Patent US1517553A successfully refreshed from Google Patents.
US4233025A
Expired / Lapsed
US
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Hollow cotton roll
Assignee: Individual
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Filing: 1979-03-08
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Granted: 1980-11-11
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Expires: 1999-03-08
Abstract
Abstract An elongate, generally cylindrical, hollow cotton roll for use with metal or plastic aspirators or suction tubes for keeping an area dry in medicine and dentistry. The roll has an inner layer of an open mesh fabric which receives the end of the aspirator, a layer of cotton or synthetic roving surrounding the fabric layer, and a layer of braided yarn surrounding the roving to retain same. Also disclosed is a machine for manufacturing such a cotton roll in a continuous length.
Inventors
- 👤 William A. Larson
- 👤 Dale P. Wilterink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2022; A61F13/2042; A61C; A61C17/00; A61C17/06; A61C17/08; A61F13/2071
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
57 words
An elongate, generally cylindrical, hollow absorbent roll for use with an aspirator comprising: a layer of an open mesh fabric defining an inner wall of said roll, said aspirator being insertable within said fabric; a layer of an absorbent material surrounding said fabric layer; and a layer of braided yarn surrounding said absorbent material to retain same.
Claim 2
Dependent Claim
57 words
An elongate, generally cylindrical, hollow absorbent roll for use with an aspirator comprising: a layer of an open mesh fabric defining an inner wall of said roll, said aspirator being insertable within said fabric; a layer of an absorbent material surrounding said fabric layer; and a layer of braided yarn surrounding said absorbent material to retain same.
Claim 3
Dependent Claim
14 words
An absorbent roll according to claim 1, wherein said open mesh fabric is gauze.
Claim 4
Dependent Claim
14 words
An absorbent roll according to claim 2, wherein said gauze is stiffened with starch.
Claim 5
Dependent Claim
18 words
An absorbent roll according to claim 1, wherein said inner wall is of cotton or a synthetic fabric.
Claim 6
Dependent Claim
20 words
An absorbent roll according to claim 1, 2, 3, or 4, wherein said absorbent material is cotton or synthetic roving.
Claim 7
Dependent Claim
18 words
An absorbent roll according to claim 5, wherein said braided yarn is of cotton or a synthetic material.
Claim 8
Dependent Claim
21 words
An absorbent roll according to claim 1, 2, 3, or 4, wherein said yarn is of cotton or a synthetic material.
Claim 9
Dependent Claim
18 words
An absorbent roll according to claim 1, wherein said absorbent roll is sized with a non-toxic, water-resistant starch.
Claim 10
Independent Claim
65 words
A method of making an elongate, generally cylindrical, hollow absorbent roll for use with an aspirator comprising the steps of: providing a continuous strip of an open mesh fabric; forming said open mesh fabric strip into a generally cylindrical shape; surrounding said open mesh fabric strip with a continuous length of absorbent material; and continuously forming a layer of braided yarn around said absorbent strip.
Claim 11
Independent Claim
65 words
A method of making an elongate, generally cylindrical, hollow absorbent roll for use with an aspirator comprising the steps of: providing a continuous strip of an open mesh fabric; forming said open mesh fabric strip into a generally cylindrical shape; surrounding said open mesh fabric strip with a continuous length of absorbent material; and continuously forming a layer of braided yarn around said absorbent strip.
Claim 12
Dependent Claim
13 words
A method according to claim 9, wherein said open mesh fabric is gauze.
Claim 13
Dependent Claim
13 words
A method according to claim 10, wherein said gauze is stiffened with starch.
Claim 14
Dependent Claim
18 words
A method according to claim 9, wherein said open mesh fabric is of cotton or a synthetic material.
Claim 15
Dependent Claim
19 words
A method according to claim 9, 10, 11, or 12, wherein said absorbent material is cotton or synthetic roving.
Claim 16
Dependent Claim
17 words
A method according to claim 13, wherein said braided yarn is of cotton or a synthetic material.
Claim 17
Dependent Claim
20 words
A method according to claim 9, 10, 11, or 12, wherein said yarn is of cotton or a synthetic material.
Claim 18
Dependent Claim
19 words
A method according to claim 9, further comprising the step of: sizing said roll with a non-toxic, water-resistant starch.
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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) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |