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 Title: |
US5440990:
Electronic time fuze
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Wiedefeld, William G.; Clermont, FL
Peterson, Michael H.; Glendale, CA
Cote, William F.; Windermere, FL
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| Assignee: |
The Walt Disney Company, Burbank, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
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| Published / Filed: |
1995-08-15
/ 1993-09-16
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| Application Number: |
US1993000122637
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| IPC Code: |
Advanced:
F41A 19/58;
F42C 11/06;
Core:
F41A 19/00;
F42C 11/00;
IPC-7:
F23Q 7/02;
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| ECLA Code: |
F41A19/58; F42C11/06B;
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| U.S. Class: |
Current:
102/215;
Original:
102/215;
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| Field of Search: |
102/206,215,218,202.3,200
089/006,6.5
361/248,249
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| Priority Number: |
| 1993-09-16 |
US1993000122637 |
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| Abstract: |
An electronic time fuse for controlling and initiating the explosion of an explosive is provided. The fuse comprises a timing circuit, an energy storage means, and a explosion initiation means. The fuse is initially connected through a two-wire interface to a local control unit (LCU). The LCU tests the integrity of the fuse, charges the energy storage means, measures the clock accuracy of the fuse, compensates for any inaccuracy of the fuse clock, loads timing information into the fuse, and commands the fuse to begin a timing sequence toward explosion. The fuse responds to LCU commands. The fuse ignores signals present on the two-wire interface for a period of time after the command to begin the timing sequence toward explosion is given. The fuse also monitors the status of the two-wire interface and the signals present on it and resets the fuse to an inert state if any irregularities are detected.
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| Attorney, Agent or Firm: |
Hecker & Harriman ;
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| Primary / Asst. Examiners: |
Pihulic, Daniel T.;
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| Maintenance Status: |
R2 Reinstated
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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 16 claims |
We claim:
1. A method of initiating an explosion comprising the steps of:
- providing a charging current from a control means to a detonating means having a capacitor, said charging current to charge said capacitor;
- providing a start command from said control means to said detonating means;
- providing a first clock signal at a first frequency from said detonating means to said control means;
- determining said first frequency at said control means and providing a time delay signal to said detonating means based on said first frequency, said time delay signal controlling a time delay between a launch command and a detonate command;
- providing said launch command from said control means to said detonating means; providing said detonation command at said detonating means when said time delay has occurred and said detonating means is not connected to said control means; resetting said detonating means when said detonating means is connected to said control means after a portion of said time delay has expired.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 10 U.S. patent(s) that reference this one
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