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:
Jun. 15, 2004
Filed:
Jun. 12, 2003
Applicant:
Inventor:
Michael J. Sullivan, Barrington Hills, IL (US);
Assignee:
Marking Specialists/Polymer Technologies, Inc., Arlington Heights, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 1/100 ;
U.S. Cl.
CPC ...
H01H 1/100 ;
Abstract
A soft tactile urethane transparent plastic membrane structure printed keyboard is disclosed which provides a soft tactile individual membrane over each separate printed indicia wherein each individual membrane structure is clear, raised, domed, visually transparent and soft to the touch. The soft tactile urethane membrane structures provide raised key tip contact means which permit keyboard operation by feel of the keyboard. The urethane plastic membrane structures, when compressed, activate respective membrane switches in an electrical control circuit.