Encapsulated roller for helical bearing surfaces
OwnerJohn Matthew Mor, Duane Otto Wattinventors
Life of this patent
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Abstract
A variable speed belt drive bearing assembly including an enclosed helical ramp assembly or torque sensing helix (4) which is mounted on the driven or secondary clutch (20). The helix (4) includes a plurality of ramps (10) that include both an upper bearing surface (13) and a lower bearing surface (9). This arrangement ensures that the torque transferring roller or button (18) is always in contact with either one or both of the surfaces. The cover (68) of the driving or primary clutch assembly (65) includes an enlarged opening (61) to permit the mounting of a sleeve (60) which slides over the engine clutch shaft (66).
Claims8
A torque sensing assembly for use in a variable speed belt drive driven clutch in which the driven clutch is formed to include a belt residing between a fixed sheave and a movable sheave, the torque sensing assembly being rigidly affixed to the movable sheave, comprising:
- (a) a cylindrical body portion formed substantially as a right cylinder, the right cylinder having a circumferential wall;
- and
- (b) a fixed sheave comprising a button;
- (c) at least one substantially helical slot formed within the circumferential wall, the slot being adapted to receive the button, the button having a diameter and being rigidly affixed to the fixed sheave, the button being movable with respect to the slot, the button having opposing sides which are simultaneously constrained within the substantially helical slot such that lateral and nonhelical movement of the button within the slot is prevented.
Dependencies are inferred from the claim text.