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US4552133A Expired / Lapsed US ⏱️ 0.0 years remaining

Rapid exhaust valve for use in blood circulation stimulator

Assignee: Kawaei Co Ltd
•
Filing: 1984-08-08
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Granted: 1985-11-12
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Expires: 2004-08-08
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Abstract

Abstract A rapid exhaust valve for use in a blood circulation stimulator which supplies and exhausts an air to and from an air bag provided on the human body, thereby subjecting to repeated pressure application and release. A valve box, which is provided with an exhaust port on the circumferential wall thereof, is provided with a flexible band valve diaphragm therein. If a compressed air is supplied into said valve box through a compressed-air supply pipe, said valve diaphragm is pushed by the pressure to close said exhaust port and a part of said valve diaphragm is projected into an air bag from an opening communicating with said air bag to allow the compressed air flow into said air bag. When the pressure in said air bag reaches high, said flexible valve diaphragm is deformed so that it may close said compressed-air supply pipe to release said exhaust port whereby rapidly discharging the compressed air out of said air bag.

Inventors

  • 👤 Mamoru Kawaguchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 10:30
CPC Classifications
A; A61; A61H; A61H23/00; A61H23/04; A61H9/00; A61H9/005; A61H9/0078; A61H7/00; F; F16; F16K; F16K7/00; F16K7/12; F16K7/14; F16K7/17; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 170 words
A rapid exhaust valve for use in a blood circulation stimulator, in which the human body is subjected to repeated application and release of external pressure by means of an air bag and the like, characterized by that it comprises a valve box mounted so as to be communicated with said air bag and a flexible band valve diaphragm incorporated in said valve box, said valve box being connected with a compressed-air supply pipe and provided with an exhaust port at one portion of a circumferential wall thereof, said flexible valve diaphragm having almost the same width as the internal width of said valve box, one end of said flexible valve diaphragm being fixed between said compressed-air supply pipe and said exhaust port inside said valve box while another end of said flexible valve diaphragm being fixed between said compressed-air supply pipe and said air bag, and a reflected portion having a length of such a degree of projecting from said valve box into the inside of said air bag.
Claim 2
Dependent Claim 170 words
A rapid exhaust valve for use in a blood circulation stimulator, in which the human body is subjected to repeated application and release of external pressure by means of an air bag and the like, characterized by that it comprises a valve box mounted so as to be communicated with said air bag and a flexible band valve diaphragm incorporated in said valve box, said valve box being connected with a compressed-air supply pipe and provided with an exhaust port at one portion of a circumferential wall thereof, said flexible valve diaphragm having almost the same width as the internal width of said valve box, one end of said flexible valve diaphragm being fixed between said compressed-air supply pipe and said exhaust port inside said valve box while another end of said flexible valve diaphragm being fixed between said compressed-air supply pipe and said air bag, and a reflected portion having a length of such a degree of projecting from said valve box into the inside of said air bag.
Claim 3
Dependent Claim 41 words
A rapid exhaust valve for use in a blood circulation stimulator as set forth in claim 1, in which said exhaust port of said valve box is dislocated from the injecting direction of said compressed-air supply pipe by the appointed angle.

References Cited (Backward Citations)

FR427561A Cited
US2698711A Cited
GB748363A Cited
US3242921A Cited
US3460558A Cited
US3093153A Cited
GB1034759A Cited
US3880149A Cited
US4057046A Cited
US4178940A Cited
US4175297A Cited
US4355653A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-11-11 1989-05-13 1989-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-11-11 1993-05-13 1993-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-11-11 1997-05-13 1997-11-12 $7700.00 Window Closed / Lapsed

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