Patent ID: 9107497
Filing Date: 2015-08-18
Classification: A47B,A47F

Abstract:
1. An automatic book-end system for shelves, comprising: a shelf including a shelf bottom, at least one end wall extending normal to the shelf bottom and first and second roller chains disposed on the shelf bottom, parallel to and proximate opposing side edges of the shelf bottom; a book-end housing movably connected to the shelf, the book-end housing including a book contacting surface, a battery, an electric circuit powered by the battery, a pair of electric motors operably connected to the electric circuit, and first and second chain sprockets operably connected to the electric motors, each of the first and second roller chains being configured to engage a respective one of said first and said second chain sprockets; a limit switch disposed on the book contacting surface of the book-end housing, the limit switch being operably connected to the electric circuit; and wherein responsive to a contact state of the limit switch, the electric circuit actuates or deactuates the motors to coordinate automatic repositioning of the book-end housing along the shelf bottom.