Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1990-01-25
1991-09-10
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
198766, B65G 2700
Patent
active
050466020
ABSTRACT:
An inertial-type conveyor system for the moving of articles from one position to another, the system having minimal detrimental vibrations. During a forward stroke of a tray of the system, the tray moves at an acceleration less than that required to overcome the frictional contact between the articles and the tray. Then during a return stroke, of an equal distance, the tray moves at an acceleration sufficiently greater such that the articles continue to move by inertia while the tray is moving backward. In the preferred embodiment, the system is provided with a counterweight mechanism having a counterweight that moves in an opposite direction to the direction of motion of the tray to offset the reaction force produced by the moving tray. Elimination of undesirable vibrations is achieved through the use of the counterweight and by having the tray and counterweight to be substantially the same mass and have substantially the same center of gravity. In the preferred embodiment, the simultaneous movement of the tray and counterweight is achieved by cam followers in contact with cam surfaces of selected contours on a single rotatable cam member. Typical operating conditions are given.
REFERENCES:
patent: 3476234 (1969-11-01), Allen et al.
patent: 3817370 (1974-06-01), Cox
patent: 3910422 (1975-10-01), Zierpka
patent: 4019626 (1977-04-01), Kamner
patent: 4436199 (1984-03-01), Baba et al.
patent: 4567979 (1986-02-01), Hoehn
Gundlach Joseph C.
Smalley Alfred E.
Acraloc Corp.
Dixon Keith L.
Smalley Mfg. Co.
Valenza Joseph E.
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