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:
Jun. 16, 1998
Filed:
Jul. 16, 1996
James A Mongeau, Marlboro, MA (US);
Space Age Electronics, Inc., Marlboro, MA (US);
Abstract
An alarm guard for use with an alarm signaling device that is installed to meet Underwriter laboratories (UL) 1971 requirements and that includes a chassis mountable to a surface and a visual signaling element mounted on an outer face of the chassis and extending therefrom to be activated to indicate a hazardous condition. The alarm guard includes a mesh chassis guard enclosing at least four sides of the chassis and a visual indicator guard including a plurality of guard elements mounted to the chassis guard adjacent the visual signaling element. The guard elements may be comprised of straight and curved segments and extend from the outer face of the chassis and are spaced apart along the vertical and horizontal faces of the visual signaling element to provide vertical and horizontal openings sufficient to provide a required emitted light pattern in each plane of light emission. The extension of each guard and the separation between adjacent guard elements are selected to protect the visual signaling element from a predetermined generally spherical object. The chassis guard may extend over at least a portion of the outer face of the chassis outside of the visual signaling element and a segments of the guard element may extends across the outer face of the chassis be attached to the chassis guard.