1977-06-02
1978-02-14
Grieb, William H.
35 9D, G09B 706
Patent
active
040730689
ABSTRACT:
A teaching device having a base member with a metallic sheet thereon and a power source and indicator lamp assembly electrically connected to the metallic sheet. A clip is provided on the base member, also connected to the power source, and spaced from the metallic sheet. A question and answer folder is mounted on the base member with the clip in electrical connection with a metallic foil which is part of the question and answer folder. The question and answer folder has a control opening in registration with a correct answer indicia whereby finger pressure on the correct answer indicia causes an electrical connection to be made between the metallic foil of the question and answer sheet and the metallic sheet on the base member to complete the electrical circuit to the indicator lamp. The question and answer folder is openable so as to be easily mounted and electrically connected to the contact member of the base member and the portions of the question and answer folder are connected together so as to always be in registration with each other.
REFERENCES:
patent: 1881242 (1932-10-01), Prentice
patent: 3106027 (1963-10-01), Thelen
patent: 3562927 (1971-02-01), Moskowitz
patent: 3763574 (1973-10-01), Rose
patent: 3795989 (1974-03-01), Greenberg et al.
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