US3285282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve for fluid motors and the like
Assignee: Parker Hannifin Corp
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Filing: 1964-10-22
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Granted: 1966-11-15
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Expires: 1984-10-22
Abstract
No abstract record available.
Inventors
- 👤 George J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:11
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/20; B66F9/22; F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/044; F15B13/00; F15B13/01; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/40; F15B2211/405; F15B2211/40553; F15B2211/46; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/75; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792; Y10T137/8593; Y10T137/87169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A FLOW CONTROL VALVE COMPRISING A HOUSING HAVING A PASSAGE THERETHROUGH, A FLOW CONTROL SLEEVE MEANS HAVING AN APERTURE THROUGH THE WALL THEREOF DISPOSED IN SAID HOUSING FOR MOVEMENT IN ONE DIRECTION FROM A POSITION WHEREAT SAID APERTURE IS IN DIRECT OPEN ALIGNMENT WITH SAID PASSAGE TO EFFECT A PROGRESSIVE CLOSING OF SAID APERTURE AS SAID APERTURE IS MOVED OUT OF ALIGNMENT WITH SAID PASSAGE, MEANS WITHIN SAID HOUSING DEFINING A CHAMBER HAVING RESTRICTED FLUID COMMUNICATION WITH FLUID PRESSURE UPSTREAM OF SAID APERTURE, A FLUID PRESSURE ACTUATED PLUNGER IN SAID HOUSING HAVING ITS RESPECTIVE ENDS EXPOSED TO FLUID PRESSURE DOWNSTREAM OF SAID APERTURE VIA A BRANCH PASSAGE LEADING TO ONE END OF SAID PLUNGER SAID FLUID PRESSURE IN SAID CHAMBER, AND SPRING MEANS BIASING SAID PLUNGER AND SLEEVE MEANS IN A DIRECTION MAINTAINING SAID APERTURE IN SUCH DIRECT OPEN ALIGNMENT WITH SAID PASSAGE, SAID CHAMBER CONSTITUTING A CUSHIONING CHAMBER TO RESIST SUDDEN CHANGES IN FLUID PRESSURE THEREIN.
Claim 2
Dependent Claim
157 words
A FLOW CONTROL VALVE COMPRISING A HOUSING HAVING A PASSAGE THERETHROUGH, A FLOW CONTROL SLEEVE MEANS HAVING AN APERTURE THROUGH THE WALL THEREOF DISPOSED IN SAID HOUSING FOR MOVEMENT IN ONE DIRECTION FROM A POSITION WHEREAT SAID APERTURE IS IN DIRECT OPEN ALIGNMENT WITH SAID PASSAGE TO EFFECT A PROGRESSIVE CLOSING OF SAID APERTURE AS SAID APERTURE IS MOVED OUT OF ALIGNMENT WITH SAID PASSAGE, MEANS WITHIN SAID HOUSING DEFINING A CHAMBER HAVING RESTRICTED FLUID COMMUNICATION WITH FLUID PRESSURE UPSTREAM OF SAID APERTURE, A FLUID PRESSURE ACTUATED PLUNGER IN SAID HOUSING HAVING ITS RESPECTIVE ENDS EXPOSED TO FLUID PRESSURE DOWNSTREAM OF SAID APERTURE VIA A BRANCH PASSAGE LEADING TO ONE END OF SAID PLUNGER SAID FLUID PRESSURE IN SAID CHAMBER, AND SPRING MEANS BIASING SAID PLUNGER AND SLEEVE MEANS IN A DIRECTION MAINTAINING SAID APERTURE IN SUCH DIRECT OPEN ALIGNMENT WITH SAID PASSAGE, SAID CHAMBER CONSTITUTING A CUSHIONING CHAMBER TO RESIST SUDDEN CHANGES IN FLUID PRESSURE THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |