US2798253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus
Assignee: Uniroyal Inc
•
Filing: 1954-08-03
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Granted: 1957-07-09
•
Expires: 1974-08-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:10
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/04; B29C45/0441; B29C43/00; B29C43/22; B29C45/0433; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/25; B29C48/30; B29C48/303; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; B29C48/9175; B29C48/94; B29D; B29D35/00; B29D35/0009; B29D35/0054; B29D35/12; B29D35/122; B29K; B29K2021/00; B29L; B29L2009/00; B29L2030/00; B29L2030/002; B29L2031/00; B29L2031/48; B29L2031/50; B29L2031/726; Y; Y10; Y10S; Y10S425/00; Y10S425/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN APPARATUS FOR FORMING A CONTINUOUS LENGTH OF RAW VULCANIZABLE RUBBER STOCK HAVING ELASTIC MEMORY IN A DEFINITE DESIRED CROSS-SECTIONAL SIZE AND SHAPE, COMPRISING AN EXTRUDER FOR ADVANCING THE RAW RUBBER STOCK CONTINUOUSLY UNDER PRESSURE, AN EXTRUSION HEAD MOUNTED ON THE DELIVERY END OF SAID EXTRUDER, A STATIONARY ARCUATE CONFINING SHIELD EXTENDING FROM SAID EXTENSION HEAD, A ROTARY DRUM MOUNTED IN ENGAGEMENT WITH AND CONCENTRICALLY WITH SAID STATIONARY CONFINING SHIELD, THE DRUM AND SHIELD DEFINING BETWEEN THEM AN ELONGATED, ARCUATE, CONTINUOUS CAVITY FOR THE RAW RUBBER STOCK, SAID CAVITY HAVING THROUGHOUT ITS LENGTH THE SAID DEFINITE DESIRED CROSS-
Claim 2
Independent Claim
98 words
AN APPARATUS FOR FORMING A CONTINUOUS LENGTH OF RAW VULCANIZABLE RUBBER STOCK HAVING ELASTIC MEMORY IN A DEFINITE DESIRED CROSS-SECTIONAL SIZE AND SHAPE, COMPRISING AN EXTRUDER FOR ADVANCING THE RAW RUBBER STOCK CONTINUOUSLY UNDER PRESSURE, AN EXTRUSION HEAD MOUNTED ON THE DELIVERY END OF SAID EXTRUDER, A STATIONARY ARCUATE CONFINING SHIELD EXTENDING FROM SAID EXTENSION HEAD, A ROTARY DRUM MOUNTED IN ENGAGEMENT WITH AND CONCENTRICALLY WITH SAID STATIONARY CONFINING SHIELD, THE DRUM AND SHIELD DEFINING BETWEEN THEM AN ELONGATED, ARCUATE, CONTINUOUS CAVITY FOR THE RAW RUBBER STOCK, SAID CAVITY HAVING THROUGHOUT ITS LENGTH THE SAID DEFINITE DESIRED CROSS-
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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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |