Fluid operated self aligning roller

Title: Fluid operated self aligning roller

Related Patent Categories: Conveyors: Power-driven, Conveyor Section, Endless Conveyor, Revolvable Means Engaging Carrier Belt Face Automatically Skews To Correct Belt Training Deviation

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20060219527, Fluid operated self aligning roller.

1. A fluid operated device for automatically aligning a roller comprising: a roller frame; a roller with opposite ends and having a first axis of rotation with said opposite ends rotatably mounted to said roller frame; and, a support frame having said roller frame movably mounted to allow said roller frame to move relative to said support frame to allow said roller to skew from said first axis of rotation to a second axis of rotation; and, a first pressurizable bladder positioned between said roller frame and said support frame and normally urging said roller to move from said second axis of rotation to said first axis of rotation.

2. The device of claim 1 and further comprising: a fastening device extending between and pivotally connecting said roller frame to said support frame with said support frame being fixed limiting movement thereof.

3. The device of claim 2 wherein: said roller frame and said support frame face each other to form a cavity in which is located said bladder, said roller frame and said support frame have stops to limit expansion of said bladder where said roller frame moves toward said support frame and to allow expansion of said bladder where said roller frame moves away from said support frame.

4. The device of claim 3 wherein: said roller frame and said support frame have length with said bladder extending substantially along said length.

5. The device of claim 4 wherein: said roller frame has an inverted L-shape and said support frame has an upright L-shape both facing each other to define said cavity.

6. The device of claim 1 and further comprising: a second pressurizable bladder positioned between said roller frame and said support frame and normally urging said roller to move from said second axis of rotation to said first axis of rotation.

7. The device of clam 6 wherein: said roller frame and said support frame have length with said first bladder and said second bladder extending together substantially along said length said first bladder and said second bladder have constant internal fluid pressure urging said roller to rotate along said axis.

8. The device of claim 7 wherein: said support frame has a C-shape and said roller frame includes a pair of spaced apart walls extending into said C-shape defining a pair of cavities receiving said first bladder and said second bladder.

9. (canceled)

10. (canceled)

11. (canceled)

12. (canceled)

13. (canceled)

14. (canceled)

15. A roller to control flow of liquid to an impression cylinder comprising: a frame; a rotatably mounted roller adjacent an impression cylinder forming a liquid receiving area between said roller and said cylinder; an axle having a longitudinal axis with said axle extending through said roller and mounting said roller to said frame, said axle having opposite first and second ends movably mounted to said frame to allow said axle to move relative to said roller and allow said axis to move from a first position to a skewed position relative to said impression roller; and, a first pressurizable bladder extending between said roller and said axle and having a constant internal pressure to urge said roller against said cylinder at a constant pressure even though said axle moves between said first position and said skewed position.

16. The roller of claim 15 and further comprising: a second pressurizable bladder extending between said roller and said axle and having a constant internal pressure to urge said roller against said cylinder at a constant pressure even though said axle moves between said first position and said skewed position.

17. The roller of claim 15 wherein: said bladder extends spiralingly around said axle along the length thereof.

18. A fluid operated device for moving the axis of rotation of a roller relative to the longitudinal axis of a main flame comprising: a roller frame; a roller with opposite ends and having an axis of rotation with said opposite ends rotatably mounted to said roller frame; and, a main frame having a longitudinal axis positioned angularly relative to said axis of rotation with said roller frame movably mounted to said main frame to allow said roller frame to move relative to said main frame to allow said roller to move angularly changing said axis of rotation relative to said longitudinal axis; and, a first pressurizable bladder positioned adjacent said roller frame controlling said roller to move said axis of rotation relative to said longitudinal axis.

19. The device of claim 18 and further comprising: a support frame; and, a fastening device extending between and pivotally connecting said roller frame to said support frame with said support frame being fixed limiting movement thereof.

20. The device of claim 19 wherein: said roller frame and said support frame face each other to form a cavity in which is located said bladder, said roller frame and said support frame have stops to limit expansion of said bladder where said roller frame moves toward said support frame and to allow expansion of said bladder where said roller frame moves away from said support frame.

21. The device of claim 20 wherein: said roller frame and said support frame have length with said bladder extending substantially along said length.

22. The device of claim 21 wherein: said roller frame has an inverted L-shape and said support frame has an upright L-shape both facing each other to define said cavity.

23. The device of claim 18 and further comprising: a second pressurizable bladder positioned between said roller frame and said support frame and normally urging said roller to move said axis of rotation.

24. The device of claim 23 wherein: said roller frame and said support frame have length with said first bladder and said second bladder extending together substantially along said length, said first bladder and said second bladder have constant internal fluid pressure urging said roller to rotate along said axis of rotation.

25. The device of claim 24 wherein: said support frame has a C-shape and said roller frame includes a pair of spaced apart walls extending into said C-shape defining a pair of cavities receiving said first bladder and said second bladder.

Brief Patent Description - Full Patent Description - Patent Claims

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Variable angled-roller belt and conveyor
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Industry Class:
Conveyors: power-driven

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