The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1995
Filed:
Jul. 23, 1993
Steven J Bierend, Santa Maria, CA (US);
Clyde L Tichenor, Fillmore, CA (US);
Irwin Ginsburgh, Newhall, CA (US);
Other;
Abstract
An aerosol spray can (12) that can only be operated when connected to an a-c utility power source provided by a power cord (22) that includes a power-line activator (30). Thus, the use of an aerosol spray can (12) to spray graffiti is prevented or at least minimized. The can (12) is modified by attaching to its upper section (14) a valve attachment port (16) to which is attached a lower fluid port (86) located on a slide and twist valve (80). The valve (80) also includes an upper fluid port (84) having a check valve (88) that opens when a standard spray head (26) is depressed and a permanent magnet piston (90) having a fluid passage bore (96). When no power is applied, a compression spring (94) positions the piston (90) with the bore (96) misaligned in both a radial and longitudinal position that prevents the passage of the fluid. Conversely, when power is applied, an electromagnet (36) in the power-line activator (30) aligns the fluid passage bore (96) with the upper and lower fluid ports (84,86) to allow fluid to pass when the spray head (26) is depressed.