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 Title: |
US5763812:
Compact personal rail gun
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Collins, Galen; San Jose, CA 95148
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| Assignee: |
None
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| Published / Filed: |
1998-06-09
/ 1995-10-30
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| Application Number: |
US1995000544988
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| IPC Code: |
Advanced:
F41B 6/00;
Core:
more...
IPC-7:
F41F 1/00;
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| ECLA Code: |
F41B6/00;
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| U.S. Class: |
Current:
089/008;
124/003;
Original:
089/008;
124/003;
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| Field of Search: |
089/008
124/003
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| Priority Number: |
| 1995-10-30 |
US1995000544988 |
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| Abstract: |
A compact bearing ball, or rail, gun to magnetically accelerate ferro-magnetic BBs is disclosed. The gun comprises a main board containing a channel sized to allow smooth passage of a BB, a straight portion of that channel forming a barrel terminating at an edge of the main board. A plurality of wire coils are disposed perpendicular to the axis of the barrel collinear with that axis. Driver circuitry for inducing in the plurality of wire coils is provided to ensure a synchronized generation of magnetic fields in individual ones of the wire coils to accelerate ferro-magnetic BBs disposed within the channel of the main board through the channel and out of the barrel. In a preferred embodiment, the channel has a loading segment substantially perpendicular to the barrel for aligning ferro-magnetic BBs prior to acceleration through the barrel, along with a magnet at the intersection of the loading segment and the barrel for positioning a BB co-centric with the axis of said barrel prior to acceleration.
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| Attorney, Agent or Firm: |
Jones, Allston L. ;
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| Primary / Asst. Examiners: |
Johnson, Stephen M.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 15 claims |
What is claimed is:
1. A compact rail gun to electro-magnetically accelerate ferro-magnetic balls, said gun comprising:
- a main board containing a channel sized to allow smooth passage of individual ones of said ferro-magnetic balls, a straight portion of said channel comprising a barrel, said straight barrel having a central axis;
- a plurality of wire coils disposed perpendicular to said axis of said barrel, said wire coils all having centers substantially collinear with said axis of said barrel; and
- driver circuitry to sequentially induce in said plurality of wire coils a magnetic field in individual ones of said wire coils to accelerate individual ones of said ferro-magnetic balls disposed within said channel of said main board through and out of said barrel, wherein said driver circuitry comprises:
- a coil driver circuit connected to said controller comprising a plurality of high side drivers and a plurality of low side drivers, said high side drivers and said low side drivers disposed to create an array of circuit nodes, each of said circuit nodes being connected to a distinct one of said wire coils;
- an electrical energy storage element connected to said wire coils through said high side drivers;
- an electrical charger connected to said controller and to said electrical energy storage element to charge said electrical energy storage element; and
- a trigger actuator connected to said controller to initiate acceleration of said ball through said barrel.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 7 U.S. patent(s) that reference this one
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