The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2002
Filed:
Aug. 15, 1997
Paul G. Angott, Bloomfield Hills, MI (US);
Thomas G. Xydis, Ann Arbor, MI (US);
Dimango Products Corporation, Brighton, US;
Abstract
An apparatus for activating a doorbell chime and for remotely controlling an auxiliary doorbell chime includes a push button unit responsive to manual actuation for activating the doorbell chime and generating a radio frequency wave and a remote unit responsive to the radio frequency wave for generating an auxiliary acoustic frequency wave. The push button unit has a manually actuated switch assembly with a first pair of normally open switch contacts adapted to be connected in series with the doorbell chime and a source of electrical power and a second pair of normally open switch contacts, a radio frequency transmitter connected in series with the second pair of switch contacts for generating a radio frequency output signal and a first antenna connected to the transmitter and responsive to the radio frequency output signal for generating the radio frequency wave. The remote unit has a second antenna responsive to the radio frequency wave for generating a radio frequency input signal, a radio frequency receiver connected to the second antenna and responsive to the radio frequency input signal for generating a generator activation signal, and an acoustic generator connected to the receiver and responsive to the generator activation signal for generating the auxiliary acoustic frequency signal. The acoustic generator can be a speaker and the push button unit can include a power supply connected across the first pair of normally open switch contacts for receiving charging current and connected to power the radio frequency transmitter.