US3183993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control system
Assignee: Motors Liquidation Co
•
Filing: 1961-06-07
•
Granted: 1965-05-18
•
Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 Leland C Parker
- 👤 Donald D Stoltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:22
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A DYNAMIC FLUID PRESSURE SYSTEM HAVING A FIRST FLUID PRESSURE SOURCE FOR PRODUCING A FIRST VARIABLE PRESSURE AND A SECOND FLUID PRESSURE SOURCE FOR PRODUCING A SECOND PRESSURE GREATER THAN SAID FIRST PRESSURE, FLUID PRESSURE MODIFICATION MECHANISM COMPRISING A CHAMBER, FIRST MEANS METERING SAID FIRST PRESSURE INTO SAID CHAMBER IN INVERSE RELATION TO VARIATIONS IN SAID FIRST PRESSURE, SECOND
Claim 2
Dependent Claim
60 words
IN A DYNAMIC FLUID PRESSURE SYSTEM HAVING A FIRST FLUID PRESSURE SOURCE FOR PRODUCING A FIRST VARIABLE PRESSURE AND A SECOND FLUID PRESSURE SOURCE FOR PRODUCING A SECOND PRESSURE GREATER THAN SAID FIRST PRESSURE, FLUID PRESSURE MODIFICATION MECHANISM COMPRISING A CHAMBER, FIRST MEANS METERING SAID FIRST PRESSURE INTO SAID CHAMBER IN INVERSE RELATION TO VARIATIONS IN SAID FIRST PRESSURE, SECOND
References Cited (Backward Citations)
US2115878A
Cited
US2324191A
Cited
US2368822A
Cited
US2708979A
Cited
US2737165A
Cited
US2731025A
Cited
US2835237A
Cited
US2921641A
Cited
US2880706A
Cited
US2966224A
Cited
US2990875A
Cited
US3068849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |