Patent attributes
A lockable handle assembly, having an operating handle rotatably mounted on a frame, with a bore therein, having an axis extending laterally, a blocking bolt slideably mounted in the handle, one end of the bolt being slideable into a strike in the frame, a drum rotatably mounted in the bore, with a second end of the bolt in contact with the drum so that rotation of the drum moves the bolt into and out of the strike, a lateral hole through the handle and passing through the bore, the drum having a throughhole therein coaxial with the lateral hole in the handle when the drum is positioned with the bolt in the strike, so that a bar extending through both the throughhole in the drum and the lateral hole in the handle prevents rotation of the drum to maintain the bolt is the strike thereby preventing rotation of the handle.