US3210987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic measuring circuit
Assignee: Milacron Inc
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Filing: 1963-09-23
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Granted: 1965-10-12
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Edward C Bruns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:13
CPC Classifications
D; D06; D06B; D06B17/00; D06B17/02; G; G01; G01B; G01B13/00; G01B13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
152 words
IN A PNEUMATIC CIRCUIT FOR MEASURING A WORKPIECE, (A) A SENSING LINE CONNECTED TO A SOURCE OF AIR UNDER PRESSURE AND TERMINATING AT A GAP WHICH VARIES WHEN THE SIZE OF THE WORKPIECE TO BE MEASURED VARIES, (B) MEANS DEFINING A RESTRICTED PASSAGE HAVING ONE END CONNECTED TO SAID SENSING LINE, (C) A SIGNAL LINE CONNECTED TO THE OTHER END OF SAID RESTRICTED PASSAGE, (D) A SIZE INDICATING DEVICE CONNECTED TO SAID SIGNAL LINE, (E) AND A PNEUMATIC VALVE HAVING A PASSAGE CONNECTING SAID SIGNAL LINE TO SAID SENSING LINE AROUND SAID RESTRICTED PASSAGE WHEN THE VALVE PASSAGE IS UNOBSTRUCTED, SAID VALVE HAVING A FLEXIBLE DIAPHRAGM THEREIN HAVING ONE SIDE EXPOSED TO PRESSURE IN SAID SENSING LINE AND THE OTHER SIDE EXPOSED TO PRESSURE IN SAID SIGNAL LINE, SAID DIAPHRAGM MOVABLE IN RESPONSE TO A CHANGING PRESSURE DIFFERENTIAL THERON TO CONTROL SAID VALVE PASSAGE AS THE PRESSURE CHANGES IN THE SENSING LINE.
References Cited (Backward Citations)
US2841006A
Cited
US2897670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |