Battery removal indicator
First Claim
1. A battery removal indicator for use in a battery operated unit which includes a base member, at least one battery operated device attached to said base member, and a cover hingedly mounted to said base member for rotation about a first axis, said indicator comprising spring loaded means for preventing said cover from closing and for providing a separate visual indication that a battery is not present in said unit.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
15 Claims
- 1. A battery removal indicator for use in a battery operated unit which includes a base member, at least one battery operated device attached to said base member, and a cover hingedly mounted to said base member for rotation about a first axis, said indicator comprising spring loaded means for preventing said cover from closing and for providing a separate visual indication that a battery is not present in said unit.
-
10. A battery operated smoke detector having an indicator for displaying a visual warning that a battery is not present, said smoke detector comprising:
-
a base member; a battery operated alarm device mounted to said base member; a cover pivotably mounted to said base member for rotation about a first axis; said cover having a latch for contacting an engaging device affixed to said base member; and said indicator being formed by a pivotable member rotatable about a second axis substantially transverse to said first axis, said pivotable member in its deployed position preventing said latch from contacting said engaging device. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification