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:
Jul. 22, 1986
Filed:
Jul. 03, 1985
Alan Frank, Pittsburgh, PA (US);
Other;
Abstract
A random number generating device for randomly selecting one of a plurality of suspendable balls which are stirred and circulated in a chamber by an upflowing fluid stream. Upon termination of fluid flow one of the balls falls downwardly through a relatively narrow bottom trough into a lower pocket having a transparent wall. The device is provided with steeply sloping inclined facing sidewalls flaring outwardly from said trough and sufficiently steep so that upon termination of fluid flow non-selected balls are out of contact with the selected ball as it falls from the trough into the pocket. Thereby, any jamming of non-selected balls occurs at an elevated level and does not prevent a single, randomly selected ball from entering the pocket at the end of each cycle.