US3688052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio frequency receiver
Assignee: Individual
•
Filing: 1970-05-04
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Granted: 1972-08-29
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Expires: 1990-05-04
Abstract
Abstract A magnetically operable audio frequency receiver which is adapted to be carried by a person, adjacent an ear of the person. The receiver is disposed within a limited area which is encompassed by a transmission loop. The receiver includes a pickup coil. Transmission of energy occurs by audio frequency inductive forces from the transmission loop to the pickup coil of the receiver. The receiver or a portion thereof is rotatably supported so that the axis of the pickup coil can be adjusted with respect to the transmission loop for control of the volume output of the receiver. The receiver has an energy cell or battery support member which not only supports the battery but also serves as a switch.
Inventors
- 👤 Aaron C Self
- 👤 James J Larkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:02
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/50; H04R25/502; H01; H01H; H01H2300/00; H01H2300/004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
A receiver apparatus adapted to be disposed within a loop which has an audio frequency signal applied thereto, the loop being substantially within a given plane, comprising a receiver coil adapted to have current magnetically induced therein by the signal applied to the loop, an amplifier and speaker, means connecting the receiver coil to the amplifier and speaker and means for rotating the receiver coil with respect to the plane of the loop so that the volume of the output of the amplifier and speaker is changed, wherein said receiver includes an energy cell, support means supporting the energy cell, contact means, means electrically connecting The support means and the contact means to the amplifier, the support means having a moveable portion for moving the energy cell into engagement with the contact member to energize the amplifier and for moving the energy cell out of engagement with the contact member for deenergizing the amplifier.
Claim 2
Dependent Claim
154 words
A receiver apparatus adapted to be disposed within a loop which has an audio frequency signal applied thereto, the loop being substantially within a given plane, comprising a receiver coil adapted to have current magnetically induced therein by the signal applied to the loop, an amplifier and speaker, means connecting the receiver coil to the amplifier and speaker and means for rotating the receiver coil with respect to the plane of the loop so that the volume of the output of the amplifier and speaker is changed, wherein said receiver includes an energy cell, support means supporting the energy cell, contact means, means electrically connecting The support means and the contact means to the amplifier, the support means having a moveable portion for moving the energy cell into engagement with the contact member to energize the amplifier and for moving the energy cell out of engagement with the contact member for deenergizing the amplifier.
Claim 3
Dependent Claim
28 words
The receiver apparatus of claim 1 in which the support means includes a fixed element and a movable element, the energy cell being supported by the movable element.
Claim 4
Dependent Claim
35 words
The receiver apparatus of claim 2 in which the movable element and the fixed element are threadedly joined one to the other, with the movable element being threadedly movable with respect to the fixed element.
Claim 5
Dependent Claim
39 words
The receiver apparatus of claim 1 which includes support structure and a housing rotatably carried by the support structure, the receiver coil and the amplifier and the speaker and the energy cell being within the housing and movable therewith.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |