Patent US3626470A successfully refreshed from Google Patents.
Patent US3345872A successfully refreshed from Google Patents.
US3345872A
Expired / Lapsed
US
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Sight glass assembly
Assignee: Individual
•
Filing: 1964-04-29
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Granted: 1967-10-10
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Charles E Meginnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/007; F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A SIGHT GLASS ASSEMBLY COMPRISING A HOUSING STRUCTURE HAVING A CIRCULAR OPENING THERETHROUGH, SAID OPENING HAVING AN ENLARGED SECTION PROVIDING AN ANNULAR SHOULDER, A CIRCULAR SIGHT GLASS MOUNTED ON SAID ANNULAR SHOULDER, ANNULAR SEALING MEANS CONSISTING OF A RESILIENT MATERIAL DISPOSED ABOUT THE PERIPHERY OF SAID SIGHT GLASS, AN ANNULAR INSERT CONSISTING OF A CORROSIVE RESISTANT MATERIAL INTERPOSED BETWEEN SAID SEALING MEANS AND SAID HOUSING STRUCTURE INCLUDING AN INWARDLY EXTENDING ANNULAR FLANGE PORTION INTERPOSED BETWEEN SAID SEALING MEANS AND SAID HOUSING STRUCTURE, AND SAID OPENING AND MEANS ENGAGEABLE WITH SAID SEALING MEANS FOR COMPRESSING SAID SEALING MEANS AGAINST SAID SIGHT GLASS AND SAID INSERT
Claim 2
Dependent Claim
104 words
A SIGHT GLASS ASSEMBLY COMPRISING A HOUSING STRUCTURE HAVING A CIRCULAR OPENING THERETHROUGH, SAID OPENING HAVING AN ENLARGED SECTION PROVIDING AN ANNULAR SHOULDER, A CIRCULAR SIGHT GLASS MOUNTED ON SAID ANNULAR SHOULDER, ANNULAR SEALING MEANS CONSISTING OF A RESILIENT MATERIAL DISPOSED ABOUT THE PERIPHERY OF SAID SIGHT GLASS, AN ANNULAR INSERT CONSISTING OF A CORROSIVE RESISTANT MATERIAL INTERPOSED BETWEEN SAID SEALING MEANS AND SAID HOUSING STRUCTURE INCLUDING AN INWARDLY EXTENDING ANNULAR FLANGE PORTION INTERPOSED BETWEEN SAID SEALING MEANS AND SAID HOUSING STRUCTURE, AND SAID OPENING AND MEANS ENGAGEABLE WITH SAID SEALING MEANS FOR COMPRESSING SAID SEALING MEANS AGAINST SAID SIGHT GLASS AND SAID INSERT
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 |