Measuring and testing – Sampler – sample handling – etc. – Conduit or passageway section capture chamber
Patent
1994-02-16
1996-06-11
Williams, Hezron E.
Measuring and testing
Sampler, sample handling, etc.
Conduit or passageway section capture chamber
73864830, 436179, G01N 110
Patent
active
055244963
ABSTRACT:
A liquid sampling valve includes a fixed element having a contact surface and a movable element having a contact surface for contacting the contact surface of the fixed element; the fixed element or the movable element having measuring passageways extending to the contact surfaces, the measuring passageways having an opening for receiving and measuring a liquid sample incorporated into the opening; both the fixed element and the movable element being provided with a plurality of cleaning passageways, each having an opening at a location spaced apart from the central part of the contact surface, the location being different from the locations where the openings for the measuring passageways are provided. Movement of the movable element relative to the fixed element into a first state allows for a liquid sample to be filled into the measuring passageway, and movement into the second state allows for the liquid sample filled in the measuring passageway to be conveyed to out of the element. The plurality of cleaning passageway are arranged in such a manner that movement of the moveable element relative to the fixed element when the cleaning passageways contain cleaning liquid provides for clean areas on the contact surfaces of the elements along circumferential paths travelled by the cleaning passageways.
REFERENCES:
patent: 1780828 (1930-11-01), Leach et al.
patent: 3885439 (1975-05-01), Stone
patent: 3964513 (1976-06-01), Molner
patent: 3991055 (1976-11-01), Godin et al.
patent: 4702889 (1987-10-01), Cabrera et al.
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patent: 4822569 (1989-04-01), Pellegrino
patent: 4957008 (1990-09-01), Proni et al.
patent: 5093083 (1992-03-01), Preston
Kidoh Teruaki
Nagai Takaaki
TOA Medical Electronics Co., Ltd.
Williams Hezron E.
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