Patent US3707716A successfully refreshed from Google Patents.
US3707716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-tone push button controlled electronic horn
Assignee: Individual
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Filing: 1970-09-23
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Granted: 1972-12-26
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Expires: 1990-09-23
Abstract
Abstract Transistorized electronic circuitry for producing audiofrequency output signals is manually switched to vary circuit constants and effect controlled multi-tone outputs in desired automatic dequence. Battery voltage variations are avoided and tone control is simplified by way of special capacitor connections.
Inventors
- 👤 Norman S Goralnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:43
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
Electronic tone-producing apparatus comprising an audiofrequency oscillator having a plurality of frequency-controlling elements arranged for connection into said oscillator to occasion different frequencies of oscillations thereby, multi-contact mechanical switch means including manually-operated movable electrical contact means and stationary electrical contacts disposed for connection with said movable contact means in sequence as the latter moves along a path of travel, and means for connecting different ones of said frequency-connecting elements into said oscillator through said movable contact means and different ones of said stationary contacts, said switch including spring means urging said movable contact means to a position out of connection with said stationary contacts, whereby upon manual actuation of said movable contact means against action of said spring means said stationary contacts are first connected in a predetErmined sequence and then in reverse sequence when said manual actuation stops, to cause a predetermined sequence of tones to be generated by said oscillator.
Claim 2
Dependent Claim
152 words
Electronic tone-producing apparatus comprising an audiofrequency oscillator having a plurality of frequency-controlling elements arranged for connection into said oscillator to occasion different frequencies of oscillations thereby, multi-contact mechanical switch means including manually-operated movable electrical contact means and stationary electrical contacts disposed for connection with said movable contact means in sequence as the latter moves along a path of travel, and means for connecting different ones of said frequency-connecting elements into said oscillator through said movable contact means and different ones of said stationary contacts, said switch including spring means urging said movable contact means to a position out of connection with said stationary contacts, whereby upon manual actuation of said movable contact means against action of said spring means said stationary contacts are first connected in a predetErmined sequence and then in reverse sequence when said manual actuation stops, to cause a predetermined sequence of tones to be generated by said oscillator.
Claim 3
Dependent Claim
65 words
Electronic tone-producing apparatus as set forth in claim 1 wherein said switch further comprises cooperating relatively movable piston and cylinder members, said members having a substantially air-tight relation with one another and forming an air chamber therebetween, and relatively small air-bleed passage means between said chamber and the external atmosphere, said movable contact means being movable with and damped in movement by said piston member.
Claim 4
Dependent Claim
64 words
Electronic tone-producing apparatus as set forth in claim 2 wherein said piston and cylinder members are of electrically-insulating material, wherein said spring means and said movable contact means are disposed within said chamber, and wherein said stationary contacts form parts of the inner walls of said cylinder member and are disposed for sequential connection by said movable contact in response to manual actuation thereof.
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |