US4786056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Random number generator
Assignee: Individual
•
Filing: 1987-10-30
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Granted: 1988-11-22
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Expires: 2007-10-30
Abstract
Abstract A random number generator assembly for mixing and randomly selecting balls indicating events or numbers is described which includes a chamber for mixing the numbers and a storage device communicating therewith for storing the numbers which have been generated. The mixing chamber is constructed from transparent plastic forming an octagonal drum. Motion of the balls within the mixing chamber is provided by a blower having sharply bent blades rotated with the convex side in the direction of travel to displace air within the mixing chamber. Within the mixing chamber, a multi-planar ramp made of expanded metal serves to increase the mixing effect of the balls providing more complete and rapid randomization of the balls. A transparent plastic tube communicates with the mixing chamber and serves to store random numbers which have been generated by the passage of balls from the mixing chamber to the storage device. A photoelectric beam senses the generation of the random numbers. A counter mechanism turns the generator off when a preset number of balls have been counted.
Inventors
- 👤 Richard P. Dunnigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:51
CPC Classifications
G; G07; G07C; G07C15/00; G07C15/001
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
92 words
A random number generator comprising: a substantially transparent mixing chamber having an exit aperture; blower means disposed below a perforated floor of said mixing chamber for directing air into said mixing chamber; ramp means positioned within said mixing chamber in a predetermined relationship with said aperture for causing a plurality of objects provided with random event indicia to be propelled upwardly by displaced air from said blower means and circulated within said mixing chamber; and storage means in communication with said aperture for receiving objects exiting said mixing chamber through said aperture.
Claim 2
Dependent Claim
92 words
A random number generator comprising: a substantially transparent mixing chamber having an exit aperture; blower means disposed below a perforated floor of said mixing chamber for directing air into said mixing chamber; ramp means positioned within said mixing chamber in a predetermined relationship with said aperture for causing a plurality of objects provided with random event indicia to be propelled upwardly by displaced air from said blower means and circulated within said mixing chamber; and storage means in communication with said aperture for receiving objects exiting said mixing chamber through said aperture.
Claim 3
Dependent Claim
29 words
The random number generator of claim 1, wherein said mixing chamber comprises a drum having multi-faceted walls for increasing the level of randomness and mixing within said mixing chamber.
Claim 4
Dependent Claim
16 words
The random number generator of claim 2, wherein said ramp means comprises a perforated multi-planar incline.
Claim 5
Dependent Claim
52 words
The random number generator of claim 3, wherein said storage means comprises: a discharge chute for displaying objects exiting from said mixing chamber through said aperture; and counter means associated with said discharge chute for deactivating said blower means when a predetermined number of said objects have exited from said mixing chamber.
Claim 6
Dependent Claim
35 words
The random number generator of claim 4, wherein said blower means comprises a plurality of fan blades formed to a substantially 90° bend and rotated to present a convex surface in the direction of travel.
Claim 7
Dependent Claim
36 words
The random number generator of claim 5, wherein said storage means comprises a tube having having a first end connected around said aperture of said mixing chamber and a second end provided with a perforated cover.
Claim 8
Dependent Claim
22 words
The random number generator of claim 6, wherein said storage means is rotatably affixed to said mixing chamber at said first end.
Claim 9
Dependent Claim
27 words
The random number generator of claim 7, wherein said storage means includes scanner means for indicting the exiting of one of said objects from said mixing chamber.
Claim 10
Dependent Claim
28 words
The random number generator of claim 8, wherein said storage means further including counter means for counting the number of said objects which have exited said mixing chamber.
Claim 11
Dependent Claim
32 words
The random number generator of claim 9, wherein said storage means further includes switch means for deactivating said blower means when a preset quantity of said objects have exited said mixing chamber.
Claim 12
Dependent Claim
85 words
A random number generator comprising: chamber means for visibly containing and mixing a plurality of balls each having character indicia associated therewith; displacement means for imparting a swirling motion to said balls within said chamber means; direction control means for imparting an upward motion to said balls within said chamber means; storage means for randomly capturing and holding at least one of said balls; counter means for stopping said displacement means when a preset number of said balls have been captured by said storage means.
Claim 13
Dependent Claim
85 words
A random number generator comprising: chamber means for visibly containing and mixing a plurality of balls each having character indicia associated therewith; displacement means for imparting a swirling motion to said balls within said chamber means; direction control means for imparting an upward motion to said balls within said chamber means; storage means for randomly capturing and holding at least one of said balls; counter means for stopping said displacement means when a preset number of said balls have been captured by said storage means.
Claim 14
Dependent Claim
35 words
The random number generator of claim 11, wherein said displacement means comprises a blower further comprising a plurality of blades bent to a near 90° angle and rotated so as to present their convex face.
Claim 15
Dependent Claim
90 words
A random number generator comprising: octagonally faceted transparent plastic chamber means for visibly containing and mixing a plurality of random event indicia; convex blade blower means for imparting a swirling motion to said random event indicia; expanded metal ramp means for imparting an upward motion to said random event indicia within said chamber means; transparent plastic storage means for capturing and holding at least one said random event indicia; counter means for stopping said displacement means when a preset quantity of said balls have been captured by said storage means.
Claim 16
Dependent Claim
90 words
A random number generator comprising: octagonally faceted transparent plastic chamber means for visibly containing and mixing a plurality of random event indicia; convex blade blower means for imparting a swirling motion to said random event indicia; expanded metal ramp means for imparting an upward motion to said random event indicia within said chamber means; transparent plastic storage means for capturing and holding at least one said random event indicia; counter means for stopping said displacement means when a preset quantity of said balls have been captured by said storage means.
References Cited (Backward Citations)
US2091883A
Cited
US2203886A
Cited
US2315323A
Cited
US2385980A
Cited
US2594434A
Cited
US2668717A
Cited
DE1122421B
Cited
GB896488A
Cited
GB1015047A
Cited
US4185828A
Cited
US4508346A
Cited
WO1984000115A1
Cited
US4699382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |