Patent ID: 8098229

Claim:
A control device for a computer, comprising: a base for placing on a table; a support for a human hand, provided with at least one switch where said support comprises a thumb-supporting element and a curved finger-supporting element, said elements being located at different levels in the operating position, with said thumb-supporting element and said finger-supporting element merging into a common hand-supporting element, said hand-supporting element comprising a hand-supporting part extending at an angle from the base, wherein (X) is a distance from the start of the hand-supporting part to the end of the finger-supporting element; (Y) is a width of the finger-supporting element at the highest point of the curve thereof; Z 1 is a height of the curvature of the finger supporting element and Z 2 is the highest point of the curvature of a thumb supporting element, wherein Y/X lies between 0.3 and 0.6 and Z 1 is approximately 1.6 Z 2 , wherein said thumb-supporting element is curved, and a distance H from the highest point of the curvature of said thumb-supporting element to the end surface of said thumb-supporting element is a function of X according to the following X H 161 mm 65 mm 171 mm 69 mm 182 mm 73 mm 191 mm 77 mm 201 mm 81 mm including interpolated values.