Patent ID: 8814215
Filing Date: 2014-08-26
Classification: G09B,Y10S

Abstract:
1. In combination: a) a generally planar response form having a generally flat surface with a length and width and an answer area bearing a plurality of answer blanks in a first plurality of rows spaced in a lengthwise direction upon which a respondent makes marks to indicate a response; and b) a response form security device comprising: a sleeve having a length and width, a blocking wall, sides spaced in a widthwise direction, and a top and bottom spaced in a lengthwise direction, the sleeve and response form configured so that the sleeve slidably receives the flat surface of the response form with the sleeve and response form operatively engaged wherein the lengths of the response form and sleeve are aligned and the blocking wall covers the flat surface and blocks visual access to a plurality of answer blanks that the blocking wall overlies; and an access window formed in the sleeve and through the blocking wall through which visual access by the respondent is given to less than all of the rows of answer blanks over which the access window aligns with the sleeve and response form operatively engaged, the operatively engaged sleeve and response form configured to be guidingly movable selectively lengthwise relative to each other so that visual access to different rows of answer blanks in the first plurality of rows of answer blanks is given upon which marks are made through the access window to indicate a response while the blocking wall covers a plurality of other rows of answer blanks in the first plurality of rows of answer blanks upon which a respondent makes marks, the sleeve having a length that is substantially greater than the length of the response form, the sleeve and response form configured so that the plurality of other rows of answer blanks with marks thereon that are blocked are sufficient that it is not possible to observe any repeatable pattern of marks in the other rows of answers blanks.