[12] Patent
[11] Patent No.:GC0007646  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126460
Date of the Decision to Grant the Patent:25/Apr/2018

[21] Application No.:GC 2013-25150

[22] Filing Date:14/8/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
14/8/2012
61/683,089

[72] Inventor: SEBERGER, Stephen G.

[73] Owner: FISHER CONTROLS INTERNATIONAL LLC, 205 South Center St., Marshalltown, Iowa 50158, USA

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: G05B 19/042 (2006.01)

[56] Cited Documents:

-US 5184122 A (Decious et al.) February 1993
-US 20020179720 A1 (Liva et al.) December 2002
-US 20060233204 A1 (Pomaranski et al.) October 2006
-US 20070083275 A1 (Law et al) April 2007
-US 20080019264 A1 (Lafleur et al.) January 2008
-US 20080126665 A1 (Burr et al.) May 2008
-US 20090077275 A1 (Zhang, Chaoyang) March 2009
-US 20100185857 A1 (Neitzel et al.) July 2010
-US 20120043938 A1 (Swenson et al) February 2012
 
Examiner: Eng. Saleh M. AlAqil

[54] CONTROL SIGNAL PROTECTION DEVICE
[57] Abstract: A control signal protection device having a first operational mode and a second operational mode includes a first terminal pair that connects the signal protection device to a control system and a second terminal pair that connects the converter to a field device. The control system provided a control signal to the control system protection device. The control signal device further includes a power storing element for temporary accumulation of electric energy and a switching circuit for controlling operational mode of the signal protection device. Electric energy is stored in the power storing element in the first operational mode. Electric energy stored in the power storing element is supplied to a positive terminal in the second terminal pair in the second operational mode.
No. of claims: 18     No. of figures: 3


 

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