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. 25, 1985
Filed:
Oct. 05, 1983
Applicant:
Inventors:
Carl V Leunig, Glenmont, NY (US);
Michael F Susi, Windsor, CT (US);
Assignee:
Tex-Tech Industries, Middletown, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73147 ; 73105 ; 7343 / ;
Abstract
An apparatus and device for evaluating the surface roughness of a tennis ball or other objects. The object is placed in flowing gas and the drag force applied on the object is measured. By repeating the procedure with objects having different surface roughness a cross-reference table is developed between drag force and surface roughness. The apparatus comprises a scale supporting the object. The object is placed in a tube and gas is blown through the tube past the object, while the drag force on the object is measured by the scale.