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:
Nov. 14, 1989
Filed:
Jan. 30, 1989
Keith Fawcett, Limerick, IE;
EI Company, Ltd., Shannon, IE;
Abstract
The present invention relates to a battery removal indicator for battery operated units such as smoke detectors or fire alarms. The battery removal indicator is formed by a spring loaded member which is retained in a retracted position when a battery is present and which moves to a deployed position when the battery is absent. In its deployed position, the member prevents a cover of the unit from being engaged by a latch mechanism for securing the cover in a closed position. The unlatched cover acts as a first visual indication that the battery is not present. The member is also marked with warning indicia on one or more surfaces so as to provide a second visual indication that the battery is absent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile