Patent US4993074A successfully refreshed from Google Patents.
US4993074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earphone spacer
Assignee: Individual
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Filing: 1989-01-11
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Granted: 1991-02-12
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Expires: 2009-01-11
Abstract
Abstract A spacing device which holds earphones away from the ears to create a sense of live music when the earphones are used in conjunction with loudspeakers. The spacers allow sound from loudspeakers set away from the user to reach the ear from all directions. When the spacer is worn to hold earphones a distance from the ear while listening to recorded music played through both earphones and loudspeakers from the same source the user experiences an increase in ambience or sense of concert-hall realism.
Inventors
- 👤 Robert J. Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:00
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/033; H04R1/00; H04R1/10; H04R1/1008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
An adjustable earphone spacer for holding an earphone a selected distance from the ear comprising in combination: a. A cylindrical base for contacting the head having a plurality of ports to allow the unimpeded transmission of external sound to the ear; and b. A cylindrical earphone support coaxially threadably engageable with said base to vary the distance between the earphone and the ear, said support having a plurality of ports to allow the unimpeded transmission of external sound to the ear.
Claim 2
Dependent Claim
81 words
An adjustable earphone spacer for holding an earphone a selected distance from the ear comprising in combination: a. A cylindrical base for contacting the head having a plurality of ports to allow the unimpeded transmission of external sound to the ear; and b. A cylindrical earphone support coaxially threadably engageable with said base to vary the distance between the earphone and the ear, said support having a plurality of ports to allow the unimpeded transmission of external sound to the ear.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1 further including a screen disposed across the outer end of said support.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2 further including means for limiting the extent of coaxial travel between said base and said support.
Claim 5
Dependent Claim
108 words
An earphone spacer for holding an earphone a selected distance from the ear comprising in combination: a. a cylindrical base for contacting the head having a port to admit sound to the ear; b. headband means for holding said base in contact with the ear; c. a cylindrical earphone support having a port to allow unimpeded transmission of sound generated by said earphone to the ear; and d. cylindrical spacing means for spacing said support from said base, said spacing means having a plurality of ports covering a substantial area of the surface of said spacing means arranged to allow unimpeded transmission of ambient sound to the ear.
Claim 6
Dependent Claim
108 words
An earphone spacer for holding an earphone a selected distance from the ear comprising in combination: a. a cylindrical base for contacting the head having a port to admit sound to the ear; b. headband means for holding said base in contact with the ear; c. a cylindrical earphone support having a port to allow unimpeded transmission of sound generated by said earphone to the ear; and d. cylindrical spacing means for spacing said support from said base, said spacing means having a plurality of ports covering a substantial area of the surface of said spacing means arranged to allow unimpeded transmission of ambient sound to the ear.
Claim 7
Dependent Claim
33 words
The apparatus of claim 4 wherein said spacing means comprises a plurality of said cylinders and further includes detachable holding means for securing said cylinders to said base, said support, and one another.
Claim 8
Dependent Claim
18 words
The apparatus of claim 4 further including a screen disposed across the outer end of said earphone support.
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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) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |