US3571709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector for measuring icing rates over a plurality of periods of time
Assignee: Individual
•
Filing: 1969-05-21
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Granted: 1971-03-23
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Expires: 1989-05-21
Abstract
Abstract This invention is directed to an icing rate detector. The invention utilizes an icing switch and a heater which are mounted on the outside of an aircraft. When ice forms on the switch, it closes and energizes a heater which then melts the ice and causes the switch to open. The heater thus is cycled on and off when the aircraft is subjected to icing conditions. A rate detecting circuit measures the rate at which power is consumed over a fifteen second period and over a two minute period. These rates are directly proportional to the rate at which ice is formed on the aircraft.
Inventors
- 👤 Robert M Gaertner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:13
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
An icing rate detector comprising: power consuming means for removing ice from a surface; means for measuring in two finite periods of time the rate at which said power consuming means utilizes power; and display means for providing an indication of the rate measured in both of said finite periods of time by said means for measuring.
Claim 2
Dependent Claim
57 words
An icing rate detector comprising: power consuming means for removing ice from a surface; means for measuring in two finite periods of time the rate at which said power consuming means utilizes power; and display means for providing an indication of the rate measured in both of said finite periods of time by said means for measuring.
Claim 3
Dependent Claim
19 words
An icing rate detector as in claim 1 in which said means for measuring the rate utilizes a counter.
Claim 4
Dependent Claim
74 words
An icing rate detector as in claim 2 wherein: said means for measuring the rate further comprises gating means connected to be gated by said power consuming means; counting means connected to said gating means; and ratio means connected to receive the outputs of said counting means and said gating means and operable to provide an output which is proportional to the ratio of the outputs of said counting means and said gating means.
Claim 5
Dependent Claim
31 words
An icing rate detector as in claim 3 further comprising computing means connected to receive the output of said ratio means to average it over said two finite periods of time.
Claim 6
Dependent Claim
37 words
An icing rate detector as in claim 4 wherein said power consuming means comprises a heater and a switch mounted on said surface, said switch being responsive to the formation of ice to turn on said heater.
Claim 7
Dependent Claim
22 words
An icing rate detector as in claim 5 wherein said heater and switch are part of the deicing system of an aircraft.
References Cited (Backward Citations)
GB772188A
Cited
US3086393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |