Repositionable extendable stop

1. A conveyor comprising:

two spaced apart frame members;

a plurality of rollers supported by said two spaced apart frame members, said rollers defining an upper conveying surface;

a plurality of gaps defined between said rollers;

a support disposed under said plurality of rollers, said support comprising a plurality of spaced apart actuator mounting locations, each aligned with a respective gap;

at least one actuator carried by said support at a respective actuator mounting location, said support and at least one actuator being configured to permit access to said at least one actuator from under said upper conveying surface in order to install or remove said at least one actuator from below said upper conveying surface;

a respective stop connected to each respective actuator of said at least one actuator such that actuation of said respective actuator moves said respective stop between a first position at which at least a portion of said respective stop extends above said upper conveying surface and a second position at which said respective stop does not extend above said upper conveying surface, said respective stop being insertable through the respective aligned gap from above said upper conveying surface in order to install or remove said respective stop, and

at least one respective guide associated with each actuator mounting location, said at least one respective guide configured to cooperate with said respective stop to guide said respective stop as it moves between said first and second positions, said at least one respective guide comprising at least one groove and at least a portion of said stop is disposed in said at least one groove as said stop moves between said first and second positions.

2. The conveyor of claim 1 , wherein said stop comprises a respective slot shaped complementarily to and configured to engage said at least one groove as said stop is installed from above said upper conveying surface and to engage said at least one groove as said stop moves between said first and second positions.

3. The conveyor of claim 1 wherein said at least one actuator is connected to said respective stop by a quick disconnect.

4. The conveyor of claim 1 comprising means for quickly connecting said stop to said at least one actuator and for quickly disconnecting said stop from said at least one actuator.

5. The conveyor of claim 1 wherein said at least one actuator comprises a fluidic actuator which is connected to a source of fluid through a flexible line.

6. A conveyor configurable in at least first stop configuration and a second stop configuration, said conveyor comprising:

two spaced apart frame members;

a plurality of rollers supported by said two spaced apart frame members, said rollers defining an upper conveying surface;

a plurality of gaps defined between said rollers;

a support disposed under said plurality of rollers, said support comprising a plurality of spaced apart actuator mounting locations, each aligned with a respective gap;

when said conveyor is configured in said first stop configuration, said conveyor comprising:

at least one actuator being disposed at a first respective one of said plurality of actuator mounting locations;

a respective connection between each said at least one actuator and said support at said first respective one of said plurality of actuator mounting locations;

a respective stop associated with each said at least one actuator;

a respective connection between said stop and its associated actuator, actuation of said at least one actuator moving said stop between a first position at which at least a portion of said stop extends above said upper conveying surface and a second position at which said stop does not extend above said upper conveying surface;

when said conveyor is configured in said second stop configuration, said conveyor comprising:

said at least one actuator being disposed at a second respective one of said plurality of actuator mounting locations;

a respective connection between each said at least one actuator and said support at said second respective one of said plurality of actuator mounting locations.

7. The conveyor of claim 6 comprising at least one respective guide associated with each actuator mounting location, said at least one respective guide configured to cooperate with said respective stop to guide said respective stop as it moves between said first and second positions.

8. The conveyor of claim 7 , wherein said at least one respective guide comprises at least one groove and at least a portion of said stop is disposed in said at least one groove as said stop moves between said first and second positions.

9. The conveyor of claim 8 , wherein said at least one respective guide comprises two spaced apart pairs of guides, and each said respective stop comprises a respective slot shaped complementarily to and configured to engage each said groove as said stop is installed from above said upper conveying surface and to engage said at least one groove as said stop moves between said first and second positions.

10. The conveyor of claim 6 , wherein said respective connection between said stop and its associated actuator is configured to be quickly disconnected and quickly reconnected.

11. The conveyor of claim 6 , wherein said respective connection between each said at least one actuator and said support at said first respective one of said plurality of actuator mounting locations and said respective connection between each said at least one actuator and said support at said second respective one of said plurality of actuator mounting locations are identical.

12. The conveyor of claim 11 , wherein said respective connection between each said at least one actuator and said support at said first respective one of said plurality of actuator mounting locations and said respective connection between each said at least one actuator and said support at said second respective one of said plurality of actuator mounting locations are configured to be quickly disconnected and quickly reconnected.

13. A apparatus for mounting moveable stops on a conveyor, said conveyor having two spaced apart frame member supporting a plurality of rollers with a plurality of gaps defined between the rollers, said plurality of rollers defining a conveying surface, said apparatus comprising:

a stop subassembly supported by said two spaced apart frame members, said subassembly comprising

first and second spaced apart frames, each said frame comprising a respective upper portion;

a first and second pair of elongated guides, each guide of said first pair being disposed on opposite sides of said first frame, each guide of said second pair being disposed on opposite sides of said second frame, each of said guide comprising outwardly opening spaced apart aligned groves disposed along the length of said guide, each respective groove of one guide being aligned with and forming a groove pair with a respective groove of the other guide of said pair;

at least one stop comprising a pair of spaced apart slots complementarily shaped and located so as to be received by a respective groove pair of said first guide pair and a respective groove pair of said second guide pair; and

a respective actuator associated with each said at least one stop, said actuator having a quick disconnect connected to said at least one stop.