Educational device

• US 3,314,165 A
• Filed: 07/06/1964
• Issued: 04/18/1967
• Est. Priority Date: 07/06/1964
• Status: Expired due to Term

• Current Assignee: Peter K. Shreck, Thomas B. Howe
• Original Assignee: Peter K. Shreck, Thomas B. Howe
• Inventors: Shreck, Peter K., Howe, Thomas B.
• Application Number:
  US04/380,255
• Time in Patent Office: 1,016 Days
• US Class Current: 434/343
• CPC Class Codes: G09B 19/025 with electrically operated apparatus or devices

Claims

1. AN EDUCATIONAL DEVICE COMPRISING A HOUSING, MEANS ON THE HOUSING TO RECEIVE A MASTER CARD, MEANS ON THE HOUSING DEFINING A PLURALITY OF SPACES ON THE HOUSING TO RECEIVE INDIVIDUAL CHARACTER CARDS, AN INDICATING DEVICE FOR EACH OF THE SPACES NORMALLY OCCUPYING A FIRST POSITION BUT MOVABLE TO A SECOND POSITION, A MASTER CARD TO BE RECEIVED IN SAID FIRST NAMED MEANS, A PLURALITY OF INDIVIDUAL CHARACTER CARDS TO BE RECEIVED INS AID SPACES, THE MASTER CARD BEING FORMED WITH SPACED KEYING OPENINGS AND THE CHARACTER CARDS BEING FORMED WITH COMPLEMENTARY KEYING PROJECTIONS AT ONE EDGE THEREOF NORMALLY TO ENGAGE THE MASTER CARD AND BLOCK FULL INSERTION OF THE CHARACTER CARDS INTO THE SPACE BUT ENTERING THE KEY ING OPENINGS TO PERMIT SUCH INSERTION WHEN THE CORRECT CHARACTER CARD FOR A GIVEN SPACE IS INSERTED IN THAT SPACE, AND A PROJECTION ON EACH OF THE CHARACTER CARDS OPERATIVE WHEN THE CHARACTER CARD IS FULLY INSERTED INTO A SPACE TO MOVE THE INDICATING DEVICE FOR THAT SPACE FROM ITS FIRST TO ITS SECOND POSITION AND MEANS ON THE MASTER CARD TO MOVE CERTAIN OF THE INDICATING DEVICES FOR WHICH THERE ARE NO CORRESPONDING CHARACTER CARDS IN THE SOLUTION OF A PROBLEM FROM THEIR FIRST TO THEIR SECOND POSITIONS.