Patent US2665823A successfully refreshed from Google Patents.
Patent US3236529A successfully refreshed from Google Patents.
US3236529A
Expired / Lapsed
US
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Mechanical seal
Assignee: Ingersoll Rand Co
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Filing: 1963-04-18
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Granted: 1966-02-22
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Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 George H Heim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:32
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3404; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A MECHANICAL SEAL HAVING A STATIONARY SEAL FACE AND A ROTATING SEAL FACE COMPRISING: (A) A FIRST MEANS TO PROVIDE LUBRICATING FLUID BETWEEN SAID FACES; (B) CIRCULATING MEANS OPERATIVELY ASSOCIATED WITH SAID FIRST MEANS TO CIRCULATE SAID LUBRICATING FLUID; (C) COOLING MEANS CONNECTED TO SAID CIRCULATING MEANS TO COOL SAID LUBRICATING FLUID, AND (D) AN AUXILIARY TREATING ASSEMBLY OPERATIVELY ASSOCIATED WITH SAID COOLING MEANS TO TREAT SAID LUBRICATING FLUID, SAID AUXILIARY TREATING ASSEMBLY COMPRISNG: (1) A SUPPLY RESERVOIR,
Claim 2
Dependent Claim
78 words
A MECHANICAL SEAL HAVING A STATIONARY SEAL FACE AND A ROTATING SEAL FACE COMPRISING: (A) A FIRST MEANS TO PROVIDE LUBRICATING FLUID BETWEEN SAID FACES; (B) CIRCULATING MEANS OPERATIVELY ASSOCIATED WITH SAID FIRST MEANS TO CIRCULATE SAID LUBRICATING FLUID; (C) COOLING MEANS CONNECTED TO SAID CIRCULATING MEANS TO COOL SAID LUBRICATING FLUID, AND (D) AN AUXILIARY TREATING ASSEMBLY OPERATIVELY ASSOCIATED WITH SAID COOLING MEANS TO TREAT SAID LUBRICATING FLUID, SAID AUXILIARY TREATING ASSEMBLY COMPRISNG: (1) A SUPPLY RESERVOIR,
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |