Patent US3577977A successfully refreshed from Google Patents.
US3577977A
Expired / Lapsed
US
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Cardiovascular conditioning device and portable respirator
Assignee: Henry B Whitmore Paul M Stevens
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Filing: 1968-11-13
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Granted: 1971-05-11
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Expires: 1988-11-13
Abstract
Abstract A positive pressure vest and helmet assembly is pressurized by introducing gases thereinto to produce pooling of blood in the subject''s extremities causing the vascular muscles to exercise in order to compensate for conditions resulting from body changes which occur under zero gravity conditions.
Inventors
- 👤 Frederick R Ritzinger Jr
- 👤 Henry B Whitmore
- 👤 Paul M Stevens
- 👤 Gerald Garnder
- 👤 Leonard Harris
- 👤 Arnott A Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:19
CPC Classifications
B; B64; B64D; B64D10/00; B64G; B64G6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A cardiovascular conditioning device for use under zero gravity conditions, said device comprising an inflatable jacket which permits normal breathing function while providing controllable pressures about the upper body of the wearer, said inflatable jacket having free sleeve portions and being adjustable to fit the body of the wearer, a restricting jacket adjustable over said inflatable jacket to retain said inflatable jacket in position, a helmet adapted to be positioned over the head of the wearer for sustaining variable pressures thereon, sealing means between said helmet and said inflatable jacket, a body harness adjustable about the body of the wearer for maintaining said helmet in position over the head of the wearer, and a controlled pressure source for inflating said inflatable jacket and pressurizing said helmet and amount sufficient to provide a constant pressure differential between the head and torso areas and the other body portions, thereby compensating for body changes occurring under zero gravity conditions by requiring increased cardiovascular activity which maintains the heart and vascular muscles in tone during relatively long periods of space flight under zero gravity conditions.
Claim 2
Dependent Claim
181 words
A cardiovascular conditioning device for use under zero gravity conditions, said device comprising an inflatable jacket which permits normal breathing function while providing controllable pressures about the upper body of the wearer, said inflatable jacket having free sleeve portions and being adjustable to fit the body of the wearer, a restricting jacket adjustable over said inflatable jacket to retain said inflatable jacket in position, a helmet adapted to be positioned over the head of the wearer for sustaining variable pressures thereon, sealing means between said helmet and said inflatable jacket, a body harness adjustable about the body of the wearer for maintaining said helmet in position over the head of the wearer, and a controlled pressure source for inflating said inflatable jacket and pressurizing said helmet and amount sufficient to provide a constant pressure differential between the head and torso areas and the other body portions, thereby compensating for body changes occurring under zero gravity conditions by requiring increased cardiovascular activity which maintains the heart and vascular muscles in tone during relatively long periods of space flight under zero gravity conditions.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |