Conveyors: power-driven – Conveyor section – Endless conveyor
Reexamination Certificate
1999-01-22
2001-04-03
Ellis, Christopher P. (Department: 3651)
Conveyors: power-driven
Conveyor section
Endless conveyor
C198S816000
Reexamination Certificate
active
06209715
ABSTRACT:
DESCRIPTION
1. Technical Field
The present invention generally relates to systems for adjusting the tension and tracking of an endless belt, and in particular to systems that provide for easy and quick adjustments.
2. Background Art
In many conveyors available today, belt tensioning and tracking mechanisms are combined by journaling the ends of a pulley in blocks that are slidably mounted to the conveyor's frame. Accordingly, these mechanisms provide for adjustments to the tension and tracking of the conveyor belt by adjusting the position of the slide blocks. However, in mechanisms of this type, an adjustment to the belt tracking effects the tensioning, and vice versa. Accordingly, trained personnel are required for properly adjusting the belt's tension and tracking.
Moreover, many conveyors are used in applications wherein, if the length of the conveyor is changed, then other automated production equipment connected to the conveyor must also be repositioned to accommodate the change in length. In addition, after each adjustment to the conveyor belt, many tensioning and tracking mechanisms require that an excessive number of bolts and screws be tightened for securing the position of the conveyor's pulleys.
Also, few conveyors provide for easy removal and replacement of the belt during maintenance. Instead, many conveyors require a time consuming process wherein several parts must be removed before the belt.
Hence, the present invention overcomes the above discussed deficiencies of the prior art.
SUMMARY OF THE INVENTION
Generally, the tensioning and tracking systems of the present invention include a pair of plate members attached together and defining a channel and an elongated opening. Mounted within the channel is a slide plate having a distal end. Also, connected to one of the side plate members is a rotating member for reciprocally advancing the distal end of the slide plate within the elongated opening. The position of the slide plate being secured by a locking screw connected to one of the plate members.
Other advantages and features of the present invention will be apparent from the following description of specific embodiments illustrated in the accompanying drawings.
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Deuble Mark A.
Ellis Christopher P.
Wallenstein & Wagner Ltd.
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