Abstract: A liquid applicator of the type used to apply pre-operative liquid to the body prior to surgery. The liquid is contained in a sealed ampoule. The applicator has a hollow cylindrical handle with an internal configuration which firmly seats the ampoule within the handle. A neck section of the housing, generally seated with and extending from the handle has a thin-walled section positioned very close to the neck of an ampoule supported in the handle, so that manual depression of the thin-walled section allows the operator to sever the ampoule tip from the ampoule body, allowing one-handed release of fluid prior to application.

Abstract: A fluid dispenser system is disclosed having a suitable spatial separation between a fluid-containing ampule contained therewithin and the user's fingers is provided by a plurality of members extending between the ampule and the user's fingers. The separation prevents shards of glass resulting from breakage of the ampule from cutting the user's fingers. Gripping portions of the dispenser may be profiled or roughened on the surface to provide greater gripping capabilities.

Abstract: A combined speech diaphragm and exhalation valve for a respirator is formed as a unitary sub-assembly whereby the speech diaphragm is movable in unison with the exhalation valve.

Abstract: An ampule-type inhalant dispenser is disclosed, and the manner in which it can be formed, in which shards of glass produced upon fracturing of the ampule are maintained in substantial parallelism with a mutually presented face of enveloping packaging material in order to prevent the sharp edges of the shards from piercing the packaging material, with consequent hazard to the fingers of the user.

Abstract: A respirator having a disposable filter includes a valve body having a central aperture providing concentric inhalation and exhalation valves.

Abstract: A yoke for the face piece of a respirator is formed from plastics material and is provided with hinge portions of lesser thickness than the remainder of the yoke, which are stressed during assembly of the respirator to resiliently position wings of the yoke as dihedrals.