US3298076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottom plates for moulds intended for the manufacture of cellular concrete and other materials in the manufacture of which great differences in temperature appear between the content of the moulds and the surrounding medium
Assignee: Ytong International AB
•
Filing: 1964-01-29
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Granted: 1967-01-17
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Soderlund Per-Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:05
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/40; B28B7/42; B28B1/00; B28B1/50; B28B1/503
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A MOLD BOTTOM FOR MOLDS USED IN THE MANUFACTURE OF MATERIALS IN WHICH SUBSTANTIAL TEMPERATURE DIFFERENCES OCCUR BETWEEN THE CONTENTS OF THE MOLD AND THE SURROUNDING MEDIUM, COMPRISING A FRAME, A MOLD BOTTOM PLATE ON SAID FRAME, AND MEANS ATTACHING SAID BOTTOM PLATE TO SAID FRAME TO PERMIT FREE EXTENSION OF THE BOTTOM PLATE IN THE LONGITUDINAL DIRECTION UPON EXPANDING OR CONTRACTING IN ACCORDANCE WITH TEMPERATURE CHANGES, SAID MEANS COMPRISING SPACING MEANS FOR MAINTAINING AN AIR GAP BETWEEN SAID BOTTOM PLATE AND SAID FRAME WHILE PERMITTING LONGITUDINAL EXTENSION OF SAID BOTTOM PLATE.
Claim 2
Dependent Claim
92 words
A MOLD BOTTOM FOR MOLDS USED IN THE MANUFACTURE OF MATERIALS IN WHICH SUBSTANTIAL TEMPERATURE DIFFERENCES OCCUR BETWEEN THE CONTENTS OF THE MOLD AND THE SURROUNDING MEDIUM, COMPRISING A FRAME, A MOLD BOTTOM PLATE ON SAID FRAME, AND MEANS ATTACHING SAID BOTTOM PLATE TO SAID FRAME TO PERMIT FREE EXTENSION OF THE BOTTOM PLATE IN THE LONGITUDINAL DIRECTION UPON EXPANDING OR CONTRACTING IN ACCORDANCE WITH TEMPERATURE CHANGES, SAID MEANS COMPRISING SPACING MEANS FOR MAINTAINING AN AIR GAP BETWEEN SAID BOTTOM PLATE AND SAID FRAME WHILE PERMITTING LONGITUDINAL EXTENSION OF SAID BOTTOM PLATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |