US3606623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bedrest with improved bellows structure
Assignee: Surgical Dynamics Inc
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Filing: 1970-01-09
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Granted: 1971-09-21
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Expires: 1990-01-09
Abstract
Abstract A BELLOWS ASSEMBLY FOR A PNEUMATICALLY OPERATED ADJUSTABLE BEDREST IS PROVIDED WITH INTEGRAL CHANNEL MEANS WHEREBY PRESSURIZED AIR IS INTRODUCED INTO WHAT WILL ULTIMATELY BE THE WIDER END OF THE INFLATED BELLOWS AND IS THEN CHANNELLED DOWN INTO THE OPPOSED END OR APEX OF THE V-SHAPED BELLOWS. FROM THE APEX THE PRESSURIZED AIR IS THEN FREE TO MOVE INTO THE SEPARATE CHAMBERS DEFINED BY THE CHANNELS AND THE ADJACENT CONFRONTING LAYERS OF THE BELLOWS. THIS PROVIDES A MECHANICAL ADVANTAGE WHICH PERMITS SMOOTH ELEVATING ACTION.
Inventors
- 👤 Julian Robert Aymar
- 👤 Michael R Aymar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
A; A47; A47C; A47C20/00; A47C20/04; A47C20/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |