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:
Oct. 25, 1994
Filed:
Oct. 12, 1993
Applicant:
Inventors:
Python V Anghelo, Chicago, IL (US);
Raymond J Czajka, Hometown, IL (US);
Assignee:
Williams Electronics Games, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63F / ;
U.S. Cl.
CPC ...
2731 / ; 2731 / ; 2731 / ; 446168 ;
Abstract
The ramp consists of a wire rail formed as a helix. The rail extends between a first elevation where the ball enters the ramp to a second, lower elevation where the ball exits the ramp. A straight rail extends through the center of the helical rail for the length thereof. The helical rail is dimensioned such that the distance between it and straight rail is less than the diameter of the ball. As a result, the ball will contact both the straight rail and helical rail simultaneously as it rolls down the helical rail by the force of gravity.