US3042546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for impregnation of porous articles
Assignee: McGraw Edison Co
•
Filing: 1958-02-27
•
Granted: 1962-07-03
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Henningsen Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:17
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/12; B; B31; B31B; B31B50/00; B31B50/74; B31B50/742; B31B50/745; B31B50/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF IMPREGNATING A PLURALITY OF ELONGATED FIBRE TUBES WITH A SATURANT HAVING A SPECIFIC GRAVITY GREATER THAN THAT OF THE UNIMPREGNATED TUBES AND LESS THAN THAT OF THE IMPREGNATED TUBES COMPRISING THE STEPS OF DISPOSING SAID ELONGATED TUBES VERTICALLY WITHIN A COMMON ZONE IN A BODY OF THE SATURANT AND CONCURRENTLY CONFINING EACH OF SAID TUBES ALONG ITS OUTER WALL TO PRE CLUDE EXTENSIVE LATERAL MOVEMENT AND CONTACT BETWEEN THE TUBES WHILE PERMITTING INDEPENDENT VERTICAL MOVEMENT, RETAINING SAID TUBES IN SAID BODY OF SATURANT UNTIL COMPLETE IMPREGNATION IS ACHIEVED, WHEREBY SAID TUBES INDEPENDENTLY RISE IN SAID SATURANT WHEN FIRST DISPOSED THEREIN AND THEN SINK DURING THE IMPREGNATION, SAID REMOVING SAID TUBES FROM SAID SATURANT.
Claim 2
Independent Claim
116 words
THE METHOD OF IMPREGNATING A PLURALITY OF ELONGATED FIBRE TUBES WITH A SATURANT HAVING A SPECIFIC GRAVITY GREATER THAN THAT OF THE UNIMPREGNATED TUBES AND LESS THAN THAT OF THE IMPREGNATED TUBES COMPRISING THE STEPS OF DISPOSING SAID ELONGATED TUBES VERTICALLY WITHIN A COMMON ZONE IN A BODY OF THE SATURANT AND CONCURRENTLY CONFINING EACH OF SAID TUBES ALONG ITS OUTER WALL TO PRE CLUDE EXTENSIVE LATERAL MOVEMENT AND CONTACT BETWEEN THE TUBES WHILE PERMITTING INDEPENDENT VERTICAL MOVEMENT, RETAINING SAID TUBES IN SAID BODY OF SATURANT UNTIL COMPLETE IMPREGNATION IS ACHIEVED, WHEREBY SAID TUBES INDEPENDENTLY RISE IN SAID SATURANT WHEN FIRST DISPOSED THEREIN AND THEN SINK DURING THE IMPREGNATION, SAID REMOVING SAID TUBES FROM SAID SATURANT.
References Cited (Backward Citations)
US1456323A
Cited
US1739794A
Cited
US1864674A
Cited
US1973080A
Cited
US2012968A
Cited
US2012969A
Cited
US2042678A
Cited
US2158334A
Cited
US2478439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |