US4379253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ornamental lamp and method and apparatus for operation thereof
Assignee: MATTHEWS MICHAEL B
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Filing: 1981-01-28
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Granted: 1983-04-05
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Expires: 2001-01-28
Abstract
Abstract An ornamental lamp which includes a light transmitting envelope containing a fluid such as an inert gas or air and at least one electrode disposed within or without said envelope and applying high voltage at a high frequency to said electrode to ionize the fluid to produce ornamental displays and varying the characteristics of the displays by changing the magnitude of the voltage, the frequency and wave form through modulation and a power supply for operating said lamp utilizing a transformer having a high voltage secondary and two low voltage primaries with said primaries being connected to said amplifier to produce a positive feedback signal to cause oscillation thereof and filter means for effecting modulation of the feedback signal.
Inventors
- 👤 Robert E. Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:36
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/26; H05B41/28; H05B41/2806; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
171 words
A power supply for a three dimensional, colored, moving light display comprising a hollow light transmitting envelope having a gas sealed therein, electrode means for ionizing the gas within said envelope and power supply means for applying high voltage, high frequency energy to said electrode means to produce moving light emitting discharge paths with said envelope, the last said means including a transformer having at least two low voltage primaries and a high voltage secondary, an electronic amplifier, means including one of said primary windings for feeding a first voltage to said amplifier for the operation thereof, and means including the other of said primary windings for feeding a second voltage to the input of said amplifier, the other of said primary windings being phased relative to said one primary winding to provide positive feedback to said amplifier to cause it to oscillate, the last said means including an adjustable RC network to pulse modulate said oscillating amplifier whereby said secondary will produce high voltage, high frequency energy carrying pulse modulation.
Claim 2
Dependent Claim
171 words
A power supply for a three dimensional, colored, moving light display comprising a hollow light transmitting envelope having a gas sealed therein, electrode means for ionizing the gas within said envelope and power supply means for applying high voltage, high frequency energy to said electrode means to produce moving light emitting discharge paths with said envelope, the last said means including a transformer having at least two low voltage primaries and a high voltage secondary, an electronic amplifier, means including one of said primary windings for feeding a first voltage to said amplifier for the operation thereof, and means including the other of said primary windings for feeding a second voltage to the input of said amplifier, the other of said primary windings being phased relative to said one primary winding to provide positive feedback to said amplifier to cause it to oscillate, the last said means including an adjustable RC network to pulse modulate said oscillating amplifier whereby said secondary will produce high voltage, high frequency energy carrying pulse modulation.
Claim 3
Dependent Claim
57 words
A power supply according to claim 1 wherein said amplifier comprises a transister having a collector, base and emitter, said first voltage is fed to said collector, said second voltage is fed through a diode to said base and through a second diode to said collector, said base is biased to ground and said emitter is grounded.
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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) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |