US2836848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming calcium silicate products
Assignee: OI Glass Inc
•
Filing: 1953-03-27
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Granted: 1958-06-03
•
Expires: 1973-03-27
Abstract
No abstract record available.
Inventors
- 👤 Harold F Zink
- 👤 William C Taylor
- 👤 Clarence D Pawlicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:48
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/02; B; B28; B28B; B28B3/00; B28B3/006; B28B7/00; B28B7/40; B28B7/42; Y; Y10; Y10S; Y10S264/00; Y10S264/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A DEVICE FOR FORMING A REACTED AND INTEGRATED PRODUCT FROM A MOLDING MATERIAL THE COMBINATION OF A STEAM CHAMBERED MOLD HAVING A MATERIAL MOLDING CHAMBER THEREIN, A COVER FOR SAID MOLDING CHAMBER FORMING WITH SAID MOLDING CHAMBER A PRESSURE CHAMBER ABOVE AND COOPERATING WITH THE MOLDING CHAMBER, MEANS ASSOCIATED WITH SAID PRESSURE CHAMBER FOR ADMITTING FLUID UNDER PRESSURE INTO SAID PRESSURE CHAMBER TO IMPOSE FLUID PRESSURE ON AN EXPOSED SURFACE OF THE MOLDING MATERIAL IN SAID MOLDING CHAMBER AND FOR RELIEVING SAID FLUID PRESSURE, MEANS TO LOCK SAID MOLD AND COVER IN COOPERATIVE RELATIONSHIP, MEANS TO SUPPLY HEATING AND COOLING MEDIA ALTERNATELY TO SAID STEAM CHAMBERED MOLD AND MEANS OPERABLE TO FILL SAID MOLDING CHAMBER WITH SAID MATERIAL AND THEREAFTER EJECT THE FORMED PRODUCT THEREFROM.
Claim 2
Dependent Claim
126 words
IN A DEVICE FOR FORMING A REACTED AND INTEGRATED PRODUCT FROM A MOLDING MATERIAL THE COMBINATION OF A STEAM CHAMBERED MOLD HAVING A MATERIAL MOLDING CHAMBER THEREIN, A COVER FOR SAID MOLDING CHAMBER FORMING WITH SAID MOLDING CHAMBER A PRESSURE CHAMBER ABOVE AND COOPERATING WITH THE MOLDING CHAMBER, MEANS ASSOCIATED WITH SAID PRESSURE CHAMBER FOR ADMITTING FLUID UNDER PRESSURE INTO SAID PRESSURE CHAMBER TO IMPOSE FLUID PRESSURE ON AN EXPOSED SURFACE OF THE MOLDING MATERIAL IN SAID MOLDING CHAMBER AND FOR RELIEVING SAID FLUID PRESSURE, MEANS TO LOCK SAID MOLD AND COVER IN COOPERATIVE RELATIONSHIP, MEANS TO SUPPLY HEATING AND COOLING MEDIA ALTERNATELY TO SAID STEAM CHAMBERED MOLD AND MEANS OPERABLE TO FILL SAID MOLDING CHAMBER WITH SAID MATERIAL AND THEREAFTER EJECT THE FORMED PRODUCT THEREFROM.
References Cited (Backward Citations)
US476799A
Cited
US2432981A
Cited
US1409925A
Cited
US1665308A
Cited
US1808191A
Cited
US2085959A
Cited
US2442519A
Cited
US2540354A
Cited
US2495597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |