The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1979
Filed:
Mar. 08, 1977
Applicant:
Inventors:
Toshihiko Kobayashi, Mitaka, JP;
Tetsusaburo Kamibayashi, Niza, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
178 19 ;
Abstract
A co-ordinate plate for a co-ordinate reader, which utilizes delays of oscillation waves in a magnetostrictive material. The co-ordinate plate is composed of a thin plate of magnetrostrictive material having a co-ordinate plane and similar propagation characteristics of magnetostrictive oscillation waves in directions of at least two co-ordinate axes of the co-ordinate plane, two exciting coils for producing magnetostrictive oscillation in the thin plate of magnetostrictive material in one and the other of co-ordinate directions of the co-ordinate plane, and flux keepers for shielding magnetic fluxes emanating from the exciting coils.