Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1995-10-05
1997-04-15
Millin, V.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
137316, A62B 902
Patent
active
056199880
ABSTRACT:
A self-registering piston for an pressure regulator that minimizes variability of the target regulated pressure. The pressure regulator valve includes a valve body having a valve seat interposed between an inlet port supplying unregulated pressure and an outlet port. A piston having a piston seat at a first end and a counter-force surface on the second end is positioned to translate axially from an engaged position when a piston seat is engaged with a valve seat and a disengaged position. A biasing mechanism is provided to bias the piston toward the disengaged position. The pressure regulator includes a passageway extending generally from proximate the piston seat to the counter-force surface to couple the counter-force surface with the regulated pressure. The regulated pressure acts on the counter-force surface in opposition to the combination of the unregulated pressure acting on the piston seat, the deformation force necessary to deform the piston seat and achieve an air-tight seal, and the biasing mechanism acting on the piston. A retaining mechanism is provided for releasably retaining the piston seat to the valve seat. A guide mechanism is provided for maintaining a fixed rotational orientation of the piston seat with respect to the valve seat so that a substantially identical rotational orientation is achieved when the piston is removed and reinserted into the valve body.
REFERENCES:
patent: 543448 (1895-07-01), Lowe
patent: 1173913 (1916-02-01), Anderson
patent: 1984792 (1934-12-01), Ford
patent: 2008198 (1935-07-01), Beggs
patent: 2528440 (1950-10-01), Kmiecik
patent: 2674260 (1954-04-01), Thrush
patent: 3563268 (1971-02-01), Williams
patent: 4015630 (1977-04-01), Contreras
patent: 4114389 (1978-09-01), Bohmrich et al.
patent: 4178961 (1979-12-01), Warncke
patent: 4192298 (1980-03-01), Ferraro et al.
patent: 4219017 (1980-08-01), Shamlian et al.
patent: 4284102 (1981-08-01), Adler
patent: 4378011 (1983-03-01), Warncke et al.
patent: 4606339 (1986-08-01), Walther
patent: 4676268 (1987-06-01), Sano
patent: 4699170 (1987-10-01), Diephuis et al.
patent: 4750485 (1988-06-01), Bartos
patent: 4841953 (1989-06-01), Dodrill
patent: 5070485 (1991-12-01), Nyce
patent: 5099835 (1992-03-01), Nelepka
Fabin Frank J.
Mattila Robert J.
Griswold Gary L.
Kirn Walter N.
Millin V.
Minnesota Mining and Manufacturing Company
Raciti Eric P.
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