US3216456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for testing for leaks in vent pipes or the like
Assignee: Individual
•
Filing: 1964-01-20
•
Granted: 1965-11-09
•
Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Voie Richard La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:07
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A DEVICE FOR TESTING FOR LEAKS IN A PIPE, SAID DEVICE COMPRISING A RESILIENT CUP-SHAPED PLUG HAVING AN ANNULAR SKIRT WITH AN EXTERIOR SURFACE WHICH IS A SURFACE OF REVOLUTION ARCUATE IN CROSS SECTION AND AN INTERIOR SURFACE THAT DEFINES AN AXIAL CAVITY WHICH IS NON-CIRCULAR IN CROSS SECTION AND TAPERS FROM ONE END OF THE SKIRT TO THE OTHER, SAID SKIRT HAVING A RADIALLY CONTRACTED POSITION AND A RADIALLY EXPANDED POSITION, CONDUIT MEANS EXTENDING THROUGH THE PLUG AND INCLUDING TUBE MEANS THAT HAS A PORTION WHICH IS GENERALLY AXIALLY OF THE PLUG AND AN ADDITIONAL PORTION WHICH IS AT AN ANGLE TO THE FIRST-MEMTIONED PORTION, MEANS FOR SECURING THE PLUG MEANS RELATIVE TO THE CONDUIT MEANS, A SHIFTABLE PLUG-EXPANDING MEMBER WITHIN THE CAVITY AND
Claim 2
Independent Claim
125 words
A DEVICE FOR TESTING FOR LEAKS IN A PIPE, SAID DEVICE COMPRISING A RESILIENT CUP-SHAPED PLUG HAVING AN ANNULAR SKIRT WITH AN EXTERIOR SURFACE WHICH IS A SURFACE OF REVOLUTION ARCUATE IN CROSS SECTION AND AN INTERIOR SURFACE THAT DEFINES AN AXIAL CAVITY WHICH IS NON-CIRCULAR IN CROSS SECTION AND TAPERS FROM ONE END OF THE SKIRT TO THE OTHER, SAID SKIRT HAVING A RADIALLY CONTRACTED POSITION AND A RADIALLY EXPANDED POSITION, CONDUIT MEANS EXTENDING THROUGH THE PLUG AND INCLUDING TUBE MEANS THAT HAS A PORTION WHICH IS GENERALLY AXIALLY OF THE PLUG AND AN ADDITIONAL PORTION WHICH IS AT AN ANGLE TO THE FIRST-MEMTIONED PORTION, MEANS FOR SECURING THE PLUG MEANS RELATIVE TO THE CONDUIT MEANS, A SHIFTABLE PLUG-EXPANDING MEMBER WITHIN THE CAVITY AND
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |