US3613166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compaction of particulate matter
Assignee: Dresser Industries Inc
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Filing: 1969-06-26
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Granted: 1971-10-19
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Expires: 1989-06-26
Abstract
Abstract AN APPARATUS AND METHOD FOR COMPRESSING PARTICULATE MATERIAL USING AT LEAST ONE DIE IN A MOLD WHEREIN AT LEAST ONE ACTUATOR IS EMPLOYED FOR FORCING THE DIE TOWARD AND AWAY FROM THE MOLD AND AT LEAST ONE SERVO VALVE IS EMPLOYED FOR CONTROLLING THE ACTUATOR SO AS TO APPLY THE DIE BOTH STATIC AND DYNAMIC FORCES.
Inventors
- 👤 Richard W Wallace
- 👤 Stanley R Pavlica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:40
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/022; B28; B28B; B28B3/00; B28B3/02; B28B3/022; Y; Y10; Y10S; Y10S425/00; Y10S425/002
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |