Patent US4219018A successfully refreshed from Google Patents.
US4219018A
Expired / Lapsed
US
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Earplug unit with inserter and tie
Assignee: North Safety Products LLC
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Filing: 1979-03-29
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Granted: 1980-08-26
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Expires: 1999-03-29
Abstract
Abstract Earplug unit with inserter and tie adapted to be worn as a unit which can be folded and compacted into a relatively small carrying case, comprises one or a pair of earplugs (10) (30) each having an outer end attached to one or both ends of a tie member (22) (32) on which is slideably carried and retained an earplug inserter moveable from a carrying position into engagement with the outer end of an earplug for its insertion into the auditory canal (c) of an ear (E).
Inventors
- 👤 Weston E. Draper, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:45
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/08; A61F11/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
An earplug unit comprising: at least one earplug adapted to be inserted into an auditory canal of an ear; a tie member having at least one of its opposite ends attached to an outer end of an earplug; insertion means carried by, retained on and movable along the tie member for engaging and inserting the earplug into the auditory canal; and means, attached to an opposite end of the tie member, for retaining the insertion means on the tie member.
Claim 2
Dependent Claim
80 words
An earplug unit comprising: at least one earplug adapted to be inserted into an auditory canal of an ear; a tie member having at least one of its opposite ends attached to an outer end of an earplug; insertion means carried by, retained on and movable along the tie member for engaging and inserting the earplug into the auditory canal; and means, attached to an opposite end of the tie member, for retaining the insertion means on the tie member.
Claim 3
Dependent Claim
46 words
An earplug unit according to claim 1 wherein the means for retaining the insertion means on the tie member comprises an earplug whereby the tie member is attached to and extends between a pair of earplugs retaining the insertion means between them on the tie member.
Claim 4
Dependent Claim
21 words
An earplug unit according to claim 1 wherein the tie member comprises: a flexible foldable cord passing through the insertion means.
Claim 5
Dependent Claim
37 words
An earplug unit according to claim 1 wherein the insertion means comprises: a tubular member through which the tie member passes having at least one end surface for engaging and inserting an earplug into the auditory canal.
Claim 6
Dependent Claim
27 words
An earplug unit according to claim 1 wherein the means for retaining the insertion means comprises: a knot tied at the opposite end of the tie member.
Claim 7
Dependent Claim
51 words
An earplug unit according to claim 1 wherein each earplug comprises: a sealing portion insertable into the auditory canal and situated adjacent an inner end of the earplug and a stem portion adjoining and extending from the sealing portion to an outer end of the earplug attached to the tie member.
Claim 8
Dependent Claim
70 words
An earplug unit according to claim 6 wherein the sealing portion comprises: a plurality of axially spaced flexible resilient sealing flanges including an inner flange of relatively small diameter adjacent the inner end of the earplug and an exterior flange of relatively larger diameter adjoining the stem portion over which the insertion means is slipped into engagement with the exterior flange for inserting the sealing portion into the auditory canal.
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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) | 1983-08-26 | 1984-02-25 | 1984-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-26 | 1988-02-25 | 1988-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-26 | 1992-02-25 | 1992-08-26 | $7700.00 | Window Closed / Lapsed |