US3233689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure motive systems, primarily for borehole drilling
Assignee: Individual
•
Filing: 1962-11-29
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Granted: 1966-02-08
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Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Whittle Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:06
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; E; E21; E21B; E21B4/00; E21B4/02; E21B44/00; E21B44/005; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/40515; F15B2211/42; F15B2211/428; F15B2211/60; F15B2211/605; F15B2211/6051; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/76; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
136 words
A FLUID PRESSURE MOTIVE SYSTEM COMPISING FRIST CONDUIT MEANS, SECOND CONDUIT MEANS COMMUNICATING WITH THE FIRST CONDUIT MEANS THROUGH A FIRST ORIFICE, AND THIRD CONDUIT MEANS COMMUNICATING WITH THE SECOND CONDUIT MEANS THROUGH A SECOND ORIFICE; A MOTIVE PISTON HAVING FACES EXPOSED RESPECTIVELY TO THE INTERIORS OF THE SECOND AND THIRD CONDUIT MEANS; AUXILIARY PRESSURE-RESPONSIVE MEANS HAVING FACES EXPOSED RESPECTIVELY TO THE INTERIORS OF THE FIRST, SECOND, AND THIRD CONDUIT MEANS; MOVABLE VALVE MEANS FOR RESTRICTING THE SECOND ORIFICE TO A VARIABLE EXTENT; AND MEANS LINKING THE AUXILIARY PRESSURE-RESPONSIVE MEANS TO THE VALVE MEANS TO CAUSE THE VALVE MEANS TO REDUCE THE AREA OF THE SECOND ORIFICE UPON MOVEMENT OF THE AUXILIARY PRESSURE-RESPONSIVE MEANS CONSEQUENT ON A CHANGE OF THE PRESSURE IN THE SECOND CONDUIT MEANS TOWARDS EQUALITY WITH THE PRESSURE IN THE THIRD CONDUIT MEANS.
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |