Abstract: A binocular indirect ophthalmoscope of the type having a central reflecting prism and a pair of adjustable oculars. The instrument may be used in the examination of eyes having either normally dilated or small pupils. Small pupil capability is achieved by making the aperture of each ocular substantially larger than in conventional ophthalmoscopes. By moving the oculars outwardly from the center line of the observer's pupils, the observer views along an axis offset from the optical axis and utilizes the apex portion of the reflecting prism. In this manner, the observer's pupils may be imaged into a patient's pupil as small as 1.5 millimeters in diameter. The plurality of adjustments required in prior art small pupil ophthalmoscopes is thereby avoided.The foregoing abstract is not to be taken either as a complete exposition or as a limitation of the present invention.

Abstract: A disposable article of manufacture is provided which comprises a Petri-type dish which is divided into separate compartments containing culture media adapted for the rapid identification of uropathogenic bacteria and colony count determination.

Abstract: A novelty device for sustainingly bouncing an object such as a ball. The cone of a loud-speaker is covered by a taut elastic diaphragm against which the object is bounced. When the object strikes the diaphragm, the speaker produces a small electrical pulse which is amplified and returned to the speaker. The amplified pulse is thereby acoustically coupled to the diaphragm which is snapped to restore sufficient energy to the object to overcome frictional losses.

Abstract: A medical dressing is provided which is adapted to perform as a synthetic skin for the therapy and protection of skin wounds such as burns, donor sites for skin grafting, ulcers, and the like. In a preferred embodiment, the medical dressing is transparent, thin and flexible, elastomeric and conformable. The preferred medical dressing comprises a laminate of a thin layer of non-porous segmented polyurethane cohesively secured to a thin layer of thrombogenic reticulated foam.

Abstract: A precision machine tool spindle is mounted in a housing and machine frame by means which maintain the working end of the spindle in a fixed axial position while allowing the driven end to shift axially due to thermal expansion.The foregoing abstract is not to be taken either as a complete exposition or as a limitation of the present invention. In order to understand the full nature and extent of the technical disclosure of this application, reference must be had to the following detailed description and the accompanying drawings as well as to the claims.

Abstract: A transparent security container for an article to be displayed, such as a tape cassette. The container includes an anti-theft device such as a microwave reradiator which triggers an alarm if it enters a microwave field. The container includes a pair of spaced key slots associated with clips for retaining the cassette. A release device at the checkout station permits easy release of the cassette. The container may then be reused.