Motion conversion device and rotary displacement device

Details Motion conversion device and rotary displacement device Motion conversion device and rotary displacement device

1981-07-08

1983-11-08

Smith, Leonard E.

Rotary expansible chamber devices

Intermittently accelerated and receding members rotate in...

Each a working member

74 63, 74393, 74394, 74796, F04C 200, F16H 3502

Patent

active

044139616

ABSTRACT:
A motion conversion device comprising a cam mounted for rotation about an axis eccentric to a central axis, said eccentric axis being rotatable about said central axis, the cam having N lobes the outermost points of which are equally spaced around and equidistant from the eccentric axis, N being an odd integer other than 1, means for effecting relative rotation between the central axis and the cam on rotation of the eccentric axis about the central axis or rotation of the cam about its eccentric axis whereby the cam is arranged to rotate about its eccentric axis at an angular velocity of (2/N+1) times the angular velocity of the eccentric axis about the central axis, a pair of cam followers rotatable about an axis substantially coincident with the central axis, the cam followers being in contact with the cam on opposed sides of the central axis and equidistant from the central axis, the cam being formed such that on rotation of the eccentric axis about the central axis at a substantially constant velocity the cam followers undergo 2 N cycles of acceleration from a dwell condition and deceleration to a dwell condition for each revolution of the cam followers.

REFERENCES:
patent: 1692160 (1928-11-01), Dormer
patent: 1732995 (1929-10-01), Tschudi
patent: 2049122 (1936-07-01), Kuba
patent: 2061131 (1936-11-01), Bancroft
patent: 2544480 (1951-03-01), Bancroft
patent: 2612878 (1952-10-01), Wilson
patent: 2618984 (1952-11-01), Oliver
patent: 3241531 (1966-03-01), Bancroft
patent: 3937187 (1976-02-01), Bergen

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