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Karlheinz Riester: Otoscope with ejector mechanism. Rudolf Riester & Co, Holman & Stern, January 4, 1983: US04366811 (18 worldwide citation)

This invention is an improvement in otoscopes for ear examinations and the like wherein disposable ear funnels are ejected from the instrument remotely thus avoiding contact by the examiner after use. An ejector is provided in the head portion of the housing of the instrument between the magnifying ...


2
Karlheinz Riester: Otoscope, with pivotally mounted loupe. Rudolf Riester & Co KG Fabrik, Holman & Stern, August 11, 1987: US04685452 (16 worldwide citation)

The invention relates to an otoscope with a pivotally mounted loupe and the otoscope is configured such that all the parts can be inserted in sequence from one side of the housing head into an accommodation opening of the housing head.


3
Karlheinz Riester: Method of manufacturing an otoscope. Rudolf Riester & Co KG Fabrik med Apparate, Holman & Stern, February 17, 1987: US04643171 (11 worldwide citation)

The invention relates to a method of manufacturing an otoscope, according to which method the component parts of the otoscope can be assembled with particular ease. In order to achieve this, a prefabricated fiber optics assembly is employed, and the otoscope is configured such that all the parts can ...


4
Karlheinz Riester: Discharge valve for a blood pressure measuring device or the like. Rudolf Riester & Co KG, Holman & Stern, November 22, 1983: US04416287 (5 worldwide citation)

A discharge valve for a blood pressure measuring device or the like, comprising a valve casing the interior of which is in fluid communication with an inflatable cuff and a pressure measuring device (gauge) and an air outlet leading to a flat valve seat located on the exterior of the valve casing, w ...


5