Measuring and testing – Fluid pressure gauge – Piston
Patent
1995-11-27
1997-02-25
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
Piston
128748, G01L 716, A61B 503
Patent
active
056061315
ABSTRACT:
A manometer for use in a patient's breathing circuit, comprising a housing forming a bore and a slider movably mounted within the bore. The slider is movable between an at-rest position, an expanded pressure range, and a contracted pressure range. A spring is connected to the slider for urging the slider toward the at-rest position, while allowing movement of the slider in the two ranges due the pressure in the breathing circuit. The housing is connectable to the breathing circuit such that the gas pressure moves the slider from the at rest position and into at least the expanded pressure range. At relatively low pressures, the slider is moved into the expanded pressure range and at higher pressures, the slider is moved into the contracted pressure range against the force of the spring. The spring is formed by a relatively short tension spring and a relatively long tension spring.
REFERENCES:
patent: 2038928 (1936-04-01), Farley et al.
patent: 2278776 (1942-04-01), Fowler
patent: 3874378 (1975-04-01), Isaacson et al.
patent: 3964476 (1976-06-01), Palleni
patent: 4098271 (1978-07-01), Maddock
patent: 4106502 (1978-08-01), Wilson
patent: 4203385 (1980-05-01), Mayer et al.
patent: 4239038 (1980-12-01), Holmes
patent: 4249527 (1981-02-01), Ko et al.
patent: 4361107 (1982-11-01), Gereg
patent: 4374521 (1983-02-01), Nelson et al.
patent: 4440163 (1984-04-01), Spergel
patent: 4468969 (1984-09-01), Schwartz
patent: 4539985 (1985-09-01), Magrath
patent: 4584997 (1986-04-01), Delong
patent: 4821713 (1989-04-01), Bauman
patent: 4945918 (1990-08-01), Abernathy
patent: 4966035 (1990-10-01), Huang
patent: 5067487 (1991-11-01), Bauman
patent: 5076267 (1991-11-01), Pasternack
patent: 5109840 (1992-05-01), Daleiden
patent: 5140982 (1992-08-01), Bauman
patent: 5301667 (1994-04-01), McGrail et al.
patent: 5313938 (1994-05-01), Garfield et al.
patent: 5334182 (1994-08-01), Simons et al.
patent: 5427091 (1995-06-01), Phillips
Chilcot Richard
Felber Joseph L.
Smiths Industries Medical Systems Inc.
LandOfFree
Piston manometer with spring constant dependent upon position does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piston manometer with spring constant dependent upon position, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston manometer with spring constant dependent upon position will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1975534