Company Filing History:
Years Active: 1985
Title: Rolf Dohmer: Innovator in Hearing Aid Technology
Introduction
Rolf Dohmer is a notable inventor based in Kitchener, Canada. He has made significant contributions to the field of hearing aid technology, holding 2 patents that showcase his innovative spirit and technical expertise.
Latest Patents
One of Rolf's latest patents is a hearing aid wax guard. This mushroom-shaped wax guard features a cross passage through its head that intersects with an axial passage in its stem. The axial passage contains an acoustic filter that terminates in its characteristic impedance. The design of the cross passage is semi-circular in section, which reduces the projection of the guard into the ear canal. The total area of the two branches of the passage exiting from the axial passage is equal to that of the axial passage. This guard is designed to snap fit into a metal ring that is glued into the outlet port of the hearing aid.
Another significant patent involves plugs, receptacles, and hearing aids. In this invention, a connecting cord has a plug at each end, allowing either plug to be connected to the receptacle of a hearing aid. When one plug is connected, the internal hearing aid microphone is shorted out, while the other plug allows both microphones to operate in parallel. The plug contacts are formed from printed circuit board, and each plug features a rocker with a hooked top that engages a slot in the receptacle to prevent accidental disconnection. This invention also includes internal circuit configurations that enable the connection of other signaling systems to the hearing aid.
Career Highlights
Rolf Dohmer works at Unitron Industries Ltd., a company known for its advancements in hearing aid technology. His work has significantly impacted the design and functionality of hearing aids, improving the user experience for individuals with hearing impairments.
Collaborations
Throughout his career, Rolf has collaborated with notable colleagues, including William J. Gastmeier and Rolf Strothmann. These collaborations have fostered innovation and contributed to the development of cutting-edge hearing aid solutions.
Conclusion
Rolf Dohmer's contributions to hearing aid technology through his patents and work at Unitron Industries Ltd. highlight his role as an influential inventor in the field. His innovative designs continue to enhance the lives of those with hearing challenges.