US2907074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a cellular lined plastic article
Assignee: Uniroyal Inc
•
Filing: 1953-07-22
•
Granted: 1959-10-06
•
Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:20
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/02; B29D35/04; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/1233; B29C33/00; B29C33/44; B29C33/48; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/258; B29L; B29L2031/00; B29L2031/48; B29L2031/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/3183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF MAKING A HEAT INSULATING HOLLOW ARTICLE COMPRISING THE STEPS OF APPLYING A LAYER OF UNCURED EXPANDABLE ORGANIC PLASTIC TO A PARTIALLY INFLATED EXPANDABLE FORM HAVING A SUPPORTING CORE THEREIN, APPLYING AN UNCURED NON-EXPANDABLE LAYER OF ORGANIC PLASTIC TO THE EXPANDABLE LAYER, CONFINING THE FORM WITH THE LAYERS BUILT UP THEREON IN A MOLD CAVITY, INCREASING THE PRESSURE IN THE PARTIALLY INFLATED FORM TO FORCE THE LAST APPLIED LAYER AGAINST THE WALLS OF THE MOLD CAVITY PARTIALLY CURING THE LAYERS OF ORGANIC PLASTIC WITHOUT GENERATING ANY SUBSTANTIAL AMOUNT OF GAS IN THE EXPANDABLE LAYER, CONTINUNING THE CURE OF SAID LAYERS AT AN ELEVATED TEMPERATURE, AND GENERATING GAS IN THE EXPANDABLE LAYER AND THEREBY EXPANDING SAID LAYER AND COLLAPSING SAID FORM AGAINST SAID CORE TO LIMIT THE EXPANSION OF SAID EXPANDABLE LAYER.
Claim 2
Independent Claim
133 words
THE METHOD OF MAKING A HEAT INSULATING HOLLOW ARTICLE COMPRISING THE STEPS OF APPLYING A LAYER OF UNCURED EXPANDABLE ORGANIC PLASTIC TO A PARTIALLY INFLATED EXPANDABLE FORM HAVING A SUPPORTING CORE THEREIN, APPLYING AN UNCURED NON-EXPANDABLE LAYER OF ORGANIC PLASTIC TO THE EXPANDABLE LAYER, CONFINING THE FORM WITH THE LAYERS BUILT UP THEREON IN A MOLD CAVITY, INCREASING THE PRESSURE IN THE PARTIALLY INFLATED FORM TO FORCE THE LAST APPLIED LAYER AGAINST THE WALLS OF THE MOLD CAVITY PARTIALLY CURING THE LAYERS OF ORGANIC PLASTIC WITHOUT GENERATING ANY SUBSTANTIAL AMOUNT OF GAS IN THE EXPANDABLE LAYER, CONTINUNING THE CURE OF SAID LAYERS AT AN ELEVATED TEMPERATURE, AND GENERATING GAS IN THE EXPANDABLE LAYER AND THEREBY EXPANDING SAID LAYER AND COLLAPSING SAID FORM AGAINST SAID CORE TO LIMIT THE EXPANSION OF SAID EXPANDABLE LAYER.
References Cited (Backward Citations)
US233385A
Cited
US878749A
Cited
US1722697A
Cited
US1758438A
Cited
US1924716A
Cited
US2299593A
Cited
US2247337A
Cited
US2202042A
Cited
US2297022A
Cited
US2287026A
Cited
US2394327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |