US3830103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rain impact gage
Assignee: United States Department of the Army
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Filing: 1973-07-05
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Granted: 1974-08-20
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Expires: 1993-07-05
Abstract
Abstract A Projectile having a rain impact gage nose portion for use in determining the frequency and force of raindrops encountered by the projectile as it travels through a rain field. The gage has a forward impact table responsive to raindrop impacts and secured to a ground electrode housed with a hot electrode and an intermediate piezoelectric sensor in a cylindrical nylon insulator. The sensor receives the raindrop impact initiated shock waves from the ground electrode and transmits an electrical output charge through the hot electrode and its output lead to a coaxial cable after which the electric signal can be recorded on board or transmitted to a receiving station for recording.
Inventors
- 👤 R Andrejkovics
- 👤 J Sikra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:21
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/16; G01W; G01W1/00; G01W1/14; Y; Y10; Y10S; Y10S73/00; Y10S73/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
In a projectile body having a nose portion and a main body portion, said nose portion comprising a rain impact gage having a forwardmost impact table responsive to raindrop impacts, a ground electrode secured to a portion of said impact table, a cylindrical insulator housing said ground electrode and a hot electrode, a piezoelectric sensor located intermeidate said ground and hot electrodes for receiving a raindrop impact initiated shock wave from said ground electrode and transmitting an electrical output charge through said hot electrode, and a hot output lead secured to said hot electrode for transmitting said output charge through a rearwardly extending coaxial cable.
Claim 2
Dependent Claim
105 words
In a projectile body having a nose portion and a main body portion, said nose portion comprising a rain impact gage having a forwardmost impact table responsive to raindrop impacts, a ground electrode secured to a portion of said impact table, a cylindrical insulator housing said ground electrode and a hot electrode, a piezoelectric sensor located intermeidate said ground and hot electrodes for receiving a raindrop impact initiated shock wave from said ground electrode and transmitting an electrical output charge through said hot electrode, and a hot output lead secured to said hot electrode for transmitting said output charge through a rearwardly extending coaxial cable.
Claim 3
Dependent Claim
46 words
The structure according to claim 1 wherein said cylindrical insulator is of nylon material and has an apertured base portion surrounding a portion of said output lead and in abutment with an end surface of said hot electrode, and said hot electrode being of lead material.
Claim 4
Dependent Claim
48 words
The structure in accordance with claim 2 wherein a second cylindrical insulator surrounds a major portion of said hot output lead rearwardly of said apertured base portion and is carried by a pre-loading lead screw, said projectile nose and main body portions being secured to said lead screw.
Claim 5
Dependent Claim
65 words
The structure of claim 3 wherein said hot output lead has an enlarged head at its rearward end, said head having a lateral opening, a coaxial cable connector mounted in said projectile main body portion, and a copper core of one end of an insulated wire secured in said head lateral opening, the other end of said wire being secured to said coaxial cable connector.
Claim 6
Dependent Claim
27 words
The structure of claim 4 wherein an insulating disc surrounds a rearward portion of said hot output lead and extends between said head and said lead screw.
References Cited (Backward Citations)
US2944250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |