Argonaut Technologies, Inc.

Daniel M Bernstein

Steve Miller

Peter Wright

Jim Wasson

A valve apparatus (2) for selectively distributing the sequential passage of separate, organic fluids to a common receiver, such as a reaction vessel. The valve apparatus comprises a valve body member (16) having multiple openings (56) and a plurality of separate conduits (54) each communicating a fluid source with one of the openings. The body member also has a common passage (60) with circular groove portions (62) surrounding the openings so that fluid flows radially outward from the openings toward the common passage. A plurality of pistons (30) are individually reciprocable between first and second positions for controlling fluid flow between associated openings and the common passage. The invention also provides a system (100) and method for measuring and delivering a precise quantity of each of the organic fluids, e.g., chemical reagents, to the reaction vessel.

Systems and methods for distributing fluids

Valve apparatus and method for distributing fluids

A temperature sensor that provides an electrical signal that is a known function of temperature. A conductive surface of the object whose temperature is to be measured is incorporated into the electrical circuit that measures the temperature-dependent electrical signal. If the surface is not electrically conductive, a thermally and electrically conductive region is provided, as by plating the surface or bonding a thin sheet of conductive material to the surface. The conductive portion of the surface is contacted at a first location by a portion of the sensor, and at a second, spatially distinct, location by a conductor that is needed to complete the electrical circuit. Unless electrical contact is established at both of these locations, the result is a condition that is readily identifiable. Since electrical contact will only be made if there is good thermal contact, thermal contact is verified by verifying the electrical contact as part of the measurement.

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Redwood City, CA, United States of America

Daniel M Bernstein