US3346051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot operated fire protection device
Assignee: Grinnell Corp
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Filing: 1965-09-02
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Granted: 1967-10-10
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Philip H Merdinyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:04
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/08; A62C37/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A DISCHARGE OUTLET AND VALVE FOR A FIRE PROTECTION SYSTEM COMPRISING: (A) A HOLLOW BODY CONTAINING AN UNOBSTRUCTED JUNCTION CHAMBER THEREIN, (B) AN INLET PASSAGEWAY EXTENDING THROUGH A WALL OF SAID BODY AND TERMINATING AT A SEATING LIP DEFINED BY THE END OF THE WALL OF SAID INLET PASSAGEWAY WITHIN SAID JUNCTION CHAMBER, (C) AN OUTLET PASSAGEWAY COLINEARLY ORIENTED WITH RE SPECT TO SAID INLET PASSAGEWAY, AND SPACED THEREFROM, EXTENDING FROM SAID JUNCTION CHAMBER THROUGH AN OPPOSITE SECOND WALL OF SAID BODY, (D) A PILOT PASSAGEWAY EXTENDING FROM SAID JUNCTION CHAMBER THROUGH A THIRD WALL OF SAID BODY INTERMEDIATE SAID INLET AND OUTLET PASSAGEWAYS, SAID PILOT PASSAGEWAY: (I) BEING ORIENTED LATERALLY TO SAID INLET AND OUTLET PASSAGEWAYS, (II) CONTAINING A RECIPROCABLY SLIDABLE FLUID PRESSURE ACTUATED PISTON SEALINGLY ENGAGING THE WALLS OF SAID PILOT PASSAGEWAY, SAID PISTON: (A) HAVING A SEATING FACE AT ITS END EXTENDING TOWARD SAID JUNCTION CHAMBER, ADAPTED TO SEALINGLY ENGAGE SAID SEATING LIP, (E) AT LEAST ONE OF SAID SEATING LIP AND SAID SEATING FACE BEING ANGLED SUBSTANTIALLY LESS THAN 90* AND SUBSTANTIALLY MORE THAN 0* TO THE AXIS OF ITS RELATED PASSAGEWAY.
Claim 2
Dependent Claim
186 words
A DISCHARGE OUTLET AND VALVE FOR A FIRE PROTECTION SYSTEM COMPRISING: (A) A HOLLOW BODY CONTAINING AN UNOBSTRUCTED JUNCTION CHAMBER THEREIN, (B) AN INLET PASSAGEWAY EXTENDING THROUGH A WALL OF SAID BODY AND TERMINATING AT A SEATING LIP DEFINED BY THE END OF THE WALL OF SAID INLET PASSAGEWAY WITHIN SAID JUNCTION CHAMBER, (C) AN OUTLET PASSAGEWAY COLINEARLY ORIENTED WITH RE SPECT TO SAID INLET PASSAGEWAY, AND SPACED THEREFROM, EXTENDING FROM SAID JUNCTION CHAMBER THROUGH AN OPPOSITE SECOND WALL OF SAID BODY, (D) A PILOT PASSAGEWAY EXTENDING FROM SAID JUNCTION CHAMBER THROUGH A THIRD WALL OF SAID BODY INTERMEDIATE SAID INLET AND OUTLET PASSAGEWAYS, SAID PILOT PASSAGEWAY: (I) BEING ORIENTED LATERALLY TO SAID INLET AND OUTLET PASSAGEWAYS, (II) CONTAINING A RECIPROCABLY SLIDABLE FLUID PRESSURE ACTUATED PISTON SEALINGLY ENGAGING THE WALLS OF SAID PILOT PASSAGEWAY, SAID PISTON: (A) HAVING A SEATING FACE AT ITS END EXTENDING TOWARD SAID JUNCTION CHAMBER, ADAPTED TO SEALINGLY ENGAGE SAID SEATING LIP, (E) AT LEAST ONE OF SAID SEATING LIP AND SAID SEATING FACE BEING ANGLED SUBSTANTIALLY LESS THAN 90* AND SUBSTANTIALLY MORE THAN 0* TO THE AXIS OF ITS RELATED PASSAGEWAY.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |