Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1979-08-20
1981-09-15
Krizmanich, George H.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74713, 74402, 74395, 192 56R, 64 29, F16H 144, F16H 3506
Patent
active
042890462
ABSTRACT:
The invention provides a simple, yet highly accurate device for synchronizing the speeds of two power-driven machines having separate, variable speed power-drives. A pair of shafts are respectively connected to the two machines and mounted in opposed concentric relationship for rotation in opposite directions at rates respectively proportional to the speed of rotation of the two machines. A differential unit is connected between the two shafts, such unit having equal size input and output sun gears respectively connected to the shafts. The planetary output of the differential unit is connected to a speed control element for at least one of the motors respectively driving the machines to vary the speed of such machine to bring it into rotational synchronization with the other machine. In accordance with a modification of the invention, if angular synchronization is also desired, a one-way clutch is provided between one of the shafts and its respective machine which is disengageable by a minimal torque produced by a difference in the rotational speed of the two shafts, and re-engages only in a fixed angular position when the two shafts are again brought into rotational synchronization.
REFERENCES:
patent: 2018842 (1935-10-01), Durham
patent: 2062136 (1936-11-01), Marresford
patent: 2092958 (1937-09-01), Cutler
patent: 2119247 (1938-05-01), Scott
patent: 2540154 (1951-02-01), Winder
patent: 3185275 (1965-05-01), Orwin
patent: 3511349 (1970-05-01), Herscovici
patent: 3722644 (1973-03-01), Steinhagen
patent: 4142616 (1979-03-01), Dekoninck
patent: 4174621 (1979-11-01), Woltsen
Click Myron E.
Krizmanich George H.
Lynch Charles S.
Owens--Illinois, Inc.
Wilson David H.
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