Method and device for intrinsically safe redundant current supply of field devices

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9893605
SERIAL NO

14813156

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method and a device provide intrinsically safe redundant current supply of field devices with a common current-limiting resistor in the mesh of the field device, wherein the field device is connected via a connection line to field-device connection terminals of the current supply device consisting of at least two current supply units. The output voltage and/or the output current of each current supply unit is reduced as a function of the voltage across the field-device connection terminals.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • ABB SCHWEIZ AG;ABB TECHNOLOGY AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Marks, Frank Langenfeld, DE 11 23

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 13, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 13, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00