Card Shuffling Device with Pneumatic Ejection
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Solution Overview
Problem
Existing methods for shuffling playing cards, such as manual cutting, riffle, and stripping, are time-consuming and may not ensure a truly random distribution of cards, potentially leading to unfair advantages in games.
Innovation Solution
A device with a rectangular-parallelepiped-shaped compartment that applies an impulsive force to groups of cards, ejecting them in a direction parallel to their face, achieving an effectively random distribution through a pneumatic or mechanical forcer mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cutting, riffle, and stripping methods are used to shuffle cards, then the cards can be mixed, but the process is time-consuming and may not ensure truly random distribution
Solution Approach 1:
The patent replaces manual mechanical shuffling operations with an automated mechanical system consisting of a compartment, forcer mechanism, and ejection system. The forcer applies controlled impulsive forces to groups of cards, ejecting them into the third dimension for random redistribution, thereby eliminating manual intervention and reducing shuffling time while maintaining reliability of random distribution.
Solution Approach 2:
The patent employs a forcer mechanism that utilizes pneumatic or hydraulic principles to apply intermittent impulsive forces to groups of cards. The forcer creates controlled air pressure or fluid force to eject card groups in a consistent, repeatable manner, ensuring reliable randomization without the variability introduced by manual handling.
2Productivity
If the forcer applies intermittent force to groups of cards, then the cards are ejected into the third dimension for random distribution, but the device structure becomes more complex
Solution Approach 1:
The patent divides the deck of cards into multiple groups that are processed separately by the forcer mechanism. Instead of manipulating the entire deck at once, the forcer applies force to specific groups of cards, ejecting them individually into the third dimension. This segmentation allows for simpler, more reliable force application and enables faster processing cycles.
Solution Approach 2:
The forcer mechanism operates through periodic intermittent forces rather than continuous force application. The forcer applies force in discrete pulses to different groups of cards in sequence, creating a rhythmic shuffling action. This periodic action pattern simplifies the mechanical design by using repeated cyclic motion rather than complex continuous control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device efficiently randomizes a deck of cards in approximately 15 seconds, ensuring a fair distribution that defeats card counting strategies and is accepted as random by players, thus enhancing the fairness of card games.
Implementation Method 1
A forcer applies an impulsive force to a group of cards of the deck of cards so as to eject the group of cards of the deck of cards into a third dimension
Data Source
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AI summary
A device for shuffling a deck of playing cards is described. The cards are placed in a compartment having a shape of a rectangular parallelepiped, and dimensioned so that the cards are constrained in rotation in two of the three axes. The device is oriented so that a thickness dimension of the deck is horizontal, and groups of cards of the deck of cards are ejected in a vertical direction so as to provide a spacing of between a top edge of cards at rest and a bottom edge of the cards being ejected. The time duration of the ejection process is sufficient to effectively randomize the deck of cards. The ejection of cards may be by a plurality of pistons, and the pistons may be actuated by a motor, a solenoid or by air pressure.