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 Title: |
US5675318:
GRAFFITI PREVENTION APPARATUS
[ Derwent Title ]
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Country:
Kind: |
US United States of America
A PATENT [FROM BEGIN UNTIL END 2000] or PATENT ISSUED AFTER 1ST PUB. WITHIN THE TVPP i
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| Inventor: |
HUNT, JR., HENRY C.; United States of America
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| Assignee: |
HUNT, JR.; HENRY C. United States of America
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| Published / Filed: |
1997-10-07
/ 1996-05-06
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| Application Number: |
US1996000642873
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| IPC Code: |
Advanced:
G08B 15/00;
Core:
more...
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| ECLA Code: |
G08B15/00;
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| U.S. Class: |
340/540;
340/541;
222/061;
222/153.11;
222/402.1;
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| Priority Number: |
| 1996-05-06 |
US1996000642873 |
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| Abstract: |
A system of components for preventing the application of graffiti to property includes one or more sensors and a signal transmitter at or near the surface to be defaced, and signal receiving means for actuating a mechanism in the spray apparatus or at the surface to be protected which will enable prevention of the surface targeted for defacement. One embodiment of the invention includes a signal receiver in the spray canister which actuates an electromagnet to move a plug in the marking material delivery tube to a flow blocking position. A second embodiment of the invention includes a signal receiver in the spray canister coupled to a rotatable magnet for rotating the upper end of the delivery tube away from the spray nozzle thereby breaking the path through which the marking material travels from the spray apparatus to the target surface. A third embodiment of the invention provides for the creation of an electromagnetic field at the targeted surface, and the mixing of the marking material (either by the "paint" manufacturer or afterwards) with a magnetic material so that when sprayed at the surface, the marking material is repelled.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
| Gazette date |
Code |
Description (remarks) List all possible codes for US |
| 2001-12-11 |
FP - |
Expired due to failure to pay maintenance fee
( 2001-10-07 )
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| 2001-10-09 |
LAPS - |
Lapse for failure to pay maintenance fees
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| 2001-05-01 |
REMI |
Maintenance fee reminder mailed
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