US3896801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ear plug
Assignee: Individual
•
Filing: 1973-05-29
•
Granted: 1975-07-29
•
Expires: 1993-05-29
Abstract
Abstract A sound restricting ear plug consisting of a flat disk of a resilient material such as polyethylene. To one side of the disk is secured a thin walled hollow member, such walls being substantially thinner than the flat disk so that such walls have substantially no resilience. The walls of the hollow member are provided with deep folds or pleats to give it enough rigidity so that it may readily be inserted into the auditory canal of a human ear and hold the bottom side of the disk in contact with the external surface of the ear surrounding the entrance to the auditory canal. A knob is provided on the other side of the disk for being grasped by the fingers of the user.
Inventors
- 👤 Kenneth M Grout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:10
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
An ear plug comprising: a. a flat, imperforate, flexible plate adapted to provide an imperforate sound barrier, having a bottom surface adapted to contact the external surfaces surrounding the entrance to the auditory canal of the human ear, the flexibility of said plate to follow the contours of said surfaces when brought into contact therewith; b. an elongated thin walled hollow flexible tubular member having one end secured to said bottom surface, the walls of said flexible member being substantially thinner than the thickness of said plate and having substantially no resiliency, the other end of said flexible member being closed; c. said thin walled member being adapted to be inserted into said auditory canal to retain said bottom surface of said plate in contact with said external surfaces; d. said bottom surface extending beyond the walls of said thin walled member around the entire periphery of said thin walled member, thus providing a portion of said bottom surface for contacting said external surfaces along the entire periphery of the entrance to said auditory canal; e. the walls of said hollow member being provided with a plurality of folds extending longitudinally along the length of said hollow member from said one end to said other end.
Claim 2
Dependent Claim
206 words
An ear plug comprising: a. a flat, imperforate, flexible plate adapted to provide an imperforate sound barrier, having a bottom surface adapted to contact the external surfaces surrounding the entrance to the auditory canal of the human ear, the flexibility of said plate to follow the contours of said surfaces when brought into contact therewith; b. an elongated thin walled hollow flexible tubular member having one end secured to said bottom surface, the walls of said flexible member being substantially thinner than the thickness of said plate and having substantially no resiliency, the other end of said flexible member being closed; c. said thin walled member being adapted to be inserted into said auditory canal to retain said bottom surface of said plate in contact with said external surfaces; d. said bottom surface extending beyond the walls of said thin walled member around the entire periphery of said thin walled member, thus providing a portion of said bottom surface for contacting said external surfaces along the entire periphery of the entrance to said auditory canal; e. the walls of said hollow member being provided with a plurality of folds extending longitudinally along the length of said hollow member from said one end to said other end.
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |