Machine element or mechanism – Mechanical movements – Rotary to intermittent unidirectional motion
Patent
1981-09-03
1984-06-05
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to intermittent unidirectional motion
74785, 74436, 74394, F16H 2704
Patent
active
044520930
ABSTRACT:
A positive planetary drive having zero backlash interconnects coaxial input and output shafts in a drive unit. A plurality of rollers orbiting about the input shaft is always entrapped in rolling contact with a plurality of wedges supported by the output shaft. Cams in the drive unit provide cam surfaces contacted by orbiting rollers on the input shaft to provide a continuous constant velocity output motion at a speed which is less than the input motion. Intermittent motion is provided by cam surfaces engaged by the same rollers which contact the wedges. A gear drive engaged with a cam plate used to form the various cams provides a variable angular relationship between the input shaft and the output shaft. Protection against a torque overload at the output shaft is provided by permitting plungers to rotate with the cam plate when disengaged from seats supported by the housing.
REFERENCES:
patent: 2986949 (1961-06-01), Lancaster et al.
patent: 3379034 (1968-04-01), Gustafson
patent: 3546897 (1970-12-01), Kenny
patent: 3563101 (1971-02-01), Kinnicutt
patent: 3820411 (1974-06-01), Rudolph
patent: 3848472 (1974-11-01), Pim
patent: 3893553 (1975-07-01), Hansen
Mechanism for Intermittent Motion; New York, New York; Industrial Press, Inc. 1972; pp. 139-151; John H. Bickford.
Herrmann Allan D.
Murray Thomas H.
Poff Clifford A.
Rolnicki Joseph M.
LandOfFree
Drive unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drive unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1491921