| 摘要 |
A self-contained mailbox signal device assembly is provided which is selectively clamp-mountable against the exterior surface of a mailbox and which is provided with a gravity actuated pivotal signal arm. The pivotal signal arm is weighted at one end and is provided with a flag indicator signal portion at the other end thereof. The pivotal signal arm is adapted to be maintained in a substantially horizontal position when the weighted end thereof is supportably engaged by a support arm extension provided in the closed door of the mailbox. When the door of the mailbox is opened, the weighted portion of the signal arm disengages from the support arm extension and moves in a downward arc in response to gravitational pull. This causes the signal arm to pivotally move into its upright signal position with the weighted portion down and the indicator signal portion up so as to indicate to a remote observer that the mailbox has been opened and presumably mail has been deposited therein.
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