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:
Apr. 14, 1981
Filed:
Sep. 27, 1979
Edward T Holahan, Chicago, IL (US);
Burton C Meyer, Downers Grove, IL (US);
Donald A Rosenwinkel, Tinley Park, IL (US);
Marvin Glass & Associates, Chicago, IL (US);
Abstract
Practice apparatus for use in measuring azimuth angle, equivalent distance and angle of elevation of a ball that is punted, passed or kicked comprises a base including means for securing the device in fixed position on the ground or other surface. A tether line extends from the base and is connected at a free outer end with the ball which may be kicked from a tee, punted, or passed to extend and exert tension on the tether line. The angle of elevation and/or angle of azimuth of the tether line is increased or changed when the ball is kicked or thrown. The practice apparatus includes a first element for measuring and indicating the angle of elevation of the tether when the ball is moved away from a starting point by kicking or throwing, a second element for measuring the azimuth angle or direction of the path of movement of the ball and a third element for indicating the equivalent distance that the ball would be moved except for the restraint of the tether line.