90 degrees turning device with means for constant angular veloci

Details 90 degrees turning device with means for constant angular veloci 90 degrees turning device with means for constant angular veloci

1988-08-09

1989-12-12

Spar, Robert J.

Conveyors: power-driven

Conveyor for changing attitude of item relative to conveyed...

By actuating item-holder relative to holder-carrying conveyor

198411, B65G 4724

Patent

active

048861553

ABSTRACT:
A turning device including a moving member movable along a linear path, and a turning member which is pivotable through an angle of 90 degrees about an axis perpendicular to the linear path during movement of the turning member along the linear path. A first and a second cam follower are provided on respective first and second surfaces of the turning member. A first cam provided on the second surface of the turning member has a first straight cam surface inclined to the linear path and engageable with the first cam follower, while a second cam spaced apart from the first cam in a direction parallel to the axis of of the turning member has a second straight cam surface engageable with the second cam follower. The second cam surface is inclined to the linear path such that the second cam follower is moved perpendicularly to the linear path in the same direction as the first cam follower as the moving member is moved. The first and second cams are positioned such that an engaging action between the second cam follower and the second cam surface is initiated when an engaging action between the first cam follower and the first cam surface is terminated. Either the axis of rotation of the turning member of the first and second cam followers always lead the other, while the moving member is moved along the linear path.

REFERENCES:
patent: 2830462 (1958-04-01), Vettese
patent: 2928222 (1960-03-01), Lindstaedt
patent: 2952351 (1960-09-01), Stone
patent: 3097733 (1963-07-01), Frydryk
patent: 3269516 (1966-08-01), Lucas
patent: 4483526 (1984-11-01), Balka et al.
patent: 4579517 (1986-04-01), Biggs
patent: 4667621 (1987-05-01), Kusunoki et al.

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