Patent US4552137A successfully refreshed from Google Patents.
US4552137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earplugs
Assignee: Individual
•
Filing: 1983-08-16
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Granted: 1985-11-12
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Expires: 2003-08-16
Abstract
Abstract An earplug in the form of a preformed self-supporting body of malleable plastic material which is deformable under slight pressure, the body having a front face and a rear face, the front face having a generally convex surface adapted to conform to and cover the opening of the ear canal and the body having a size such that it is adapted to reside within the external ear when the generally convex surface is positioned over the opening of the ear canal, and a layer of pressure-sensitive adhesive so located on the convex surface as to releasably adhere the surface to the periphery of the ear canal opening.
Inventors
- 👤 Richard H. Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:08
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
An earplug comprised of a preformed self-supporting body of resilient elastomeric material selected from the group consisting of foamed and unfoamed rubber and foamed and unfoamed synthetic plastics material, said body having a front face and a rear face, said front face having a generally convex forward surface adapted to conform to and cover the opening of the ear canal and a rearward surface and said body having a size such that it is adapted to reside within the external ear when said generally convex surface is positioned over the opening of the ear canal, and a layer of pressure sensitive adhesive on said generally convex surface for releasably adhering the body to the periphery of the ear canal opening.
Claim 2
Dependent Claim
120 words
An earplug comprised of a preformed self-supporting body of resilient elastomeric material selected from the group consisting of foamed and unfoamed rubber and foamed and unfoamed synthetic plastics material, said body having a front face and a rear face, said front face having a generally convex forward surface adapted to conform to and cover the opening of the ear canal and a rearward surface and said body having a size such that it is adapted to reside within the external ear when said generally convex surface is positioned over the opening of the ear canal, and a layer of pressure sensitive adhesive on said generally convex surface for releasably adhering the body to the periphery of the ear canal opening.
Claim 3
Dependent Claim
29 words
An earplug as in claim 1 wherein said rearward surface of said front face of said body is conical or frusto-conically shaped and continuous with said generally convex surface.
Claim 4
Dependent Claim
14 words
An earplug as in claim 1 wherein said generally convex surface is generally spherical.
Claim 5
Dependent Claim
17 words
An earplug as in claim 1 wherein the adhesive layer is in the form of a ring.
Claim 6
Dependent Claim
27 words
An earplug as in claim 1 wherein said rearward surface of said front face of said body is frusto-conically shaped and continuous with said generally convex surface.
Claim 7
Dependent Claim
106 words
An earplug comprised of a preformed self-supporting body of malleable plastic material which is deformable under slight pressure, said body having a front face and a rear face, said front face exhibiting a generally convex surface adapted to conform to and cover the opening of the ear canal and said body having a size such that it is adapted to reside within the external ear when said generally convex surface is positioned over the opening of the ear canal, and a layer of pressure-sensitive adhesive so located on said generally convex surface as to releasably adhere said surface to the periphery of the ear canal opening.
Claim 8
Dependent Claim
106 words
An earplug comprised of a preformed self-supporting body of malleable plastic material which is deformable under slight pressure, said body having a front face and a rear face, said front face exhibiting a generally convex surface adapted to conform to and cover the opening of the ear canal and said body having a size such that it is adapted to reside within the external ear when said generally convex surface is positioned over the opening of the ear canal, and a layer of pressure-sensitive adhesive so located on said generally convex surface as to releasably adhere said surface to the periphery of the ear canal opening.
References Cited (Backward Citations)
US968008A
Cited
US2574288A
Cited
US2716625A
Cited
US3487832A
Cited
US3771521A
Cited
US3881570A
Cited
US4344425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |