BRUSHLESS DC MOTOR STARTS FOR A BARRIER FREE MEDICAL TABLE

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120062011A1
SERIAL NO

12878321

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A boot-strap capacitor pre-charge algorithm prevents unwanted motions in an examination table using a brushless direct current motor. The motor is supplied with power by a motor drive circuit which includes a high-side transistor coupled to a high-side gate driver, a low-side transistor coupled to a low-side gate driver, and a boot-strap capacitor coupled with the high-side gate driver. A control panel is provided that communicates with a motor controller. When the motor controller receives an indication that the motor is to be started, the motor controller activates a low-side gate driver to switch on the low-side transistor, thereby causing the boot-strap capacitor to charge. The motor controller then deactivates the low-side gate driver to switch off the low-side transistor and activates the high-side gate driver to switch on the high-side transistor, causing a voltage to be supplied to a stator of the first motor and/or second motor.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MIDMARK CORPORATION60 VISTA DRIVE VERSAILLES OH 45380

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hyre, Rodney Versailles, US 3 31
Jones, Chris Fort Wayne, US 109 2334

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation