Patent · US Active

Automatic doorbell driver

US7429924B2 · kind B2 · utility

113Cited by

12References

19Claims

0Family size

Inventors

Peter Langer · Munich, DE
Douglas C. Cinzori · Dearborn, US

Key dates

Filing date	Nov 13, 2006
Grant date	Sep 30, 2008
Priority date	—
Expiry date	Jan 17, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG08B3/10
WIPO fieldControl
WIPO sectorInstruments

Abstract

An automatic doorbell driver that utilizes the power, wiring, and primary load of a conventional doorbell system. The automatic doorbell driver comprising coupling means for coupling the automatic doorbell driver to the conventional doorbell system; power supply means for supplying power to the automatic doorbell driver; sensing means for sensing an object in a proximity zone; and switching means responsive to the sensing means for coupling power to, and thereby controlling the energization and de-energization of, the primary load of the conventional doorbell system; whereby the automatic doorbell driver can easily convert the conventional doorbell system into an automatic doorbell system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.