Machine element or mechanism – Gearing – Rotary bodies
Patent
1991-03-22
1992-11-24
Braun, Leslie A.
Machine element or mechanism
Gearing
Rotary bodies
74820, 74 15, 200 11TC, F16H 5517
Patent
active
051652951
ABSTRACT:
A stepper drive for a step-type transformer has an upper geneva wheel rotatable about a wheel axis, a lower geneva wheel spaced below the upper wheel and also rotatable about the axis, and a driver rotatable about a driver axis adjacent the wheels and having an upper abutment engageable with the upper wheel and a lower abutment engageable with the lower wheel and offset by about 180.degree. relative to the driver axis from the upper abutment. A selector abutment is provided on the upper wheel offset from the axis thereof. A selector lever pivotal about a selector axis offset from the wheel axis is engageble with the selector abutment in end positions of the upper wheel. A blocking plate shiftable radially on the lever between an actuated position and an unactuated position is urged by a spring into the unactuated position. A blocking element on the plate is positioned in the path of the upper abutment of the driver in the actuated position and out of the path of the upper abutment of the driver in the unactuated position. The driver is rotated about its axis to displace the upper drive wheel between its end positions, and engage the selector abutment in the one end position of the upper wheel against the blocking element to shift it into the actuated position on such engagement.
REFERENCES:
patent: 2307112 (1943-01-01), Cunningham
patent: 2534724 (1950-12-01), Miller
patent: 2891405 (1959-06-01), Elmore
patent: 3485965 (1969-12-01), Bleibtreu et al.
patent: 3704582 (1972-12-01), Wuthrich
patent: 5056377 (1991-10-01), Yatchum et al.
Dohnal Dieter
Kloth Gunter
Braun Leslie A.
Dubno Herbert
Maschinenfabrik Reinhausen GmbH
Wilford Andrew M.
Yip Winnie
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