Abstract: A fluid sampling device in which a resilient element held between an actuator and a probe drives the tip of the latter sealingly against a source of fluid, and creates a negative pressure at the tip on its removal from the source.

Abstract: A pressure sensor comprising a first housing piece defining a lumen therethrough and an opening to said lumen to provide communication between said lumen and a sensing element, said first housing piece having a first surface surrounding said opening, a second housing piece shaped for mating with said first housing piece and providing, with said first housing piece, a region for containing a sensing element in position to communicate with said lumen via said opening, said second housing piece having a second surface that surrounds said region and faces and conforms to the shape of said first surface, said second housing piece including an end of an electrical wire and wire contacts that are electrically connected to said wire, having portions at or near said second surface, and are spaced from each other, a sensing element in said region in communication with said flowpath via said opening, said sensing element including sensor contacts aligned with respective wire contacts, and an elastomeric sheet providing

Abstract: A pressure sensor comprising a first housing piece defining a lumen therethrough and an opening to said lumen to provide communication between said lumen and a sensing element, said first housing piece having a first surface surrounding said opening, a second housing piece shaped for mating with said first housing piece and providing, with said first housing piece, a region for containing a sensing element in position to communicate with said lumen via said opening, said second housing piece having a second surface that surrounds said region and faces and conforms to the shape of said first surface, said second housing piece including an end of an electrical wire and wire contacts that are electrically connected to said wire, have portions at or near said second surface, and are spaced from each other, a sensing element in said region in communication with said flow path via said opening, said sensing element including sensor contacts aligned with respective wire contacts, and an elastomeric sheet providing a

Abstract: A substantially solid temperature-dependent light absorbing mass including multiple-faceted randomly oriented and distributed reflecting chips is optically coupled on the terminal end of a fiber optical light conductor.

Abstract: A laminated membrane for use with an enzyme electrode without the need for use of a compensating electrode. The laminated membrane comprises a layer of essentially homogeneous material such as cellulose acetate or silicone rubber which will prevent passage of even low molecular weight interfering materials, an adhesive layer containing the enzyme (with or without other materials that may be blended with it), and a layer of support film which will also prevent the passage of high molecular weight interfering materials.

Abstract: A compact ratchet mechanism for box end or similar wrenches comprises a driver ring with cam teeth on one face, a driven ring rotatably confined in the driver ring and having the wrench configuration in its interior, and a pawl ring rotatably supported on the driven ring. The pawl ring has cam teeth cooperating with the driver cam teeth, and the pawl ring and driven ring have shorter interfitting teeth. The cam teeth have sufficient rise to hold the shorter teeth engaged when the driver ring is rotated one way, and to allow the shorter teeth to disengage when the driver ring is rotated the other way.

Abstract: A laminated membrane for use with an enzyme electrode without the need for use of a compensating electrode. The laminated membrane comprises a layer of essentially homogeneous material such as cellulose acetate or silicone rubber which will prevent passage of even low molecular weight interfering materials, an adhesive layer of the enzyme itself (with or without other materials that may be blended with it), and a layer of support film which will also prevent the passage of high molecular weight interfering materials.