US3095259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow enclosed molded articles with molded internal wall surfaces
Assignee: Barnstead Still and Sterilizer Co
•
Filing: 1961-01-09
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Granted: 1963-06-25
•
Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Verity C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:05
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/18; Y; Y10; Y10S; Y10S425/00; Y10S425/059; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF MAKING SUBSTANTIALLY ENCLOSED HOLLOW SLUSH MOLDED ARTICLES HAVING AN INTERNAL MOLDED WALL SURFACE, COMPRISING FILLING COMPLEMENTARY MOLDS WITH A HEAT-HARDENABLE LIQUID RESINOUS MATERIAL, HEATING SAID RESINOUS MATERIAL AT THE SURFACE OF SAID MOLDS TO CAUSE A PORTION OF SAID RESINOUS MATERIAL IN CONTACT WITH THE INTERNAL SURFACES OF SAID MOLDS TO HARDEN, PARTIALLY DRAINING AT LEAST ONE OF SAID MOLDS AND LEAVING A RESERVOIR OF LIQUID RESINOUS MATERIAL THEREIN, PLACING AN INTERNAL MOLD IN SAID RESERVOIR, DRAINING ANY REMAINING ONES OF SAID MOLDS, HEATING SAID LIQUID RESINOUS MATERIAL IN SAID MOLDS TO CAUSE IT TO HARDEN, REMOVING THE HEAT-HARDENED RESINOUS MEMBERS SO FORMED FROM THE MOLDS, AND JOINING THE MEMBERS TO COMPLETE THE ARTICLE.
Claim 2
Independent Claim
117 words
A METHOD OF MAKING SUBSTANTIALLY ENCLOSED HOLLOW SLUSH MOLDED ARTICLES HAVING AN INTERNAL MOLDED WALL SURFACE, COMPRISING FILLING COMPLEMENTARY MOLDS WITH A HEAT-HARDENABLE LIQUID RESINOUS MATERIAL, HEATING SAID RESINOUS MATERIAL AT THE SURFACE OF SAID MOLDS TO CAUSE A PORTION OF SAID RESINOUS MATERIAL IN CONTACT WITH THE INTERNAL SURFACES OF SAID MOLDS TO HARDEN, PARTIALLY DRAINING AT LEAST ONE OF SAID MOLDS AND LEAVING A RESERVOIR OF LIQUID RESINOUS MATERIAL THEREIN, PLACING AN INTERNAL MOLD IN SAID RESERVOIR, DRAINING ANY REMAINING ONES OF SAID MOLDS, HEATING SAID LIQUID RESINOUS MATERIAL IN SAID MOLDS TO CAUSE IT TO HARDEN, REMOVING THE HEAT-HARDENED RESINOUS MEMBERS SO FORMED FROM THE MOLDS, AND JOINING THE MEMBERS TO COMPLETE THE ARTICLE.
References Cited (Backward Citations)
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Cited
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US2915788A
Cited
US2939180A
Cited
US2808967A
Cited
US2908943A
Cited
US3035309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |