US3671143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat side valve for pressure balanced power steering pump with improved aspirator action
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1970-11-05
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Granted: 1972-06-20
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Expires: 1990-11-05
Abstract
Abstract PUMP BYPASS IS CHANNELED INTO AN ANNULUS AND THENSE INTO A SINGLE FLOW PASSAGE CONSTRUCTED TO OBTAIN MAXIMUM ASPIATION AT AN OIL MAKEUP PORT SO AS TO OBTAIN MAXIMUM INLET SUPERCHARGE.
Inventors
- 👤 Hubert M Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/06; B; B62; B62D; B62D5/00; B62D5/06; B62D5/062; F04C14/00; F04C14/24; F04C14/26; F04C15/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |