US3249964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing dense articles from powdered carbon and other materials
Assignee: Stackpole Carbon Co
•
Filing: 1963-09-09
•
Granted: 1966-05-10
•
Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Amos J Shaler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:51
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/326; B; B22; B22F; B22F3/00; B22F3/12; B22F3/1208; B22F3/14; B22F3/15; B29; B29C; B29C43/00; B29C43/32; Y; Y10; Y10S; Y10S425/00; Y10S425/019; Y10S425/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
COMPRESSING APPARATUS FOR PRODUCING DENSE ARTICLES MOLDED FROM POWDERED MATERIALS, COMPRISING A CLOSED COMPRESSIBLE METAL CAN, A RIGID CONTAINER SURROUNDING THE CAN AND SPACED THEREFROM , AND A POROUS BODY OF THERMALLY EXPANSIBLE GRANULAR MATERIAL FILLING THE SPACE BETWEEN THE CONTAINER AND CAN AND HAVING A COFFICIENT OF EXPANSION MUCH GREATER THAN THAT OF THE CONTAINER AND CAPABLE DURING EXPANSION OF COMPRESSING THE CAN, WHEREBY WHEN THE APPARATUS IS HEATED TO BAKE A MOLDED POWDERED ARTICLE FITTING IN THE CAN SAID POROUS BODY WILL EXPAND INWARDLY TO CONTRACT ON THE CAN TO COMPRESS IT AGAINST SAID ARTICLE TO COMPRESS THE ARTICLE.
Claim 2
Dependent Claim
101 words
COMPRESSING APPARATUS FOR PRODUCING DENSE ARTICLES MOLDED FROM POWDERED MATERIALS, COMPRISING A CLOSED COMPRESSIBLE METAL CAN, A RIGID CONTAINER SURROUNDING THE CAN AND SPACED THEREFROM , AND A POROUS BODY OF THERMALLY EXPANSIBLE GRANULAR MATERIAL FILLING THE SPACE BETWEEN THE CONTAINER AND CAN AND HAVING A COFFICIENT OF EXPANSION MUCH GREATER THAN THAT OF THE CONTAINER AND CAPABLE DURING EXPANSION OF COMPRESSING THE CAN, WHEREBY WHEN THE APPARATUS IS HEATED TO BAKE A MOLDED POWDERED ARTICLE FITTING IN THE CAN SAID POROUS BODY WILL EXPAND INWARDLY TO CONTRACT ON THE CAN TO COMPRESS IT AGAINST SAID ARTICLE TO COMPRESS THE ARTICLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |