David Albert Christianson

US Patent:

6616502, Sep 9, 2003

Filed:

Feb 19, 2002

Appl. No.:

10/077666

Inventors:

Elizabeth Pacza-Steim - Chicago IL 60630
David Christianson - Grayslake IL 60030

International Classification:

A63H 3300

US Classification:

446297, 446484

Abstract:

A toy with electronic sensing mechanism is disclosed. Specifically, the toy can detect the presence of an electrically conductive material and respond accordingly. Particularly disclosed is the use of modeling dough as the conductive material which allows a broad flexibility of play and response.

US Patent:

61358452, Oct 24, 2000

Filed:

May 1, 1998

Appl. No.:

9/071931

Inventors:

Randall Jon Klimpert - Wilmette IL
Ann Danielak Klimpert - Wilmette IL
David Christianson - Grayslake IL
Dieter Herbstler - Bolingbrook IL
Anne Pitrone - Tenafly NJ

International Classification:

A63H 328

US Classification:

446297

Abstract:

A toy doll includes a body having an opening simulating a mouth and first and second electrical switches, each switch being disposed proximal to the simulated mouth and activatable by an object inserted at least partially into the mouth. A speaker is attached to the body. An electrical circuit including an integrated circuit chip is electrically connected with the switches and with the speaker. A base configured as a feeding tray is disposed externally of and is detachably connected with the body. The base has three external switches electrically connected with the circuit chip. The circuit chip has a plurality of memory registers, each register storing a separate signal corresponding to a separate audio message. The chip is configured to randomly select a prompt signal from the memory registers and to transmit the stored signal to the speaker. The prompt signal prompts the user to select a specified one of the switches.