US3942381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic pressure test method and apparatus
Assignee: Individual
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Filing: 1974-01-29
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Granted: 1976-03-09
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Expires: 1994-01-29
Abstract
Abstract An ultrasonic pressure test method and apparatus that utilizes a reflectoscope, and an oscilloscope and an ultrasonic crystal and wherein the length of time that it takes for an echo to be returned is measured to provide a method and means for measuring and using the ultrasonic readings to determine whether the contents or pressure of a bottle, container or other member is proper or of the desired or safe quantity.
Inventors
- 👤 William G. Brown
- 👤 Lee C. Paxton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:05
CPC Classifications
G; G01; G01L; G01L11/00; G01L11/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
In an ultrasonic pressure testing apparatus, a reflectoscope, an oscilloscope, electrical circuit means electrically connecting said reflectoscope to said oscilloscope, an ultrasonic crystal providing a transducer, and electrical cable means connecting said transducer to said reflectoscope, said apparatus using ultrasonic sound to measure the pressure of gas in containers, and wherein when the transducer is placed against one side of a container a measurement is taken of the time required for an impulse of a high frequency sound wave to travel through the contents of the container, echo off the far side of the container, and return to the receiver transmitter crystal.
Claim 2
Dependent Claim
102 words
In an ultrasonic pressure testing apparatus, a reflectoscope, an oscilloscope, electrical circuit means electrically connecting said reflectoscope to said oscilloscope, an ultrasonic crystal providing a transducer, and electrical cable means connecting said transducer to said reflectoscope, said apparatus using ultrasonic sound to measure the pressure of gas in containers, and wherein when the transducer is placed against one side of a container a measurement is taken of the time required for an impulse of a high frequency sound wave to travel through the contents of the container, echo off the far side of the container, and return to the receiver transmitter crystal.
Claim 3
Independent Claim
108 words
A method of using ultrasonic sound to measure directly the pressure of gas in bottles or other containers or systems comprising placing an ultrasonic crystal transducer against the side of the container, connecting a reflectoscope to the crystal, connecting an oscilloscope to the reflectoscope, driving the crystal at an ultrasonic frequency to send a high frequency impulse through the container to its far side, receiving an echo impulse from the far side of the container in response to the driven impulse, and measuring the time lapse between the driven impulse and receipt of the echo, the lapsed time being indicative of the pressure of gas within the container.
Claim 4
Independent Claim
108 words
A method of using ultrasonic sound to measure directly the pressure of gas in bottles or other containers or systems comprising placing an ultrasonic crystal transducer against the side of the container, connecting a reflectoscope to the crystal, connecting an oscilloscope to the reflectoscope, driving the crystal at an ultrasonic frequency to send a high frequency impulse through the container to its far side, receiving an echo impulse from the far side of the container in response to the driven impulse, and measuring the time lapse between the driven impulse and receipt of the echo, the lapsed time being indicative of the pressure of gas within the container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |