Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1987-06-29
1988-10-25
Bonck, Rodney H.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74793, F16H 3706
Patent
active
047794860
ABSTRACT:
The differential gear momentum compensated actuator is a mechanism that maintains the rotational rate of a planetary carrier relative to a sun gear a constant negative multiple of the rotational rate of the pointed device relative to the sun gear enabling momentum compensation, but when the angular rate of the pointed device relative to its support bearing races is zero, large non linear friction torques act on the pointed device and prevent precision device pointing. The improved rate biased differential gear momentum compensated actuator is a mechanism for rotationally articulating the sun gear relative to the base vehicle at a biased angular rate while the pointed device independently tracks the target angular rate. The bias angular rate of the rotational reference sun gear results in each pointed device support ball bearing race having a different rotational rate thus preventing stiction friction torques from acting on the pointed device.
REFERENCES:
patent: 286206 (1883-10-01), Lavery
patent: 1777490 (1930-10-01), Hardie
patent: 1951424 (1934-03-01), Lewis
patent: 1981789 (1934-11-01), Gerard
patent: 2441111 (1948-05-01), Delaplace
patent: 2969696 (1961-01-01), Fraga
patent: 3960036 (1976-06-01), Moller
patent: 4265142 (1981-05-01), Watanabe
patent: 4295391 (1981-10-01), Philpott et al.
patent: 4406178 (1983-09-01), Gillade
Bonck Rodney H.
Diehl Dwight G.
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