US3590133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable amplitude vibrato and glissando circuitry for electronic musical instruments
Assignee: Wurlitzer Co
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Filing: 1968-11-15
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Granted: 1971-06-29
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Expires: 1988-11-15
Abstract
Abstract A vibrato oscillator on the order of 6 cycles per second frequency is supplied in an electronic organ. A diode shunts the output of the vibrato oscillator, and when the diode is conductive, no vibrato oscillations are provided to the organ oscillators and no vibrato appears in the organ output. A manually operable switch is provided which causes a capacitor to charge through the diode, gradually biasing the diode off and applying the vibrato signal at a controlled rate to the organ oscillators to produce an increasing vibrator in the organ output. Glissando circuitry is also provided but the vibrato and glissando cannot coexist.
Inventors
- 👤 Harold O Schwartz
- 👤 Roger J Mcnerney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:42
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; G10H2210/00; G10H2210/155; G10H2210/195; G10H2210/201; G10H2210/211; G10H2210/221
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A pulsato circuit for an electronic musical instrument having a plurality of keys and key switches comprising a pulsato oscillator for producing pulsato oscillations, said oscillator having an output, a capacitor in series with said output, a shunting diode connected to said series capacitor, means connecting said series capacitor to produce pulsato in the output of said electronic musical instrument, means including a switch selectively manually operable to cause said diode to conduct and to shunt the pulsato signal, subsequent reverse operation of said switch effecting charging of said capacitor through said diode progressively to cut off said diode and to produce progressively increasing pulsato in the output of said musical instrument.
Claim 2
Dependent Claim
112 words
A pulsato circuit for an electronic musical instrument having a plurality of keys and key switches comprising a pulsato oscillator for producing pulsato oscillations, said oscillator having an output, a capacitor in series with said output, a shunting diode connected to said series capacitor, means connecting said series capacitor to produce pulsato in the output of said electronic musical instrument, means including a switch selectively manually operable to cause said diode to conduct and to shunt the pulsato signal, subsequent reverse operation of said switch effecting charging of said capacitor through said diode progressively to cut off said diode and to produce progressively increasing pulsato in the output of said musical instrument.
Claim 3
Dependent Claim
49 words
A pulsato circuit as set forth in claim 1 and further including means for producing a glissando effect in said electronic musical instrument, said glissando producing means including means including said switch, and means for rendering said glissando producing means ineffective to produce glissando during the production of pulsato.
Claim 4
Dependent Claim
135 words
A pulsato circuit for an electronic musical instrument comprising means for providing a pulsato signal, means connected to said pulsato signal providing means for utilizing said pulsato signal to produce a pulsato effect in said electronic musical instrument, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato means connected to said pulsato signal producing means and including said switch and a circuit having a predetermined time constant for subsequently rendering the pulsato signal ineffective to produce pulsato at a predetermined increasing rate, and means for producing a glissando effect in said electronic musical instrument, said glissando producing means including means including said switch, and means for rendering said glissando producing means ineffective to produce glissando during the production of pulsato.
Claim 5
Dependent Claim
135 words
A pulsato circuit for an electronic musical instrument comprising means for providing a pulsato signal, means connected to said pulsato signal providing means for utilizing said pulsato signal to produce a pulsato effect in said electronic musical instrument, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato means connected to said pulsato signal producing means and including said switch and a circuit having a predetermined time constant for subsequently rendering the pulsato signal ineffective to produce pulsato at a predetermined increasing rate, and means for producing a glissando effect in said electronic musical instrument, said glissando producing means including means including said switch, and means for rendering said glissando producing means ineffective to produce glissando during the production of pulsato.
Claim 6
Dependent Claim
122 words
An electronic musical instrument comprising means including a plurality of keys and key switches for producing musical tones, means for providing a pulsato signal, means connected to said pulsato signal to produce a pulsato effect in said musical tones, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato, and means connected to said pulsato signal producing means and including said switch and a circuit having a predetermined time constant for subsequeNtly rendering the pulsato signal effective to produce pulsato at a predetermined increasing rate, said switch being selectively operable independent of said keys and key switches whereby said musical tones may be produced independently of pulsato effect.
Claim 7
Dependent Claim
122 words
An electronic musical instrument comprising means including a plurality of keys and key switches for producing musical tones, means for providing a pulsato signal, means connected to said pulsato signal to produce a pulsato effect in said musical tones, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato, and means connected to said pulsato signal producing means and including said switch and a circuit having a predetermined time constant for subsequeNtly rendering the pulsato signal effective to produce pulsato at a predetermined increasing rate, said switch being selectively operable independent of said keys and key switches whereby said musical tones may be produced independently of pulsato effect.
Claim 8
Dependent Claim
16 words
An instrument as set forth in claim 4 wherein said switch comprises a foot operated switch.
Claim 9
Dependent Claim
44 words
An instrument as set forth in claim 4 wherein the means for rendering the pulsato signal ineffective comprises a diode connected to said pulsato signal producing means, said switch being connected to said diode to render the diode conductive to shunt the pulsato signal.
Claim 10
Dependent Claim
46 words
An instrument as set forth in claim 6 wherein the means for subsequently rendering the pulsato signal effective comprises a series capacitor connected to said pulsato signal producing means for carrying the pulsato signal and connected to said diode for charging to cut off said diode.
Claim 11
Dependent Claim
170 words
A pulsato circuit for an electronic musical instrument comprising means for providing a pulsato signal, means connected to said pulsato signal providing means for utilizing said pulsato signal to produce a pulsato effect in said electronic musical instrument, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato, said means for rendering the pulsato signal ineffective including a diode connected to said pulsato signal producing means, said switch being connected to said diode to render the diode conductive to shunt the pulsato signal, and means connected to said pulsato signal providing means and including said switch and a circuit having a predetermined time constant for subsequently rendering the pulsato signal effective to produce pulsato at a predetermined increasing rate, said means for subsequently rendering the pulsato signal ineffective comprising a series capacitor connected to said pulsato signal producing means for carrying the pulsato signal and connected to said diode for charging to cut off said diode.
Claim 12
Dependent Claim
170 words
A pulsato circuit for an electronic musical instrument comprising means for providing a pulsato signal, means connected to said pulsato signal providing means for utilizing said pulsato signal to produce a pulsato effect in said electronic musical instrument, means connected to said pulsato signal producing means and including a manually selectively operable switch for rendering the pulsato signal ineffective to produce pulsato, said means for rendering the pulsato signal ineffective including a diode connected to said pulsato signal producing means, said switch being connected to said diode to render the diode conductive to shunt the pulsato signal, and means connected to said pulsato signal providing means and including said switch and a circuit having a predetermined time constant for subsequently rendering the pulsato signal effective to produce pulsato at a predetermined increasing rate, said means for subsequently rendering the pulsato signal ineffective comprising a series capacitor connected to said pulsato signal producing means for carrying the pulsato signal and connected to said diode for charging to cut off said diode.
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |