Title:
VALVE ENGAGED WITH SEAT HAVING SUFFICIENT SEALING
Document Type and Number:
Japanese Patent JP3125735
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To secure sufficient sealing irrespective of incompatibility between a valve member and a seat by interconnecting the valve member and a displacing means by a wire and displacing the wire in an axial direction so as to control the opening of a valve.
SOLUTION: A ventilator is provided for receiving pressure-governed gas such as air and an oxygen mixture and controlling the flow of the gas to a patient so as to provide artificial respiration. The ventilation includes a flow control valve 42 for adjusting the flow rate of gas provided to the patient during respiration. This flow control valve 42 has a valve seat 62 to be positioned between an inlet 56 and an outlet 60 and an opening 64 having a truncated cone nozzle portion 66 converged in the inlet 56 side and a divergent truncated cone nozzle portion 68 in the outlet 60 side is formed on the valve sheet 62. Then, a ball-like valve member 72 is seated on the nozzle portion 68 and, by the operation of a stepper motor 74, the opening of the valve is adjusted via a roller 82, a core bar 86 and a wire 88 operated associatively with the cam surface 80 of a cam 78.
Inventors:
Douglas F. Debreeze
Lyndon A. Baker
Lyndon A. Baker
Application Number:
JP35765097A
Publication Date:
January 22, 2001
Filing Date:
December 25, 1997
Export Citation:
Assignee:
Bird Products Corporation
International Classes:
F16K1/36; A61M16/00; A61M16/20; A62B9/02; F16K31/44; F16K39/02; A61M16/12; (IPC1-7): F16K31/44; A61M16/20; F16K1/36; F16K39/02
Domestic Patent References:
| JP56109667A | ||||
| JP6119180U | ||||
| JP6091857U | ||||
| JP5321784Y2 |
Attorney, Agent or Firm:
Hisaro Fukami (1 person outside)