Patent US3310197A successfully refreshed from Google Patents.
US3310197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety vent
Assignee: Midland Manufacturing Corp
•
Filing: 1965-05-17
•
Granted: 1967-03-21
•
Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Folmsbee
- 👤 Ralph G Portis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:13
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A SAFETY VENT COMPRISING: A BASE ADAPTED TO BE SECURED AROUND AN OPENING IN A PRESSURE VESSEL, SAID BASE HAVING A CENTRAL OPENING AND SPACED MOUNTING PORTIONS; A RETAINER HAVING A CENTRAL OPENING ALIGNED WITH THE CENTRAL OPENING IN SAID BASE AND SPACED PARTS ALIGNED GENERALLY WITH SAID SPACED MOUNTING PORTIONS, SAID PARTS EACH HAVING A LATERALLY OPENING RECESS THEREIN; A REPLACEABLE FRANGIBLE MEMBER CLAMPED BETWEEN SAID BASE AND SAID RETAINER AND CLOSING SAID CENTRAL OPENINGS; QUICK-ACTING SECURING MEANS ON AT LEAST ALL BUT ONE OF SAID SPACED MOUNTING PORTIONS ENTERING SAID LATERALLY OPENING RECESSES IN SAID SPACED PARTS OF SAIE RETAINER SAID QUICK-ACTING SECURING MEANS INCLUDING THREADED MEMBERS AND NUTS THEREON; A CAP OVER SAID RETAINER, SAID CAP PIVOTED TO SAID BASE FOR OPENING AND CLOSING ACTION; AND MEANS DETACHABLY RETAINING SAID CAP IN CLOSED POSITION, WHEREBY SAID CAP READILY IS OPENED FOR INSPECTION OF SAID FRANGIBLE MEMBER, AND A RUPTURED FRANGIBLE MEMBER EASILY IS REMOVED AND REPLACED BY LOOSENING SAID NUTS OF SAID QUICK-ACTING SECURING MEANS AND DISPLACING SAID RETAINER.
Claim 2
Dependent Claim
172 words
A SAFETY VENT COMPRISING: A BASE ADAPTED TO BE SECURED AROUND AN OPENING IN A PRESSURE VESSEL, SAID BASE HAVING A CENTRAL OPENING AND SPACED MOUNTING PORTIONS; A RETAINER HAVING A CENTRAL OPENING ALIGNED WITH THE CENTRAL OPENING IN SAID BASE AND SPACED PARTS ALIGNED GENERALLY WITH SAID SPACED MOUNTING PORTIONS, SAID PARTS EACH HAVING A LATERALLY OPENING RECESS THEREIN; A REPLACEABLE FRANGIBLE MEMBER CLAMPED BETWEEN SAID BASE AND SAID RETAINER AND CLOSING SAID CENTRAL OPENINGS; QUICK-ACTING SECURING MEANS ON AT LEAST ALL BUT ONE OF SAID SPACED MOUNTING PORTIONS ENTERING SAID LATERALLY OPENING RECESSES IN SAID SPACED PARTS OF SAIE RETAINER SAID QUICK-ACTING SECURING MEANS INCLUDING THREADED MEMBERS AND NUTS THEREON; A CAP OVER SAID RETAINER, SAID CAP PIVOTED TO SAID BASE FOR OPENING AND CLOSING ACTION; AND MEANS DETACHABLY RETAINING SAID CAP IN CLOSED POSITION, WHEREBY SAID CAP READILY IS OPENED FOR INSPECTION OF SAID FRANGIBLE MEMBER, AND A RUPTURED FRANGIBLE MEMBER EASILY IS REMOVED AND REPLACED BY LOOSENING SAID NUTS OF SAID QUICK-ACTING SECURING MEANS AND DISPLACING SAID RETAINER.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |