Machine element or mechanism – Gearing – Nonplanetary gearing differential type
Patent
1982-04-22
1985-02-12
Krizmanich, George H.
Machine element or mechanism
Gearing
Nonplanetary gearing differential type
74711, F16H 3504, F16H 144
Patent
active
044983557
ABSTRACT:
A locking means fitted within a conventional automotive vehicle type differential housing assembly normally couples the wheel axles to the power rotated housing so that the axles are driven by and rotate with the housing. When either axle rotates faster than the other axle and the housing, the locking means momentarily uncouples the faster rotating axle so that it freewheels, while the other axle continues to be driven. The locking means includes a pair of axially aligned, closely spaced apart coupling rings, each of which surrounds a bushing-like hub mounted upon and axle end portion located within the housing. A diametrically arranged, drive rod of hexagonal cross-section is positioned between the rings and extends through opposite pairs of aligned V-shaped notches formed in the facing ends of the rings. The outer ends of rod are fastened to the housing for rotating therewith. The walls of the notches are parallel to, but slightly spaced from, their adjacent rod faces. Thus, when the rod rotates with the housing, it engages the notch forming walls in its rotational path to rotate the coupling rings and simultaneously wedge them outwardly apart. The coupling rings are connected to the hubs by clutches that engage when the rod moves the rings apart and disengage when the rings move inwardly towards each other. When one axle rotates faster than the housing, its coupling ring advances angularly relative to the rod to disengage its notch forming walls from the rod, which results in its ring moving inwardly towards the other ring to disengage its clutch for freewheeling until its speed returns to housing speed. A limit means keeps the rod centered within the notches when the coupling ring is angularly advanced.
REFERENCES:
patent: 1275952 (1918-08-01), Luxmore
patent: 1286362 (1918-12-01), Lewis
patent: 1431036 (1922-10-01), Pondelick
patent: 1619141 (1927-03-01), Lewis
patent: 2179923 (1939-11-01), DeLavand
patent: 2397673 (1946-04-01), Lewis
patent: 2720796 (1955-10-01), Schou
Krizmanich George H.
Wright Dirk
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