×

Resuscitation and inhalation device

  • US 5,398,714 A
  • Filed: 07/08/1993
  • Issued: 03/21/1995
  • Est. Priority Date: 03/06/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A flow control valve apparatus, comprising;

  • a chamber;

    a valve member reciprocally mounted in said chamber and acted upon by gas pressure in said chamber;

    a flow control valve, acted upon by said valve member to an open position;

    means for connecting a high pressure source to an inlet of said flow control valve;

    means for connecting a variable pressure volume to said chamber;

    means for selectively connecting a low pressure volume to said chamber;

    a first magnetic member on said valve member;

    a second magnetic member in spaced opposition to said first magnetic member;

    one of said first and second magnetic members being magnetized, to restrain movement of said valve member by said gas pressure in said chamber;

    said valve member being moved against said restraint when said variable pressure reaches a predetermined maximum value, to permit closing of said flow control valve, and to permit said connection of said low vent pressure volume to said chamber; and

    said valve member being moved with said restrain when said variable pressure reaches a predetermined low value, to open said flow control valve.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×