Patent ID: 7735470

Claim:
A throttle control cartridge comprising: a first member carrying a Hall-effect sensor; a second member carrying a magnet, the second member being rotatable and translatable with respect to the first member; means to position the first member with respect to the second member so that the Hall-effect sensor senses a predetermined magnetic flux density of the magnet; a cam having a first pair of cam surfaces at first and second cam angles carried by one of the first and second members and a cam follower having a second pair of cam follower surfaces at first and second cam angles, the second cam angles different from first cam angles, the cam follower moving away from the cam responsive to rotation of the second member with respect to the first member in the first direction and engaging the cam and translating the another of the first and second members with respect to the one of the first and second members responsive to rotation of the second member with respect to the first member in an opposition direction; means to change the magnetic flux density sensed by the Hall-effect sensor in one direction responsive to rotation of the second member with respect to the first member in a first direction; and means to change the magnetic flux density sensed by the Hall-effect sensor in an opposite direction responsive to translation of the second member with respect to the first member.