Patent ID: 6377364
Filing Date: 2002-04-23
Classification: F16H,H04N

Abstract:
In a document scanner which includes a housing and a belt driven moveable document scanning carriage in said housing, a belt tensioner comprising:a) a tensioner base attached to said scanner housing for movement about a first pivot axis, said base being moveable in a plane substantially parallel to the direction of movement of said carriage; b) a belt tensioner pulley mounted on said base for rotation about a second axis parallel to and spaced from said first axis, said pulley being engageable with a carriage drive belt; and c) a spring affixed to said base and to said housing for biasing said base in a direction to tension said belt; said base and said housing having first engageable means for retaining said base relative to said housing in a belt installation position and second engageable means for retaining and limiting movement of said base relative to said housing in a belt tensioning position, said base being moveable with respect to said housing along said first axis to disengage said first and second engageable means to permit pivotal movement of said base relative to said housing between said positions and to a spring removal position.