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:
Dec. 31, 1985
Filed:
Jun. 14, 1984
Raymond L Mortvedt, Santee, CA (US);
Ektelon, San Diego, CA (US);
Abstract
A steel tubular frame design for racquetball racquets, has a varying cross-sectional structure. This structure gives strength in the lower portion of the racquet so as to reduce the torsional and flexional movements of the frame in that area and has a different cross-sectional area in the upper portion of the racquet where flexibility is needed, providing this flexibility in a continuous one-piece racquet. The invention is characterized by a four-sided peanut-shaped steel tube that has convex corners and two concave sides on the long sides. The convexity and concavity varying at different points throughout the racquet. The racquet frame is of a quadraform/wishbone configuration and is throatless.