US3195571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple spool valve assembly
Assignee: Parker Hannifin Corp
•
Filing: 1961-09-18
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Granted: 1965-07-20
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert B Olsavsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:28
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671; Y10T137/87169; Y10T137/87177
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN COMBINATION, SUCCESSIVE SPOOL VALVE ASSEMBLIES EACH COMPRISING A HOUSING HAVING INLET AND OUTLET PORTS, A MOTOR PORT, A BYPASS, AND AT LEAST ONE SPOOL BORE INTERSECTED AXIALLY THEREALONG BY SAID PORTS AND BYPASS; ONE HOUSING HAVING A TUBULAR CARRY-OVER FITTING SECURED THEREIN EFFECTIVE TO BLOCK FLUID COMMUNICATION BETWEEN THE BYPASS AND THE OUTLET PORT THEREOF AND TO ESTABLISH FLUID COMMUNICATION BETWEEN THE BYPASS THEREOF AND THE INLET PORT OF A SUCCEEDING HOUSING; THE BYPASS OF SAID SUCCEEDING HOUSING HAVING FLUID COMMUNICATION WITH THE OUTLET PORT THEREOF; A SPOOL MOVABLE IN EACH SPOOL BORE FROM A
Claim 2
Dependent Claim
96 words
IN COMBINATION, SUCCESSIVE SPOOL VALVE ASSEMBLIES EACH COMPRISING A HOUSING HAVING INLET AND OUTLET PORTS, A MOTOR PORT, A BYPASS, AND AT LEAST ONE SPOOL BORE INTERSECTED AXIALLY THEREALONG BY SAID PORTS AND BYPASS; ONE HOUSING HAVING A TUBULAR CARRY-OVER FITTING SECURED THEREIN EFFECTIVE TO BLOCK FLUID COMMUNICATION BETWEEN THE BYPASS AND THE OUTLET PORT THEREOF AND TO ESTABLISH FLUID COMMUNICATION BETWEEN THE BYPASS THEREOF AND THE INLET PORT OF A SUCCEEDING HOUSING; THE BYPASS OF SAID SUCCEEDING HOUSING HAVING FLUID COMMUNICATION WITH THE OUTLET PORT THEREOF; A SPOOL MOVABLE IN EACH SPOOL BORE FROM A
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |