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. 20, 1987
Filed:
Aug. 20, 1984
Rolland R Roots, St. Louis, MO (US);
Killark Electric Manufacturing Company, St. Louis, MO (US);
Abstract
A remote signaling box uses no glass or breakable parts. The signal box has an unbreakable door that protects a sliding panel and activator which constrains the internal alarm switch. When the door is closed, a foolproof interlock in the sliding panel prevents functioning of the switch. The sliding panel has an opening so that when it is pulled down a spring-loaded activator is released into the opening which allows the internally contained spring-loaded switch to function. No replacement parts are required after the box has been operated. A two-step operation is required for alarming to prevent inadvertent activation. The first step is to open the door which removes the foolproof interlock from the sliding panel. The second step is to pull down the sliding panel. The device is easily reset by moving the sliding panel to its original position and closing the door.