3781798 is referenced by 16 patents and cites 6 patents.

Method and apparatus for mechanically reading alpha numeric symbols in the identification code of a pneumatic tire. The apparatus includes a plurality of closely spaced individually movable fingers urged by air pressure toward the surface of a tire on which such symbols are placed. Upon relative movement between the tire surface and the fingers, the individual fingers are deflected by the local topography of the symbols. The deflections are transduced by linear differential transformers connected individually to the fingers and produce deviation signals which can be communicated to conventional character recognition equipment for indication, display, or recording.The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.

Mechanical reading of tire identification symbols
Application Number
Publication Number
Application Date
December 20, 1971
Publication Date
December 25, 1973
Hinks William L
The Goodyear Tire & Rubber Company
G06k 07/04
B07C 05/34
G06K 07/04
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