US3217661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hatch cover structure
Assignee: ACF Industries Inc
•
Filing: 1963-12-02
•
Granted: 1965-11-16
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Willard E Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:13
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/02; E05C3/04; E05C3/041; E05C3/045; B; B61; B61D; B61D7/00; F; F16; F16J; F16J13/00; F16J13/16; F16J13/18; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1041; Y10T292/1043; Y10T292/1075; Y10T292/1083; Y10T292/1089; Y10T292/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN AN ENCLOSED VESSEL HAVING A ROOF AND A ROOF OPENING EXTENDING THROUGH THE ROOF TO PERMIT ACCESS TO THE INTERIOR OF THE VESSEL, A HATCH FITTING EXTENDING ABOUT THE ROOF OPENING UPWARDLY OF THE ROOF, A HATCH COVER MOUNTED OVER SAID HATCH FITTING FOR PIVOTAL MOVEMENT BETWEEN OPEN AND CLOSED POSITIONS RELATIVE TO THE HATCH OPENINGS, THE HATCH COVER HAVING A RIM POSITIONED OUTWARDLY OF AND SPACED FROM THE HATCH FITTING WHEN THE HATCH COVER IS IN CLOSED POSITION, A RESILIENT SEALING MEMBER SECURED TO THE INNER PERIPHERY OF THE HATCH RIM AND HAVING A FREE UNRESTRAINED LIP ADAPTED TO FIT AGAINST THE OUTER PERIPHERY OF THE HATCH FITTING TO PROVIDE A SEAL BETWEEN THE HATCH FITTING AND HATCH COVER IN THE CLOSED POSITION OF THE COVER, AND MEANS TO RELEASABLY RETAIN THE HATCH COVER IN CLOSED POSITION OVER THE HATCH FITTING AND TO POSITION THE HATCH COVER AT A PREDETERMINED HEIGHT SPACED FROM THE UPPER EXTENDING EDGE OF THE HATCH FITTING IN THE CLOSED POSITION OF THE COVER WHEREBY SAID LIP IS EXPOSED TO THE INTERIOR OF THE VESSEL AND PRESSES AGAINST THE HATCH FITTING WITH A INCREASED SEALING FORCE UPON A POSITIVE PRESSURE BEING EXERTED INTERIORLY OF THE VESSEL.
Claim 2
Dependent Claim
202 words
IN AN ENCLOSED VESSEL HAVING A ROOF AND A ROOF OPENING EXTENDING THROUGH THE ROOF TO PERMIT ACCESS TO THE INTERIOR OF THE VESSEL, A HATCH FITTING EXTENDING ABOUT THE ROOF OPENING UPWARDLY OF THE ROOF, A HATCH COVER MOUNTED OVER SAID HATCH FITTING FOR PIVOTAL MOVEMENT BETWEEN OPEN AND CLOSED POSITIONS RELATIVE TO THE HATCH OPENINGS, THE HATCH COVER HAVING A RIM POSITIONED OUTWARDLY OF AND SPACED FROM THE HATCH FITTING WHEN THE HATCH COVER IS IN CLOSED POSITION, A RESILIENT SEALING MEMBER SECURED TO THE INNER PERIPHERY OF THE HATCH RIM AND HAVING A FREE UNRESTRAINED LIP ADAPTED TO FIT AGAINST THE OUTER PERIPHERY OF THE HATCH FITTING TO PROVIDE A SEAL BETWEEN THE HATCH FITTING AND HATCH COVER IN THE CLOSED POSITION OF THE COVER, AND MEANS TO RELEASABLY RETAIN THE HATCH COVER IN CLOSED POSITION OVER THE HATCH FITTING AND TO POSITION THE HATCH COVER AT A PREDETERMINED HEIGHT SPACED FROM THE UPPER EXTENDING EDGE OF THE HATCH FITTING IN THE CLOSED POSITION OF THE COVER WHEREBY SAID LIP IS EXPOSED TO THE INTERIOR OF THE VESSEL AND PRESSES AGAINST THE HATCH FITTING WITH A INCREASED SEALING FORCE UPON A POSITIVE PRESSURE BEING EXERTED INTERIORLY OF THE VESSEL.
References Cited (Backward Citations)
US1755015A
Cited
US2003113A
Cited
CH166482A
Cited
US2204328A
Cited
US2620206A
Cited
US2816683A
Cited
US3039837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |