Patent US1831536A successfully refreshed from Google Patents.
US3779488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric system of a device for deicing the surface of thinwalled structures
Assignee: Individual
•
Filing: 1972-02-15
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Granted: 1973-12-18
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Expires: 1992-02-15
Abstract
Abstract A system is disclosed for deicing the skin surface of aircraft and comprises a power supply unit to which are connected an electrical power accumulator and a program switch. Low inertia converters such as magnetostrictive vibrators are provided in close proximity to the skin surface and are fed from the power supply unit via key switches each having one input connected to the electrical power accumulator while its second input is connected to the program selector switch such that the switch will produce successive single or bundles of electrical pulses separated by pauses at the converters.
Inventors
- 👤 I Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:49
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/023; B63; B63B; B63B59/00; B63B59/04; B64; B64D; B64D15/00; B64D15/16; B64D15/163; H; H01; H01Q; H01Q1/00; H01Q1/02; B06B2201/00; B06B2201/50; B06B2201/58; B06B2201/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
An electric system of a device for deicing the surface of thin-walled structures, mostly the skin surface of aircrafts, comprising: a power supply unit; an electric-pulse ultrasonic- or audio-frequency generator connected to said power supply unit; a pulse generator connected to said power supply unit; a modulator one of whose inputs is connected to said electric pulse generator, whereas the second input of said modulator is connected to said pulse generator; a program selector switch connected to said power supply unit; converters adapted to convert electric pulses into mechanical pulses, said conVerters being provided in a close proximity to said skin; key switches made as electron tubes and provided one by one before each of said converters; each of said key switches being electrically connected by its input to said respective converter, whereas one of the inputs of said key switches is connected to said modulator, while the second input of said key switch is connected to both the power supply unit and the program selector switch adapted to switch in the respective key switch to the modulator.
Claim 2
Dependent Claim
178 words
An electric system of a device for deicing the surface of thin-walled structures, mostly the skin surface of aircrafts, comprising: a power supply unit; an electric-pulse ultrasonic- or audio-frequency generator connected to said power supply unit; a pulse generator connected to said power supply unit; a modulator one of whose inputs is connected to said electric pulse generator, whereas the second input of said modulator is connected to said pulse generator; a program selector switch connected to said power supply unit; converters adapted to convert electric pulses into mechanical pulses, said conVerters being provided in a close proximity to said skin; key switches made as electron tubes and provided one by one before each of said converters; each of said key switches being electrically connected by its input to said respective converter, whereas one of the inputs of said key switches is connected to said modulator, while the second input of said key switch is connected to both the power supply unit and the program selector switch adapted to switch in the respective key switch to the modulator.
Claim 3
Dependent Claim
96 words
An electric system as claimed in claim 1 wherein provided before each of the converters adapted to convert electric oscillations into mechanical oscillations, is a power amplifier one of whose inputs is connected via a program selector switch to the modulator, whereas the second input of said power amplifier is connected to the key switch, one of whose inputs being connected via an electric power accumulator and a program selector switch, to the power supply unit, while the second input of said key switch is likewise connected via the program selector switch to the pulse generator.
Claim 4
Dependent Claim
16 words
An electric system as claimed in claim 1 wherein said low inertia converters are magnetostrictive vibrators.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |