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:
Nov. 23, 1976
Filed:
Sep. 08, 1975
Walter M Burnside, Waukegan, IL (US);
Bally Manufacturing Corporation, Chicago, IL (US);
Abstract
In a pin ball game apparatus a Bingo-type score card having a shiftable mask plate associated therewith for changing the score value of a winning combination where the mask plate is reciprocably movable vertically in opposite directions from a center position relative to the score card by a rotatable cam connected to a lever arm supporting the mask plate, a locking mechanism associated with the lever arm which restrains the movement of the mask plate away from the center position in at least one direction, and a spring biased linkage interposed between the rotatable cam and the lever arm which permits the cam to be rotated 360.degree. while the locking mechanism restrains movement of the mask plate away from the center position in at least one direction.