U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Object counter and identification system

Patent 5757876 Issued on May 26, 1998. Estimated Expiration Date: Icon_subject February 7, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Chip structure
Patent #: 4026309
Issued on: 05/31/1977
Inventor: Howard

System for monitoring the movement of money and chips on a gaming table Patent #: 4755941
Issued on: 07/05/1988
Inventor: Bacchi

Inventors

Assignee

Application

No. 795143 filed on 02/07/1997

US Classes:

377/7, Coins377/14, Where the different categories represent monetary amounts (e.g., wages, charges)377/24Dimension

Examiners

Primary: Wambach, Margaret Rose

Attorney, Agent or Firm

International Class

G03M 007/00

Abstract

A system for counting the number of objects of known thickness in a stack and identifying the objects by their color in which an ultrasonic sensor is mounted at a known distance from a reference point that defines the beginning of the stack. The ultrasonic sensor is operated to measure the round trip transit time of ultrasonic energy reflected back from the closest object in the stack and the number of objects in the stack is calculated on the basis of the known distance and the round trip transit time. A color sensor senses the color of at least one object in the stack to identify the object. In a casino application where the objects are chips of known monetary value, the value of the chips in the stack can be calculated.

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