Patent US3148391A successfully refreshed from Google Patents.
US3148391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support device
Assignee: Individual
•
Filing: 1961-11-24
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Granted: 1964-09-15
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 John K Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05769; A61G7/05776; Y; Y10; Y10S; Y10S297/00; Y10S297/03; Y10S5/00; Y10S5/932
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CYCLING DIFFERENTIAL BODY PRESSURE AREA SUPPORT DEVICE COMPRISING A BODY SUPPORT PAD HAVING AT LEAST A FIRST EXPANDABLE CELL OF A GIVEN EXPANDED SIZE AND A SPACED SECOND EXPANDABLE CELL HAVING A LARGER EXPANDED SIZE, SAID CELLS BEING SEALED FROM ONE ANOTHER, A FLUID PRESSURE COMPRESSOR CONNECTED TO SAID FIRST CELL TO MAINTAIN CONTINUOUS PRESSURE THEREIN, A VALVE INTERCONNECTING SAID SECOND CELL AND THE COMPRESSOR FORMED TO OPERATE BETWEEN A CLOSED POSITION WHEREAT SAID COMPRESSOR IS COUPLED TO THE SECOND CELL AND AN EXHAUSE POSISITON WHEREAT THE SECOND CELL IS COUPLED OT THE ATMOSPHERE, AND A TIMING DEVICE COUPLED TO SAID VALVE TO PROVIDE OPERATION THEREOF FOR CYCLIC PRESSURIZING AND EXHAUSTING IF SAID SECOND CELL TO CHANGE THE PRIMARY BODY SUPPORT PRESSURE AREAS BETWEEN SAID SECOND EXPANDED CELL AND SAID FIRST EXPANDED CELL.
Claim 2
Dependent Claim
134 words
A CYCLING DIFFERENTIAL BODY PRESSURE AREA SUPPORT DEVICE COMPRISING A BODY SUPPORT PAD HAVING AT LEAST A FIRST EXPANDABLE CELL OF A GIVEN EXPANDED SIZE AND A SPACED SECOND EXPANDABLE CELL HAVING A LARGER EXPANDED SIZE, SAID CELLS BEING SEALED FROM ONE ANOTHER, A FLUID PRESSURE COMPRESSOR CONNECTED TO SAID FIRST CELL TO MAINTAIN CONTINUOUS PRESSURE THEREIN, A VALVE INTERCONNECTING SAID SECOND CELL AND THE COMPRESSOR FORMED TO OPERATE BETWEEN A CLOSED POSITION WHEREAT SAID COMPRESSOR IS COUPLED TO THE SECOND CELL AND AN EXHAUSE POSISITON WHEREAT THE SECOND CELL IS COUPLED OT THE ATMOSPHERE, AND A TIMING DEVICE COUPLED TO SAID VALVE TO PROVIDE OPERATION THEREOF FOR CYCLIC PRESSURIZING AND EXHAUSTING IF SAID SECOND CELL TO CHANGE THE PRIMARY BODY SUPPORT PRESSURE AREAS BETWEEN SAID SECOND EXPANDED CELL AND SAID FIRST EXPANDED CELL.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |