Patent US3077176A successfully refreshed from Google Patents.
US3077176A
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Magnetic pressure-responsive devices
Assignee: Pall Corp
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Filing: 1961-04-06
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Granted: 1963-02-12
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Expires: 1981-04-06
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
- 👤 Mathias P L Siebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; H; H01; H01B; H01B3/00; H01B3/02; H01B3/10; H01B3/105; H01H; H01H35/00; H01H35/24; H01H35/34; H01H36/00; H01H36/0073; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PRESSURE-RESPONSIVE DEVICE COMPRISING A HOUSING, A FLEXIBLE MAGNETIC DIAPHRAGM ASSEMBLY MOVABLY MOUNTED IN THE HOUSING, TOWARD AND AWAY FROM A FIRST POSITION, BIAS MEANS URGING THE DIAPHRAGM ASSEMBLY IN ONE DIRECTION AND NORMALLY RETAINING THE SAME IN THE FIRST POSITION, FLUID DUCT MEANS COMMUNICATING WITH A SOURCE OF FLUID UNDER PRESSURE AND WITH ONE FACE OF THE DIAPHRAGM ASSEMBLY TO URGE IT IN THE OPPOSITE DIRECTION, MAGNETIC MEANS MOVABLE TOWARD AND AWAY FROM THE MAGNETIC DIAPHRAGM ASSEMBLY AND NORMALLY RETAINED TOWARD THE ASSEMBLY BY MAGNETIC ATTRACTION WHEN THE ASSEMBLY IS IN THE FIRST POSITION, AND BIAS MEANS URGING THE MAGNETIC MEANS AWAY FROM THE ASSEMBLY SELECTED TO OVERCOME THE FORCE OF THE MAGNETIC MEANS WHEN THE ASSEMBLY MEANS IS MORE THAN A PREDETERMINED DISTANCE AWAY THEREFROM.
Claim 2
Dependent Claim
127 words
A PRESSURE-RESPONSIVE DEVICE COMPRISING A HOUSING, A FLEXIBLE MAGNETIC DIAPHRAGM ASSEMBLY MOVABLY MOUNTED IN THE HOUSING, TOWARD AND AWAY FROM A FIRST POSITION, BIAS MEANS URGING THE DIAPHRAGM ASSEMBLY IN ONE DIRECTION AND NORMALLY RETAINING THE SAME IN THE FIRST POSITION, FLUID DUCT MEANS COMMUNICATING WITH A SOURCE OF FLUID UNDER PRESSURE AND WITH ONE FACE OF THE DIAPHRAGM ASSEMBLY TO URGE IT IN THE OPPOSITE DIRECTION, MAGNETIC MEANS MOVABLE TOWARD AND AWAY FROM THE MAGNETIC DIAPHRAGM ASSEMBLY AND NORMALLY RETAINED TOWARD THE ASSEMBLY BY MAGNETIC ATTRACTION WHEN THE ASSEMBLY IS IN THE FIRST POSITION, AND BIAS MEANS URGING THE MAGNETIC MEANS AWAY FROM THE ASSEMBLY SELECTED TO OVERCOME THE FORCE OF THE MAGNETIC MEANS WHEN THE ASSEMBLY MEANS IS MORE THAN A PREDETERMINED DISTANCE AWAY THEREFROM.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |