초록 ▼

A remote solar powered radio frequency transmitter assembly and radio receiving and signalling system to indicate delivery of mail. The transmitter means is powered by a rechargeable battery system which is normally recharged by solar cells located on the transmitter means housing. The transmitter m

A remote solar powered radio frequency transmitter assembly and radio receiving and signalling system to indicate delivery of mail. The transmitter means is powered by a rechargeable battery system which is normally recharged by solar cells located on the transmitter means housing. The transmitter means comprises an FM radio transmitter operating in the 49 Mhz band, with a signal strength sufficient for providing an alarm signal to receive at least 4,200 feet distant over unbroken terrain. Upon opening of the mailbox door approximately 30 degrees (30°), a switch initiates a six (6) second operation of the transmitter means. A receiver is provided to detect the radiated signal, and to energize visual and audible signals in response thereto. Ten position DIP switches are provided at both transmitter means and receiver to vary the frequency of operation so as to minimize or eliminate interfering signals. The transmitter means is secured to the mailbox by a single attachment post. A jack plug and flexible cord are provided to connect the transmitter means and the switch. The switch is provided with a flat backing plate having a double sided adhesive for ease of installation. The audible alarm at the receiver comprises a digitally generated musical tune. The musical tune automatically stops after about 20 seconds, unless the receiver is reset sooner. Reset of the receiver turns off both the musical tune audible alarm and the flashing light visual alarm.

대표청구항 ▼

An automatic system for signalling arrival of mail, said signal system for use with a mailbox of a type comprised of an elongated container having a bottom, sidewalls, a rear end, and an open end, said open end having attached thereto a door, said door being outwardly pivotable, manually movable, an

An automatic system for signalling arrival of mail, said signal system for use with a mailbox of a type comprised of an elongated container having a bottom, sidewalls, a rear end, and an open end, said open end having attached thereto a door, said door being outwardly pivotable, manually movable, and normally closed, said signal system comprising in combination: (a) a transmitter assembly for placement at said mailbox, comprising: (i) radio-frequency transmitter means, said transmitter means including high efficiency thin film solar cells, said solar cells adapted to collect sunlight falling thereon and to generate a direct-current output therefrom, said transmitter means also including direct-current storage means adapted to receive said direct current output from said solar cells and to store electrical energy in response thereto; and (ii) a transmitter housing adapted to enclose said transmitter means; and (iii) switch means internally mounted on said floor, said switch means electrically connected to said transmitter means, said switch means responsive to angular displacement of said door by an angle Alpha (a