Patent US3200987A successfully refreshed from Google Patents.
US3200987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal fuse screw
Assignee: Bendix Corp
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Filing: 1961-11-03
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Granted: 1965-08-17
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Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Richard F Horner
- 👤 Joseph A Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:31
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496; B64; B64C; B64C25/00; B64C25/32; B64C25/34; B64C25/36; F; F16; F16K; F16K17/00; F16K17/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A THERMAL FUSE SCREW FOR USE WITH A PRESSURIZED VESSEL COMPRISING: A SCREW BODY HAVING A STEPPED DIAMETER THROUGH-BORE FORMED SUBSTANTIALLY ALONG THE LONGITUDINAL AXIS OF SAID SCREW BODY, SAID STEPPED DIAMETER HAVING A FIRST SMALL DIAMETER PASSAGE SECTION AND A SECOND LARGER DIAMETER PASSAGE SECTION FORMING A SHOULDER AT THE JUNCTION OF SAID PASSAGES, SAID PASSAGES ARRANGED SUCH THAT SAID SMALL DIAMETER PASSAGE SECTION IS ON THE PRESSURIZED SIDE OF SAID SCREW BODY RELATIVE TO SAID SECOND LARGER DIAMETER PASSAGE SECTION, AND A RESILIENT PREFORMED SPHERICAL SEAL DISPOSED IN SAID SMALL DIAMETER PASSAGE SECTION OPERATIVE TO SEALINGLY ENGAGE SAID SCREW BODY, A FUSIBLE ALLOY PLUG REMOVABLY DISPOSED IN SAID LARGER DIAMETER PASSGE SECTION OPERATIVE TO RESTRAIN SAID SEAL AGAINST EXPULSION FROM SAID THROUGHBORE UNDER PRESSURE FORCES WITHIN THE PRESSURIZED VESSEL, MEANS PERIPHERALLY SECURING SAID ALLOY PLUG IN SAID LARGER DIAMETER PASSAGE SECTION, SAID FUSIBLE ALLOY PLUG OPRATIVE ON MELTING TO PERMIT SAID SPHERICAL SEAL BEING EXPE LED FROM SAID THROUGH-BORE UNDER INFLUENCE OF PRESSURE CONTAINED IN THE PRESSURIZED VESSEL.
Claim 2
Dependent Claim
170 words
A THERMAL FUSE SCREW FOR USE WITH A PRESSURIZED VESSEL COMPRISING: A SCREW BODY HAVING A STEPPED DIAMETER THROUGH-BORE FORMED SUBSTANTIALLY ALONG THE LONGITUDINAL AXIS OF SAID SCREW BODY, SAID STEPPED DIAMETER HAVING A FIRST SMALL DIAMETER PASSAGE SECTION AND A SECOND LARGER DIAMETER PASSAGE SECTION FORMING A SHOULDER AT THE JUNCTION OF SAID PASSAGES, SAID PASSAGES ARRANGED SUCH THAT SAID SMALL DIAMETER PASSAGE SECTION IS ON THE PRESSURIZED SIDE OF SAID SCREW BODY RELATIVE TO SAID SECOND LARGER DIAMETER PASSAGE SECTION, AND A RESILIENT PREFORMED SPHERICAL SEAL DISPOSED IN SAID SMALL DIAMETER PASSAGE SECTION OPERATIVE TO SEALINGLY ENGAGE SAID SCREW BODY, A FUSIBLE ALLOY PLUG REMOVABLY DISPOSED IN SAID LARGER DIAMETER PASSGE SECTION OPERATIVE TO RESTRAIN SAID SEAL AGAINST EXPULSION FROM SAID THROUGHBORE UNDER PRESSURE FORCES WITHIN THE PRESSURIZED VESSEL, MEANS PERIPHERALLY SECURING SAID ALLOY PLUG IN SAID LARGER DIAMETER PASSAGE SECTION, SAID FUSIBLE ALLOY PLUG OPRATIVE ON MELTING TO PERMIT SAID SPHERICAL SEAL BEING EXPE LED FROM SAID THROUGH-BORE UNDER INFLUENCE OF PRESSURE CONTAINED IN THE PRESSURIZED VESSEL.
References Cited (Backward Citations)
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US1670764A
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US1744977A
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US1924417A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |