US3688554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing manometric instruments
Assignee: Individual
•
Filing: 1971-06-17
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Granted: 1972-09-05
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Expires: 1991-06-17
Abstract
Abstract An apparatus for testing fluid pressure relays providing an airpressure output signal in response to an air pressure input signal, including an input pressure generator, a pair of pressure-responsive members connected through a balanced arm and reproducing in association with this arm the rated value of the transformation factor of the manometric instrument under testing; and the indicator of the position on the balanced arm, comprising a movable member carried by this balanced arm and a stationary member mounted in opposition to the movable member. The apparatus further comprisis a power output member pneumatically connected with the indicator of the position of the balanced arm and operatively associated through a pivoted arm with this balanced arm, and a double-channel recording device. The apparatus provides for testing and gauging manometric instruments with the testing error up to 0.1 percent it also records continuous diagrams of the errors of these instruments and the values of the output pressure thereof on the moving record tape of the secondary double-channel recording device.
Inventors
- 👤 Aron Mikhailovich Kipnis
- 👤 Stella Mikhailovna Kesselman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
G; G01; G01L; G01L27/00; G01L27/002; G01L27/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
324 words
An apparatus for testing fluid pressure relays with an airpressure output signal in a response to an air pressure input signal, comprising: a generator of input pressure variable according to a pre-determined pattern, pneumatically connected with the manometric instrument under testing for supplying airpressure signals thereto and receiving air-pressure signals thereform; a first pressure-responsive member pneumatically connected with said generator of input pressure for supplying air-pressure signals to said pressure-responsive member; a balanced pivoted arm operatively associated with said first pressure-responsive member; a second pressure-responsive member operatively associated with said balanced arm and pneumatically connected with said manometric instrument under testing for receiving the output air-pressure signal from said instrument; an indicator of the position of said balanced arm, responsive to the deviations of said balanced arm from its zero position, such deviations being representative of the value of an error of said manometric instrument under testing; a movable member of said indicator of the position of said balanced arm, carried by said balanced arm; a stationary member of said indicator of the position of said balanced arm, mounted in opposition to said movable member; a power output member pneumatically connected to said indicator of the position of said balanced arm; a pivoted arm operatively associated with said power member and with said balanced arm; a secondary double-channel recording device having the first channel thereof pneumatically connected with said indicator of the position of said balanced arm, for recording the output air-pressure signal coming from said indicator and being representative of the value of an error of said manometric instrument under testing, the second channel of said recording device being pneumatically connected with said instrument under testing, for recording the air-pressure output signals of said instrument; an air-pressure supply source connected to supply pressurized air, respectively, to said input pressure generator, to said indicator of the position of said balanced arm, to said manometric instrument under testing and to said secondary doublechannel recording device.
Claim 2
Independent Claim
324 words
An apparatus for testing fluid pressure relays with an airpressure output signal in a response to an air pressure input signal, comprising: a generator of input pressure variable according to a pre-determined pattern, pneumatically connected with the manometric instrument under testing for supplying airpressure signals thereto and receiving air-pressure signals thereform; a first pressure-responsive member pneumatically connected with said generator of input pressure for supplying air-pressure signals to said pressure-responsive member; a balanced pivoted arm operatively associated with said first pressure-responsive member; a second pressure-responsive member operatively associated with said balanced arm and pneumatically connected with said manometric instrument under testing for receiving the output air-pressure signal from said instrument; an indicator of the position of said balanced arm, responsive to the deviations of said balanced arm from its zero position, such deviations being representative of the value of an error of said manometric instrument under testing; a movable member of said indicator of the position of said balanced arm, carried by said balanced arm; a stationary member of said indicator of the position of said balanced arm, mounted in opposition to said movable member; a power output member pneumatically connected to said indicator of the position of said balanced arm; a pivoted arm operatively associated with said power member and with said balanced arm; a secondary double-channel recording device having the first channel thereof pneumatically connected with said indicator of the position of said balanced arm, for recording the output air-pressure signal coming from said indicator and being representative of the value of an error of said manometric instrument under testing, the second channel of said recording device being pneumatically connected with said instrument under testing, for recording the air-pressure output signals of said instrument; an air-pressure supply source connected to supply pressurized air, respectively, to said input pressure generator, to said indicator of the position of said balanced arm, to said manometric instrument under testing and to said secondary doublechannel recording device.
Claim 3
Dependent Claim
42 words
An apparatus as of claim 1, wherein said movable member of said indicator of the position of said balanced arm is in the form of choke, and said stationary member of said indicator is in the form of a fluid jet nozzle.
Claim 4
Independent Claim
20 words
An apparatus as of claims 1 and 2, wherein said power output member is in the form of a bellows.
References Cited (Backward Citations)
SU195170A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |