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:
Feb. 02, 1993
Filed:
May. 18, 1990
Salvadore J Calabrese, Clifton Park, NY (US);
Henry A Scarton, Troy, NY (US);
S Frank Murray, Clifton Park, NY (US);
Christopher M Ettles, Glenmont, NY (US);
Warren C Kennedy, Feura Bush, NY (US);
Saim Dinc, Troy, NY (US);
Bessem Jlidi, Troy, NY (US);
William Strong, Stamford, CT (US);
Renselaer Polytechnic Institute, Troy, NY (US);
Steinway Musical Properties, Inc., Waltham, MA (US);
Abstract
A piano key cover is formed of synthetic material pigmented to resemble natural ivory and having a top playing surface with a random orientation of peak-to-valley texture and a multiplicity of fine pores replicating natural ivory. The key cover is formed by providing a mold, engraving a surface of the mold with a randomly-oriented pattern of peak-to-valley texture replicating natural ivory, placing in the mold a composition of suitable synthetic material pigmented to resemble natural ivory and filler, the filler having the characteristic of being removable from a molded article by further treatment, forming the piano key cover within the mold, and treating the piano key cover to remove the filler thereby causing the surface of the paino key cover to define a plurality of fine pores replicating the surface of natural ivory. A piano including the key cover of the invention, and formed by the above method, is also described.