US3156012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum molding machine
Assignee: Individual
•
Filing: 1962-02-27
•
Granted: 1964-11-10
•
Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hritz Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:58
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/10; B29C51/002; Y; Y10; Y10S; Y10S425/00; Y10S425/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A VACUUM MOLDING MACHINE COMPRISING A VACUUM BOX, A PERFORATED PATTERN IN SUCH VACUUM BOX, A HEATING MEANS HORIZONTALLY SPACED FROM SUCH VACUUM BOX, FRAME CLAMPING MEANS FOR CLAMPING A SHEET OF THERMOPLASTIC MATERIAL, SAID FRAME CLAMPING MEANS BEING MOUNTED ON A PIVOT BRACKET BETWEEN SAID HEATING MEANS AND SAID VACUUM BOX FOR SWINGING SAID FRAME CLAMPING MEANS AND THUS SAID SHEET OF THERMOPLASTIC MATERIAL ABOUT A HORIZONTAL AXIS FROM A POSITION ADJACENT SAID HEATING MEANS TO A POSITION ADJACENT SAID VACUUM BOX AND IN PERIPHERAL SEALING ENGAGEMENT THEREWITH, A CLOSED VARIABLE VOLUME VACUUM CHAMBER IN FLUID COMMUNICATION WITH SAID PERFORATED PATTERN, MEANS TO ENLARGE THE VOLUME OF SAID VACUUM CHAMBER TO CREATE A LESS THAN ATMOSPHERIC PRESSURE BETWEEN SAID SHEET AND PATTERN TO CAUSE SUCH SHEET TO CONFORM TO SUCH PATTERN, AND MEANS TO REDUCE SAID VACUUM CHAMBER TO LESS THAN ITS ORIGINAL SIZE TO CREATE A GREATER THAN ATMOSPHERIC PRESSURE TO EXPEL SAID SHEET FROM SAID PATTERN.
Claim 2
Dependent Claim
159 words
A VACUUM MOLDING MACHINE COMPRISING A VACUUM BOX, A PERFORATED PATTERN IN SUCH VACUUM BOX, A HEATING MEANS HORIZONTALLY SPACED FROM SUCH VACUUM BOX, FRAME CLAMPING MEANS FOR CLAMPING A SHEET OF THERMOPLASTIC MATERIAL, SAID FRAME CLAMPING MEANS BEING MOUNTED ON A PIVOT BRACKET BETWEEN SAID HEATING MEANS AND SAID VACUUM BOX FOR SWINGING SAID FRAME CLAMPING MEANS AND THUS SAID SHEET OF THERMOPLASTIC MATERIAL ABOUT A HORIZONTAL AXIS FROM A POSITION ADJACENT SAID HEATING MEANS TO A POSITION ADJACENT SAID VACUUM BOX AND IN PERIPHERAL SEALING ENGAGEMENT THEREWITH, A CLOSED VARIABLE VOLUME VACUUM CHAMBER IN FLUID COMMUNICATION WITH SAID PERFORATED PATTERN, MEANS TO ENLARGE THE VOLUME OF SAID VACUUM CHAMBER TO CREATE A LESS THAN ATMOSPHERIC PRESSURE BETWEEN SAID SHEET AND PATTERN TO CAUSE SUCH SHEET TO CONFORM TO SUCH PATTERN, AND MEANS TO REDUCE SAID VACUUM CHAMBER TO LESS THAN ITS ORIGINAL SIZE TO CREATE A GREATER THAN ATMOSPHERIC PRESSURE TO EXPEL SAID SHEET FROM SAID PATTERN.
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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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |