Here is a photo of an old prototype which is not ergonomic.
Here is a sketch of the current Combimouse.
There is a scroll wheel. In this sketch it is incorrectly shown on the left of the comma key. It will be to the right of the comma key.
The combimouse is a split keyboard.
left part is stationary and provides the function of the left hand side
of a conventional QWERTY keyboard. The right part has a similar mass, centre of gravity and moment of innertia
to a conventional mouse. It also has a similar grip.
part is a mobile combination keyboard and mouse that can be moved around
on a support surface like a conventional mouse. The keys are arranged
in the fashion of the right hand side of a conventional QWERTY keyboard.
By default the right part operates in keyboard mode. When the user grips the right part and so touches the side of the part in the area labeled above as 'Contact switch', the right part automatically changes to mouse mode.
When in this mode, movement of the right part enables cursor movement on the screen and as described below the keys become mouse click buttons and take on the functions labeled in green text.
Moving between keyboard and mouse modes is effortless and intuitive. The transition time between the two modes is insignificant.
The combimouse has
been configured to enable two different methods of operating the right
part whilst in mouse mode. The hand positions for both are comfortable
1 has only two fingers on the mouse keys. The comma key
doubles as the left click button whilst the L key doubles as
the right click button.
2 has three fingers on the mouse keys. The left click button is
the J key, the middle click button is the I key and the
the right click button is the O key
The key layout and variations to support international options are discussed in this blog.