forwarded for [email protected]....  Jim

____________________Forward Header_____________________
Subject:    FW: Protection for Revolving Drum
Author: Israel Yeshurun <[email protected]>
List-Post: [email protected]
Date:       3/2/00 6:59 PM




>       Hello  group members ! 
> 
>      I  am looking for a safety device intended for protection against an
> Hazardous Revolving Drum. The drum is enclosed by a protective enclosure
> that is equipped with an access door.    I can not use the approach (that
> I think is taken by  Washing Machines manufacturers ?)  of using a time
> delay solenoid for locking the access door until the drum has stopped.
> 
>       I would expect the desired device to rely upon measuring of the drum
> revolving speed and compare it to a predetermined (low enough) speed
> value.   If the measured speed is low enough the device will  operate a
> solenoid that will allow the operator to open the  door and get access to
> the drum.     
> 
>    Probably a magnet or other component should be attached to the drum
> surface for this purpose.
> 
>     And, very Important,  we need the device to have safety approvals:
> BSI or VDE or TUV, UL etc.
> 
>             Many thanks for any contribution !
> 
>  Best Regards       Israel Yeshurun,     Product Safety Engineer.  Scitex
> Corporation,   Israel.


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