Patent ID: 7310882

Claim:
Measuring device for measuring the length, speed, or length and speed of a moving object in relation to a structural component, said measuring device comprising: a measuring wheel; and a rotary encoder, such that the measuring wheel is coupled to the encoder shaft of the rotary encoder at a precise angle of rotation, and the measuring wheel, along with a contact surface of the measuring wheel, can be positioned on the object in such a way that the axis of the measuring wheel (X direction) runs basically perpendicular to the direction of motion (Z direction) of the object, and the measuring wheel and the rotary encoder are elastically mounted on the structural component in a direction (Y direction) that is basically perpendicular to the axis of the measuring wheel (X direction) and to the direction of motion of the object (Z direction), wherein the measuring wheel and the rotary encoder are positioned on an elastic arm that exhibits a first leg and a second leg, the elastic arm is secured to the structural component with the end of the first leg, the measuring wheel and the rotary encoder are attached to the end of the second leg, and the first leg can be deflected in what is essentially the Y direction and the second leg can be deflected in what is essentially the X direction, wherein the first leg and the second leg of the elastic arm are designed as elastic blades, and wherein the elastic blade of the second leg is positioned at essentially a right angle to the free end of the elastic blade of the first leg.