US3140690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic pressure indicator
Assignee: Pall Corp
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Filing: 1963-12-04
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Granted: 1964-07-14
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Mathias P L Siebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/38; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; G; G01; G01L; G01L19/00; G01L19/08; G01L19/12; H01H36/00; H01H36/0073; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A PRESSURE INDICATING DEVICE COMPRISING A HOUSING, FIRST MAGNETIC MEANS MOVABLE TOWARDS AND AWAY FROM A FIRST POSITION, FIRST BIAS MEANS URGING THE FIRST MAGNETIC MEANS TOWARDS AND NORMALLY RETAINING THE FIRST MAGNETIC MEANS IN THE FIRST POSITION, FLUID DUCT MEANS COMMUNICATING WITH A SOURCE OF FLUID UNDER PRESSURE AND WITH ONE END OF THE MAGNETIC MEANS TO URGE IT AWAY FROM THE FIRST POSITION, SECOND MAGNETIC MEANS MOVABLE TOWARDS AND AWAY FROM THE FIRST MAGNETIC MEANS BETWEEN FIRST AND SECOND POSITIONS, RESPECTIVELY, AND NORMALLY RETAINED TOWARDS THE FIRST MAGNETIC MEANS BY MAGNETIC ATTRACTION WHEN THE FIRST MAGNETIC MEANS IS IN THE FIRST POSITION, SECOND BIAS MEANS URGING THE SECOND MAGNETIC MEANS AWAY FROM THE FIRST MAGNETIC MEANS SELECTED TO OVERCOME THE FORCES OF MAGNETIC ATTRACTION WHEN THE FIRST MAGNETIC MEANS IS MORE THAN A PREDETERMINED DISTANCE AWAY FROM THE SECOND MAGNETIC MEANS, AND THIRD MAGNETIC MEANS RETAINING THE SECOND MAGNETIC MEANS AT ONE OF ITS SAID POSITIONS.
Claim 2
Dependent Claim
158 words
A PRESSURE INDICATING DEVICE COMPRISING A HOUSING, FIRST MAGNETIC MEANS MOVABLE TOWARDS AND AWAY FROM A FIRST POSITION, FIRST BIAS MEANS URGING THE FIRST MAGNETIC MEANS TOWARDS AND NORMALLY RETAINING THE FIRST MAGNETIC MEANS IN THE FIRST POSITION, FLUID DUCT MEANS COMMUNICATING WITH A SOURCE OF FLUID UNDER PRESSURE AND WITH ONE END OF THE MAGNETIC MEANS TO URGE IT AWAY FROM THE FIRST POSITION, SECOND MAGNETIC MEANS MOVABLE TOWARDS AND AWAY FROM THE FIRST MAGNETIC MEANS BETWEEN FIRST AND SECOND POSITIONS, RESPECTIVELY, AND NORMALLY RETAINED TOWARDS THE FIRST MAGNETIC MEANS BY MAGNETIC ATTRACTION WHEN THE FIRST MAGNETIC MEANS IS IN THE FIRST POSITION, SECOND BIAS MEANS URGING THE SECOND MAGNETIC MEANS AWAY FROM THE FIRST MAGNETIC MEANS SELECTED TO OVERCOME THE FORCES OF MAGNETIC ATTRACTION WHEN THE FIRST MAGNETIC MEANS IS MORE THAN A PREDETERMINED DISTANCE AWAY FROM THE SECOND MAGNETIC MEANS, AND THIRD MAGNETIC MEANS RETAINING THE SECOND MAGNETIC MEANS AT ONE OF ITS SAID POSITIONS.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |