US3129722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic indicating and relay devices
Assignee: Robertshaw Controls Co
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Filing: 1961-02-15
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Granted: 1964-04-21
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Expires: 1981-02-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:21
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0405; Y; Y10; Y10S; Y10S116/00; Y10S116/42; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/264; Y10T137/8158; Y10T137/8225; Y10T137/8242; Y10T137/8326; Y10T137/8593; Y10T137/87169; Y10T137/87217; Y10T137/87225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A PNEUMATIC INDICATING DEVICE, THE COMBINATION COMPRISING A VALVE BODY HAVING AN INLET PRESSURE CHAMBER ADAPTED TO BE CONNECTED TO A PNEUMATIC SUPPLY AND A TRANSMITTER PRESSURE CHAMBER ADAPTED TO BE CONNECTED TO A CONDITION RESPONSIVE TRANSMITTER, MEANS INCLUDING A RESTRICTED ORIFICE TO ESTABLISH COMMUNICATION BETWEEN SAID INLET PRESSURE CHAMBER AND SAID TRANSMITTER PRESSURE CHAMBER, DIFFERENTIAL PRESSURE RESPONSIVE ACTUATING MEANS CARRIED BY SAID VALVE BODY, A PASSAGEWAY COMMUNICATING WITH SAID INLET PRESSURE CHAMBER AND ESTABLISHING A FIRST PRESSURE FOR SAID PRESSURE RESPONSIVE MEANS, A SECOND PASSAGEWAY COMMUNICATING WITH SAID TRANSMITTER PRESSURE CHAMBER AND ESTABLISHING A SECOND PRESSURE FOR SAID PRESSURE RESPONSIVE MEANS, INDICATING MEANS OPERATIVELY DISPOSED FOR MOVEMENT BY SAID PRESSURE RESPONSIVE ACTUATING MEANS TO A POSITION TO INDICATE THE EXISTENCE OF A DIFFERENTIAL PRESSURE ACTING ON SAID PRESSURE RESPONSIVE MEANS, AND RESET MEANS FOR RETURNING SAID INDICATING MEANS TO A POSITION TO INDICATE THE EXISTENCE OF EQUAL PRESSURE ON SAID PRESSURE RESPONSIVE MEANS.
Claim 2
Dependent Claim
155 words
IN A PNEUMATIC INDICATING DEVICE, THE COMBINATION COMPRISING A VALVE BODY HAVING AN INLET PRESSURE CHAMBER ADAPTED TO BE CONNECTED TO A PNEUMATIC SUPPLY AND A TRANSMITTER PRESSURE CHAMBER ADAPTED TO BE CONNECTED TO A CONDITION RESPONSIVE TRANSMITTER, MEANS INCLUDING A RESTRICTED ORIFICE TO ESTABLISH COMMUNICATION BETWEEN SAID INLET PRESSURE CHAMBER AND SAID TRANSMITTER PRESSURE CHAMBER, DIFFERENTIAL PRESSURE RESPONSIVE ACTUATING MEANS CARRIED BY SAID VALVE BODY, A PASSAGEWAY COMMUNICATING WITH SAID INLET PRESSURE CHAMBER AND ESTABLISHING A FIRST PRESSURE FOR SAID PRESSURE RESPONSIVE MEANS, A SECOND PASSAGEWAY COMMUNICATING WITH SAID TRANSMITTER PRESSURE CHAMBER AND ESTABLISHING A SECOND PRESSURE FOR SAID PRESSURE RESPONSIVE MEANS, INDICATING MEANS OPERATIVELY DISPOSED FOR MOVEMENT BY SAID PRESSURE RESPONSIVE ACTUATING MEANS TO A POSITION TO INDICATE THE EXISTENCE OF A DIFFERENTIAL PRESSURE ACTING ON SAID PRESSURE RESPONSIVE MEANS, AND RESET MEANS FOR RETURNING SAID INDICATING MEANS TO A POSITION TO INDICATE THE EXISTENCE OF EQUAL PRESSURE ON SAID PRESSURE RESPONSIVE MEANS.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |