Differential apparatus having a thrust washer

Details Differential apparatus having a thrust washer Differential apparatus having a thrust washer

1994-08-17

1998-11-24

Marmor, Charles A.

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

475249, 475252, F16H 4826

Patent

active

058399852

ABSTRACT:
A differential apparatus comprises: a casing (1) rotated by an external power; a first shaft (9) rotatably supported by the casing: a second shaft (11) rotatably supported by the casing; a first side gear (17) formed integral with the first shaft: a second side gear (19) formed integral with the second shaft; and a helical pinion gear assembly (29. 31) geared between the first and second side gears within the casing filled with a viscous fluid. Therefore, a differential limiting force can be generated by gearing between the helical pinion gear assembly and tire first and second side gears, when the viscous fluid is pressurized and circulated within the casing by a gear pumping action of the helical pinion gear assembly caused by differential motion between the first and second side gears, even if the torque applied to one of the side gears is zero (as when one tire is floated perfectly from a road surface). The differential apparatus is provided with the differential limiting characteristics of both the torque sensitive type and the rotation difference type, in spite of a simple structure and a low cost.

REFERENCES:
patent: 1389580 (1921-09-01), Davis
patent: 2791919 (1957-05-01), Wildhaber
patent: 2869399 (1959-01-01), Miles
patent: 3251244 (1966-05-01), Nickell
patent: 5122101 (1992-06-01), Tseng
patent: 5147252 (1992-09-01), Mace et al.
patent: 5169370 (1992-12-01), Dye et al.
patent: 5415601 (1995-05-01), Cilano
patent: 5458547 (1995-10-01), Teraoka et al.

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