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| Topology-based fault analysis in telecommunications networks |
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| Satellite cellular communication methods for performing cell-to-cell handoff |
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| Remote control |
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Method and apparatus for controlling conveyor
| Details |
Inventors: Couch, Jimmie D.; Crump, Eric C.;
Assignee: Mazak Corporation (Florence, KY); Jorgensen Conveyors, Inc. (Mequon, WI)
Primary Examiner: Bidwell; James R.
Assistant Examiner:
Attorney, Agent or Firm: Quarles & Bardy, LLP
A clearing method for use with a conveyor belt driven by a reversible motor for essentially automatically eliminating swarf or other obstructions along the belt including an clearing process including sensing motor load and comparing sensed load to a maximum load, when the sensed load exceeds the maximum, stopping the belt, reversing the belt, stopping the belt again and driving the belt forward, and repeating this process until the obstruction is eliminated or a predetermined number of clearing processes have been performed. Also an apparatus for implementing the method including an inverter. |
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DETAILED DESCRIPTION OF THE INVENTION I.
Hardware Configuration Referring now to the drawings, where like reference characters represent corresponding elements throughout the several views, and more specifically referring to FIGS.
1 and 2, the present invention will be described in a context of an exemplary swarf conveyor system 10.
System 10 generally comprises five components or assemblies including a conveyor 12, a motor 14 for driving the conveyor 12, an inverter 16 for driving motor 14, a parameter programming unit 18 and a computerized numerical controller 20.
Referring to FIG.
4, conveyor 12 includes a belt guiding track 22, a track cover 24 and a conveyor belt 26.
Referring specifically to FIG.
1, track 22 defines a course of movement for belt 26.
To this end, track 22 includes a first horizontal section L.
sub.
1, a second horizontal section L.
sub.
2 disposed generally above section L.
sub.
1, and an inclined section L.
sub.
3 between horizontal sections L.
sub.
1, and L.
sub.
2.
Referring to FIGS.
1, 3 and 4, track 22 includes several different walls including a bottom horizontal wall 19, a central horizontal wall 34 and two lateral vertical walls 23 and 25.
Walls 19, 21, 23 and 25 together define an upper channel 30 and a lower channel 32 below channel 30 along the entire length of track 22.
Two low friction runners 36 and 38 are positioned on a upwardly facing surface 40 of wall 19.
Runners 36, 38 are parallel, separated and extend along the entire length of track 22.
Similarly, a pair of low friction runners 42, 44 are secured to an upwardly facing surface 46 of wall 34 in channel 30.
Runners 42 and 44 are also parallel, separated and extend along the entire length of track 22.
Swarf guidance extensions 48 and 50 extend inwardly from facing surfaces of walls 23 and 25 above runners 42 and 44.
An upper surface 52, 54 of each extension 48, 50 respectively, slopes downwardly as it extends inwardly.
Surfaces 52 and 54 help guide swarf onto belt 26 within channel 30.
Referring to FIGS.
1 and 2, track 22 is supported by a leg 58 connected to section L
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Multiplexer-related 
