05449173 is referenced by 592 patents and cites 4 patents.

According to the present invention, a wildcard symbol is provided at a stop position of one of the reels in a typical reel-type slot machine. In addition to the usual spin and payoff cycle of such a machine, the appearance of the wildcard on the pay line is used to trigger a supplemental pay off under certain circumstances. During the supplemental pay off sequence, the reel on which the wild symbol appears is caused to shake or jitter while coins fall into the trough as if money were being shaken off a tree.

Title
Reel-type slot machine with supplemental payoff
Application Number
8/311863
Publication Number
5449173
Application Date
September 26, 1994
Publication Date
September 12, 1995
Inventor
William A Gwiasda
Chicago
IL, US
Alfred Thomas
Chicago
IL, US
Agent
Rockey Rifkin and Ryther
Assignee
WMS Gaming
IL, US
IPC
G07F 17/34
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