Positive hold differential mechanism

Machine element or mechanism – Gearing – Nonplanetary gearing differential type

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F16H 3504

Patent

active

041596560

ABSTRACT:
A positive locking differential mechanism that functions to compensate for the difference in driving wheel travel which occurs when turning or traveling over uneven ground, while at the same time functioning to prevent wheel-slip when one wheel loses traction. The differential comprises a spider and center cam assembly having a plurality of trunnions projecting radially from the spider. A plurality of fixed driving clutch teeth are disposed on each side of the spider. The internal diameter of the spider mounts the center cam in such a manner that the same may be rotated a limited, predetermined distance. The center cam is symmetric, having cam lifts on each side which include rounded surfaces that provide anti-friction ramps for disengaging driven clutch members mounted on each side of the spider and center cam assembly. The driven clutch members have clutch teeth which correspond to the clutch teeth of the spider and through which a driving torque is transmitted. The radially inward portions of the driven clutch teeth define disengaging cams which are adpated to mesh with the cams of the center cam member. Enlarged sections and corresponding slotted portions disposed between the clutch members and the spider-cam assembly at spaced intervals maintain the clutch members in a disengaged mode during relative movement between the clutch members and the spider-cam assembly.

REFERENCES:
patent: 2231968 (1941-02-01), Thornton
patent: 2329075 (1943-09-01), Myers
patent: 2638794 (1953-05-01), Knoblock
patent: 2667087 (1954-01-01), Myers
patent: 2667088 (1954-01-01), Myers
patent: 2830466 (1958-04-01), Myers
patent: 3397593 (1968-08-01), Knoblock
patent: 3791238 (1974-02-01), Bokovoy
NoSpin & Tandem-Lock Differentials--Operation & Application, A. A. Choma, S.A.E. Publication, Engr. & Opers. Meeting, Fort Wayne, Ind., Oct. 9-12, 1972, pp. 1-12.
Operation NoSpin Differential Operating Manual, Detroit Automotive, pp. 1-12, 1973.

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