Tracy R Schwenk

US Patent:

61442585, Nov 7, 2000

Filed:

Mar 27, 1998

Appl. No.:

9/049751

Inventors:

Tracy R. Schwenk - Hallandale FL

International Classification:

H03F 330

US Classification:

330296

Abstract:

There is provided an audio power amplifier having an output DC isolated from ground between two capacitors which are connected in series across a bias potential. The bias potential may be generated from common AC line currents by a simple bridge rectifier without the need for a bulky power supply transformer. The amplifier is DC isolated from the input signal, and hence from ground, by a balun or other small-signal transformer. Feedback is provided to compensate for ripple appearing on the bias potential.

US Patent:

20170305340, Oct 26, 2017

Filed:

Apr 25, 2016

Appl. No.:

15/137429

Inventors:

Sandra Rose - Cheektowaga NY, US
Tracy Schwenk - Ft. Lauderdale FL, US

International Classification:

B60Q 9/00
B60N 2/00
B60R 22/48
B60R 22/10
B60R 22/48
B60R 22/48

Abstract:

A safety alert system includes a child seat that may be positioned within a vehicle. The child seat has a plurality of belts and each of the belts may restrain a child in the child seat. A remote unit may be retrofitted to a dome light of the vehicle. The remote unit generates an alarm sequence when a door of the vehicle is opened. A base unit is removably coupled to the belts on the child seat and the base unit is in electrical communication with the remote unit. The base unit emits an audible alarm when the remote unit generates the alarm sequence. Thus, the base unit may prevent the child from being inadvertently left unattended in the vehicle.