Adjustable pulleys for mail sorting system

Details Adjustable pulleys for mail sorting system Adjustable pulleys for mail sorting system

1991-09-27

1993-11-16

Britts, Ramon S.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

474132, 474150, 209900, 72289, F16H 712, F16H 724, F16H 708

Patent

active

052618595

ABSTRACT:
A dancer pulley assembly includes a first horizontal plate having an upper surface and a lower surface, a swing arm having a proximal end pivotally mounted to the first horizontal plate on the lower surface thereof and being pivotal about a vertical pivot axis A, a second horizontal plate having an upper surface and a lower surface and being spaced vertically above the first horizontal plate by at least one vertical support, a pulley shaft having an upper end and a lower end, the lower end being mounted on a distal end of the swing arm and extending upwardly through an arcuate opening formed in the first horizontal plate, a dancer pulley rotatably mounted on the pulley shaft between the first and second horizontal plates for rotation about a vertical rotation axis B and being swingable on the swing arm through an arc defined by a distance between the pivot axis A and the rotation axis B, means for guiding the upper end of the pulley shaft during swinging motion of the dancer pulley, and means for adjusting the guide means to maintain a substantially vertical orientation of the rotation axis B.

REFERENCES:
patent: 3038674 (1962-06-01), Wahl
patent: 3641733 (1972-02-01), Cerner
patent: 3994445 (1976-11-01), Tarulli
patent: 4045992 (1977-09-01), Griffiths
patent: 4769110 (1988-09-01), Ohno et al.
patent: 4923133 (1990-05-01), Zaman et al.

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