneumatically carried granular material to a distributing header, the improvement comprising a section of said conduit having an interior with a plurality of inwardly directed projections, said projections being grouped in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said inwardly directed projections centering said granular material being conveyed by said conduit.
Claim 3
Dependent Claim
14 words
The pneumatic applicator according to claim 1 wherein the section is frusto-conical in configuration.
Claim 4
Dependent Claim
18 words
The pneumatic applicator according to claim 1 wherein one annular row is offset 30° from an adjacent row.
Claim 5
Dependent Claim
90 words
A pneumatic applicator comprising a primary dividing head in communication with a plurality of secondary headers; means for producing a pneumatic stream carrying granular material; a primary conduit for conveying said pneumatic stream to the primary dividing head; said primary conduit including at least one section having an interior with a plurality of inwardly directed, bulbous projections arranged in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said projections centering the granular material being conveyed by said primary conduit.
Claim 6
Dependent Claim
90 words
A pneumatic applicator comprising a primary dividing head in communication with a plurality of secondary headers; means for producing a pneumatic stream carrying granular material; a primary conduit for conveying said pneumatic stream to the primary dividing head; said primary conduit including at least one section having an interior with a plurality of inwardly directed, bulbous projections arranged in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said projections centering the granular material being conveyed by said primary conduit.
Claim 7
Dependent Claim
17 words
The pneumatic applicator according to claim 1 wherein the section is straight with a tapered end portion.
Claim 8
Dependent Claim
24 words
The pneumatic applicator according to claim 4 wherein said section is in a straight piece of conduit spaced upstream from said primary dividing head.
Claim 9
Dependent Claim
20 words
The pneumatic applicator according to claim 4 wherein said conduit is tapered between said section and the primary dividing head.
Claim 10
Dependent Claim
75 words
A pneumatic applicator comprising: a dividing header; and a pneumatic conduit for delivering a pneumatic flow carrying granular material to said dividing header, said pneumatic conduit including at least one section having an interior with a plurality of inwardly directed projections arranged in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said inwardly directed projections centering said granular material being conveyed by said conduit.
Claim 11
Dependent Claim
75 words
A pneumatic applicator comprising: a dividing header; and a pneumatic conduit for delivering a pneumatic flow carrying granular material to said dividing header, said pneumatic conduit including at least one section having an interior with a plurality of inwardly directed projections arranged in annular rows with the projections of one row being offset with respect to the projections of an adjacent row, said inwardly directed projections centering said granular material being conveyed by said conduit.
Claim 12
Dependent Claim
24 words
The pneumatic applicator according to claim 9 wherein the projections of one annular row at least partially overlaps the projections of an adjacent row.
Claim 13
Dependent Claim
24 words
The pneumatic applicator according to claim 1 wherein the projections of one annular row at least partially overlaps the projections of an adjacent row.
Claim 14
Dependent Claim
26 words
The pneumatic applicator according to claim 4 wherein the bulbous projections of one annular row at least partially overlaps the bulbous projections of an adjacent row.
Claim 15
Dependent Claim
12 words
The pneumatic applicator according to claim 1, wherein said projections are bulbous.
Claim 16
Dependent Claim
14 words
The pneumatic applicator according to claim 8, wherein the section is frusto-conical in configuration.
Claim 17
Dependent Claim
18 words
The pneumatic applicator according to claim 8 wherein one annular row is offset 30° from an adjacent row.
Claim 18
Dependent Claim
17 words
The pneumatic applicator according to claim 8 wherein the section is straight with a tapered end portion.
Claim 19
Dependent Claim
23 words
The pneumatic applicator according to claim 8 wherein the section is in a straight piece of conduit spaced upstream from said dividing header.
Claim 20
Dependent Claim
19 words
The pneumatic applicator according to claim 8 wherein the conduit is tapered between the section and the dividing header.
Claim 21
Dependent Claim
19 words
The pneumatic applicator according to claim 8 wherein the conduit is tapered between the section and the dividing header.
Claim 22
Dependent Claim
12 words
The pneumatic applicator according to claim 8 wherein the projections are bulbous.
Claim 23
Dependent Claim
17 words
The pneumatic applicator according to claim 1 wherein the section is in a straight piece of conduit.
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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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |