Variable-pitch racked bar

Details Variable-pitch racked bar Variable-pitch racked bar

1996-08-23

1999-01-19

Marmor, Charles A.

Machine element or mechanism

Gearing

Directly cooperating gears

74498, 74462, B62D 312

Patent

active

058603239

ABSTRACT:
A variable-pitch racked bar has a row of rack teeth with a middle fixed pitch region and two end fixed pitch regions. A variable-pitch region is interposed between the middle fixed pitch region and each of the end fixed pitch regions. In the variable-pitch region, the pitch increases from the fixed, small-pitch middle region toward the fixed, large-pitch end regions. In the variable-pitch racked bar, the effective meshing width continuously decreases from the middle of the row of rack teeth toward both ends thereof.

REFERENCES:
patent: 3753378 (1973-08-01), Bishop
patent: 4133221 (1979-01-01), Clary
patent: 4444070 (1984-04-01), Yanai
patent: 4598451 (1986-07-01), Ohki
patent: 4619155 (1986-10-01), Futaba
patent: 4890683 (1990-01-01), Matsuda et al.
Patent Abstract of Japan, vol. 6, No. 83 (M-130), May 21, 1982 and JP 57022454 A (Nissan), Feb. 5, 1982.
Patent Abstract of Japan, vol. 4, No. 94 (M-19), Jul. 8, 1980, and JP55 051161A (Nippon Seiko), Apr. 12, 1980.

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