Patent US3925814A successfully refreshed from Google Patents.
US3925814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound card and sound apparatus suitable for multi-channel use
Assignee: Individual
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Filing: 1973-08-23
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Granted: 1975-12-09
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Expires: 1993-08-23
Abstract
Abstract This invention relates to audio apparatus in which a card with a magnetic sound track, or other type sound track, extending parallel to an edge of the card and simple manual operated means produce relative movement of the card and a sound head. One embodiment uses a power drive to obtain a more uniform rate of relative movement. Extra length of reproduction is provided on the card by having multi-channel tracks with reverse runs and switch means for maintaining the sound head operative on different selected channels at various times during the operation of the apparatus. Reversible motors permit successive sound tracks to be used with the cards moving in opposite directions.
Inventors
- 👤 Maurice E Chernowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:50
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04; G06; G06K; G06K7/00; G06K7/08; G06K7/089; G11B5/00; G11B5/127; G11B5/29
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
316 words
Audio apparatus having a card with a substantially straight longitudinal edge along one side thereof, a sound track on the card extending parallel to said edge and including a plurality of sub-channels thereon, a frame having a portion that is shaped to fit the grip of one hand of an operator holding it during use, a channel shaped guideway at one end of the frame facing away from the portion that is gripped in one hand, said channel shaped guideway having top and bottom guide surfaces having portions that extend to the end of the frame remote from the grip portion and that covers the portion of the card inward from said longitudinal edge, including the sound track, and with a midsurface of the guideway between the top and bottom guide surfaces thereof in angular relation to the top and bottom guide surfaces and with which said longitudinal edge of the card contacts to guide the card during relative movement of the card and frame lengthwise of the sound track, the guideway being substantially shorter than the card in the direction of relative movement of the card and guideway, a sound head carried by the frame with a portion that projects through the top guide surface of the guideway into working relation with the sound track when the edge of the card is against the mid-surface of the channel, the card being substantially greater in width than the part that extends into the guideway whereby most of the card is visible beyond the guideway and there is a wide card area beyond the end of the guideway that can be gripped by the other hand of an operator who is holding the grip portion with his first hand, the sound head having different contacts that operate along the different subchannels of the sound track, and switch means operable into different positions to make different contacts effective.
Claim 2
Dependent Claim
316 words
Audio apparatus having a card with a substantially straight longitudinal edge along one side thereof, a sound track on the card extending parallel to said edge and including a plurality of sub-channels thereon, a frame having a portion that is shaped to fit the grip of one hand of an operator holding it during use, a channel shaped guideway at one end of the frame facing away from the portion that is gripped in one hand, said channel shaped guideway having top and bottom guide surfaces having portions that extend to the end of the frame remote from the grip portion and that covers the portion of the card inward from said longitudinal edge, including the sound track, and with a midsurface of the guideway between the top and bottom guide surfaces thereof in angular relation to the top and bottom guide surfaces and with which said longitudinal edge of the card contacts to guide the card during relative movement of the card and frame lengthwise of the sound track, the guideway being substantially shorter than the card in the direction of relative movement of the card and guideway, a sound head carried by the frame with a portion that projects through the top guide surface of the guideway into working relation with the sound track when the edge of the card is against the mid-surface of the channel, the card being substantially greater in width than the part that extends into the guideway whereby most of the card is visible beyond the guideway and there is a wide card area beyond the end of the guideway that can be gripped by the other hand of an operator who is holding the grip portion with his first hand, the sound head having different contacts that operate along the different subchannels of the sound track, and switch means operable into different positions to make different contacts effective.
Claim 3
Dependent Claim
74 words
The audio apparatus described in claim 1 characterized by a motor and rollers carried by the frame said rollers being driven by the motor at a speed that advances the card at the speed for which the sound track is recorded, said rollers being in position to grip the card between them and to move it through the channel at said speed after the card has been advanced into the channel by hand manipulation.
Claim 4
Dependent Claim
180 words
The audio apparatus described in claim 2 characterized by said rollers comprising a pair of opposed rollers carried by the frame and located along the guideway in position to grip and advamce the card at said speed after the card has been moved into the grip of the rollers by hand manipulation of the card and frame, the rollers being located at a different distance from said longitudinal edge of the card than are the track and sound head, said rollers being at a location lengthwise of the guideway substantially the same as that of the sound head so that as the card is advanced along the guideway by hand manipulation, the rollers grip and continue the advance of the card from substantially the time that the card reaches the location at which the sound head operates on the track and at which speed of the card movement becomes significant in the operation of the apparatus, and said pair of rollers continuing the advance of the card until the trailing end of the card is substantially at the sound head.
Claim 5
Dependent Claim
36 words
The apparatus described in claim 3 characterized by switch means that reverse the direction of operation of the motor at the same motor speed to move the card through the guideway in either of opposite directions.
Claim 6
Dependent Claim
50 words
The apparatus described in claim 2 characterized by the switch means including circuitry that reverses the direction of operation of the motor for each operation of the switch means into a different position such that as successive channels are selected by the switch the card is driven in opposite directions.
Claim 7
Dependent Claim
44 words
The apparatus described in claim 1 characterized by the sound head being located above the sound channels on the card, and means on the other side of the card for maintaining said sound channels on the card in resilient contact with the sound head.
Claim 8
Dependent Claim
33 words
The apparatus described in claim 6 characterized by the means on the other side of the card being a spring portion of the guideway that urges the card upward against the sound head.
Claim 9
Dependent Claim
63 words
The apparatus described in claim 6 characterized by the means on the other side of the card being a recess below the part of the card with which the sound head has contact, the card spanning the recess and maintaining a resilient contact with the sound head by virtue of the yielding stiffness of the part of the card that spans the recess.
Claim 10
Dependent Claim
123 words
An audio apparatus as described in claim 1 characterized by said plurality of contacts of the sound bead simultaneously touching different parallel channels of the sound track, and switch means having electric circuits connecting with the different contacts of the sound head and movable into different positions to put individual contacts of the head selectively into the circuit with the audio means at successive times, and further characterized by a motor that operates at the same forward and reverse speed, and means driven by the motor for producing relative movement of the card and sound head, the switch being a double function switch including means for changing the direction of the motor drive when the switch is moved into said different positions selectively.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |