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. 24, 1985
Filed:
Apr. 19, 1983
Applicant:
Inventors:
Jean-Paul Ballerin, Chatou, FR;
Alexandre Georgelin, Bois-Colombes, FR;
Edmond Ballerin, Chatou, FR;
Assignee:
Faiveley Entreprises, Saint-Ouen Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ; F41B / ;
U.S. Cl.
CPC ...
124 78 ; 124 / ; 124 / ; 124 81 ; 273 30 ;
Abstract
Balls such as table tennis balls or tennis balls are continuously fed to two pairs of adjacent flanged rollers of a ball-throwing head by a blower and two transfer ducts. Balls hit by the player are collected by a net and a trough, then fed back to the head. The rollers have separately variable speeds of rotation, a gap being provided between each pair of rollers and adapted to the diameter of the balls. The balls are directed alternately into each transfer duct, the opening of which is located opposite to each gap.