Surgery – Respiratory method or device – Means for indicating improper condition of apparatus
Patent
1994-10-24
1997-09-16
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for indicating improper condition of apparatus
12820227, 12820523, 12820617, 12820621, 12820125, 12820522, 55274, 116206, 374162, A62B 904, A62B 700, A62B 1808, B01D 1900
Patent
active
056669496
ABSTRACT:
An exposure indicating apparatus and indicating method includes a sensor having a property responsive to a concentration of a target species. A processing device generates a concentration signal as a function of the property and an indicator is activated as a function of the concentration signal. The indicator is activated at a signaling rate indicative of an exposure indicating apparatus operating within predefined design parameters and at an exposure signaling rate indicative of the concentration attaining a predetermined threshold concentration. The indicator may also be activated at a signaling rate indicative of an exposure indicating apparatus operating outside of the predefined design parameters, and after the predetermined threshold concentration is attained, the indicator may be activated at an exposure signaling rate which varies as a function of the concentration signal.
REFERENCES:
patent: 3902485 (1975-09-01), Wallace
patent: 3911413 (1975-10-01), Wallace
patent: 3953556 (1976-04-01), Gore
patent: 4146887 (1979-03-01), Magnante
patent: 4390869 (1983-06-01), Christen et al.
patent: 4440162 (1984-04-01), Sewell et al.
patent: 4539256 (1985-09-01), Shipman
patent: 4669415 (1987-06-01), Boord
patent: 4726989 (1988-02-01), Mrozinski
patent: 4812352 (1989-03-01), Debe
patent: 4847594 (1989-07-01), Stetter
patent: 4873970 (1989-10-01), Freidank et al.
patent: 5018518 (1991-05-01), Hubner
patent: 5039561 (1991-08-01), Debe
patent: 5238729 (1993-08-01), Debe
patent: 5280273 (1994-01-01), Goldstein
patent: 5297544 (1994-03-01), May et al.
patent: 5303701 (1994-04-01), Heins et al.
patent: 5336558 (1994-08-01), Debe
patent: 5338430 (1994-08-01), Parsonage et al.
patent: 5413097 (1995-05-01), Birenheide et al.
R.V. Arenas et al., "Portable, Multigas monitors for Air Quality Evaluation Part II: Survey of Current Models", American Laboratory, Jul. 1993, pp. 25-31.
E.S. Moyer et al., "Preliminary Evaluation of an Active End-of-Service-Life Indicator for Organic Vapor Cartridge Respirators", Am. Ind. Hyg. Assoc. J., 54(8), Aug. 1993, pp. 417-426.
G.J. Maclay et al., "A Prototype Active End-of-Service-Life Indicator for Respirator Cartridges", Appl. Occup. Environ. Hyg., 6(8) Aug. 1991 pp. 677-682.
CEA Instruments, Inc., "Personal Gas Detector" (product literature) Jan. 1994, Emerson, NJ.
Spectrex Corporation, "Color-Bar, VOC Gas Sensor Model C-10" (product literature), Redwood City, CA.
MSA, "Cricket Personal Alarms (80-00-14)" (product literature), 1994, 08-00-14, 2pp.
Enmet Corporation, "Toximet Series O.sub.2 -CO -H.sub.2 S -NO -H.sub.2 -NO.sub.2 -HC1 -HCN -SO.sub.2 -C1 -NH.sub.3 " (product literature), PDG-2200-Apr. 1993, Ann Arbor, MI 48106, 2pp.
Texas Instruments, "TLC251C, TLC251AC, TLC251BC, TLC251Y Programmable Low-Power LinCMOS Operational Amplifiers", Nov. 1991 (product literature) 3pp.
Federal Register, vol. 49, No. 140, Jul. 19, 1964, pp. 29270-29272.
Debe Mark K.
Miller Lowell R.
Parsonage Edward E.
Poirier Richard J.
Yuschak Gregory
Asher Kimberly L.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Rogers James A.
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