Title: Mailbox signalling device

Abstract: A device for signalling when a remote receptacle such as a rural mailbox has been opened. The device includes a switch that is closed by the opening of the box, a relay actuated thereby, a hold-in circuit established by the relay, a signalling means such as a buzzer or a light or both that is energized when the relay is actuated and a reset switch in the hold-in circuit for disabling the relay and the signalling means.

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Inventors: Engel, George W. (Toms River, NJ, US)

Application Number: 812750
Filing Date: 1977-07-05
Publication_date: 1979-07-31
Assignee:
Primary Class(es): 340/569
Other Classes:
US Patent Ref:

3261010	Jul, 1966	Kardel	340/283.
3935994	Feb, 1976	Darvishian	390/281.

Other Refs: 13817472547482

Nov, 1963	FR
Apr, 1977	DE

Primary Examiner: Swann, III, Glen R.
Assistant Examiner:
Attorney: Leonard; Henry K.