US3156958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry molding machine
Assignee: —
•
Filing: —
•
Granted: 1964-11-17
•
Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:09
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/10; B22C15/12; Y; Y10; Y10S; Y10S425/00; Y10S425/019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SQUEEZE HEAD FOR FOUNDRY MOLDING MACHINES AND THE LIKE COMPRISING A DOWNWARDLY OPENING CAVITY, A DIAPHRAGM PERIPHERALLY SECURED TO SAID CAVITY EXTENDING ACROSS THE BOTTOM THEREOF, A CHAMBER IN SAID CAVITY HAVING A FLEXIBLE WALL VIS-A-VIS SAID DIAPHRAGM, A COMPRESSIBLE FLUID SEALED IN SAID CAVITY BETWEEN SAID DIAPHRAGM AND SAID FLEXIBLE WALL, AND A SUBSTANTIALLY INCOMPRESSIBLE FLUID SEALED IN SAID CHAMBER.
Claim 2
Dependent Claim
62 words
A SQUEEZE HEAD FOR FOUNDRY MOLDING MACHINES AND THE LIKE COMPRISING A DOWNWARDLY OPENING CAVITY, A DIAPHRAGM PERIPHERALLY SECURED TO SAID CAVITY EXTENDING ACROSS THE BOTTOM THEREOF, A CHAMBER IN SAID CAVITY HAVING A FLEXIBLE WALL VIS-A-VIS SAID DIAPHRAGM, A COMPRESSIBLE FLUID SEALED IN SAID CAVITY BETWEEN SAID DIAPHRAGM AND SAID FLEXIBLE WALL, AND A SUBSTANTIALLY INCOMPRESSIBLE FLUID SEALED IN SAID CHAMBER.
References Cited (Backward Citations)
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Cited
US2854712A
Cited
US2857636A
Cited
US2962775A
Cited
US2835004A
Cited
US3041685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |