US3591885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noncontaminating swabs
Assignee: National Aeronautics and Space Administration
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Filing: 1968-12-16
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Granted: 1971-07-13
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Expires: 1988-12-16
Abstract
Abstract An absorbent swab is disclosed which consists of a wad of fibrous material on at least one end of the swab with an envelop or sock of woven porous fabric surrounding and entrapping the wad thereby preventing egress of absorbent material through the fabric. The woven sock is secured to the handle of the swab with a length of heat shrinkable synthetic polymeric material or the sock may be fused to the applicator stick by a heating process.
Inventors
- 👤 Martin Fritzen Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:58
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
An applicator swab comprising: an elongated sticklike handle, fibrous absorbent means on at least one of the ends of said handle, an envelop of porous fabric comprising an open base portion and a closed opposite end surrounding and entrapping said absorbent means, and, a short length of heat shrinkable synthetic polymeric material to affix said envelop at its base portion to said handle, whereby liquids may be absorbed by said absorbent means through the interstices of said fabric without egress of absorbent material through said fabric.
Claim 2
Dependent Claim
86 words
An applicator swab comprising: an elongated sticklike handle, fibrous absorbent means on at least one of the ends of said handle, an envelop of porous fabric comprising an open base portion and a closed opposite end surrounding and entrapping said absorbent means, and, a short length of heat shrinkable synthetic polymeric material to affix said envelop at its base portion to said handle, whereby liquids may be absorbed by said absorbent means through the interstices of said fabric without egress of absorbent material through said fabric.
Claim 3
Dependent Claim
30 words
The invention of claim 1 wherein said heat-shrinkable material covers the entire length of said handle from said base portion of said envelop to the opposite extremity of said handle.
Claim 4
Dependent Claim
90 words
An applicator swab comprising: an elongated synthetic polymeric sticklike handle; fibrous absorbent means on at least one of the ends of said handle; an envelop of porous, woven, synthetic fabric comprising an open base portion and a closed opposite end surrounding and entrapping said absorbent means, said synthetic fabric envelop being attached to said handle by the application of heat to fuze said envelop to said handle, whereby liquids may be absorbed by said absorbent means through the interstices of said fabric without egress of absorbent material through said fabric.
Claim 5
Dependent Claim
90 words
An applicator swab comprising: an elongated synthetic polymeric sticklike handle; fibrous absorbent means on at least one of the ends of said handle; an envelop of porous, woven, synthetic fabric comprising an open base portion and a closed opposite end surrounding and entrapping said absorbent means, said synthetic fabric envelop being attached to said handle by the application of heat to fuze said envelop to said handle, whereby liquids may be absorbed by said absorbent means through the interstices of said fabric without egress of absorbent material through said fabric.
References Cited (Backward Citations)
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US1822566A
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |