Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Reexamination Certificate
2000-04-18
2001-08-28
Ellis, Christopher P. (Department: 3651)
Conveyors, chutes, skids, guides, and ways
Rollerways
Submerging and rising
C193S0350MD, C193S037000, C193S036000, C193S042000
Reexamination Certificate
active
06279717
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a conveyor, and more particularly to a conveyor frame.
BACKGROUND OF THE INVENTION
Generally speaking, the conveyor frame is of a rolling shaft type or ball type. The conveyor frame of the rolling shaft type provides the one-dimensional and linear motion; nevertheless it is capable of providing an article with a wider support area. The conveyor frame of the ball type is capable of providing the rolling motion in various directions as well as the multi-dimensional planar motion. However, the ball-type conveyor frame provides the article with a point contact support. As far as these two types of the conveyor frames are concerned, they have advantages and disadvantages.
The Taiwan Utility Patent No. 81202836 discloses a conveyor frame having a support which is provided with a rolling shaft conveying structure and a ball conveying structure. The operator may choose to use either the rolling shaft conveying structure or the ball conveying structure, depending on the need of the operation. The disclosure has a rotary platform on which a rolling shaft conveying structure and a ball conveying structure are pivotally mounted. The rotary platform is pivoted to a cross seat by two side pieces which are provided in the inner walls thereof with a confining block corresponding to the inside of the cross seat. The rotary platform turns on the pivoting point such that the confining block presses against the top of the cross seat, and that the rotary platform is capable of a 90-degree rotation. This structure is defective in design in that the rotary platform is located by the confining block, and that the rotary platform is apt to sway when a cumbersome article is being conveyed.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a conveyor frame with the rolling shaft conveying structure and the ball-type conveying structure, which are free from the drawbacks of the prior art conveyor frame described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a conveyor frame comprising a support frame, a round rolling shaft, and a ball frame. The support frame is provided at both ends of a longitudinal axis thereof with a folded plate which is provided with a locating hole. These two folded plates are provided with an annular protrusion. The round rolling shaft is pivoted between the two locating holes of the folded plates. The ball frame has a long body which is provided in one side thereof with a plurality of balls and at both ends thereof with a long cover plate. The long cover plate is provided with a long hole extending along the direction of the longitudinal axis thereof. The long body is further provided at both ends thereof with a shoulder of a predetermined length and extending along the longitudinal side of the cover plate. The ball frame is disposed between the two folded plates such that the two cover plates are disposed in the outer sides of the folded plates, and that the folded plates are disposed on the two shoulders of the cover plates, and further that the annular protrusions of the folded plates are received in the long holes of the cover plates.
REFERENCES:
patent: 5299656 (1994-04-01), Grill
patent: 5337875 (1994-08-01), Lee
patent: 5404984 (1995-04-01), Hagman
patent: 5487445 (1996-01-01), Biehl
patent: 5657857 (1997-08-01), Neilson et al.
patent: 5730579 (1998-03-01), Keck et al.
patent: 6019211 (2000-02-01), Masciarelli, Jr.
patent: 6179024 (2001-01-01), Yang
Browdy and Neimark
Ellis Christopher P.
Shapiro Jeffrey A.
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