Electrolarynx thumbwheel arrangement

摘要

An electrolarynx includes a case and a thumbwheel component within its hollow interior that includes a wheel with a peripheral edge. A wheel-receiving slot extends from the exterior surface of the case to the hollow interior, and the wheel is disposed partially within that slot so that the peripheral edge of the wheel is accessible with a finger of a user from the exterior of the case for purposes of engaging and turning the wheel. The case includes a radially outward protruding wheel-protecting structure next to the wheel-receiving slot that shields (i.e., protects) the wheel from an impact directed parallel to the rotational axis of the wheel, without the radially outward protruding wheel-protecting structure preventing the user from engaging and turning the wheel with a finger of the user.

主权项

1. An electrolarynx, comprising:
a case extending along a central axis of elongation of the case, said case defining a hollow interior of the case; and a first thumbwheel component mounted within the hollow interior of the case, said first thumbwheel component having a first wheel with a first peripheral edge centered on a rotational axis of the first wheel; wherein the case defines a first wheel-receiving slot in the case that extends from the exterior surface of the case to the hollow interior of the case; wherein the first wheel is disposed partially within the first slot so that the first peripheral edge of the first wheel is accessible by a user with a finger of the user for purposes of engaging and turning the first wheel; and wherein the case includes a first radially outward protruding wheel-protecting structure next to the first wheel-receiving slot that serves the function of protecting the first wheel from an impact directed parallel to the rotational axis of the first wheel, without said first radially outward protruding wheel-protecting structure preventing the user from engaging and turning the first wheel with a finger of the user.