[12] Patent
[11] Patent No.:GC0007649  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126498
Date of the Decision to Grant the Patent:25/Apr/2018

[21] Application No.:GC 2010-16152

[22] Filing Date:23/6/2010

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
30/6/2009
12/495.197

[72] Inventors:1- GETHMANN, Douglas P.،2- HALM, David George،3- ARNOLD, David Anthony

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

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

  

 

  

[51]IPC:
Int. Cl.: F16K 31/122, 31/163; F15B 15/14; F16F 1/12 (2006.01)

[56] Cited Documents:

-DE 42 44 080 A1 (FESTO KG [DE])16 September 1993
-US 4 809 733 A (HAWKINS HERMAN H 1051)7 March 1989
-US 6 793 194 B1 (GRINBERG JOSEPH [IL])21 September 2004
-US 3 981 479 A (FOSTER FRANK L ET AL)21 September 1976
-WO 86/04400 A1 (SUN HYDRAULICS CORP [US];CLARK RICHARD J [US])31 JuIy 1986
-EP 0 798 483 A1 (SNECMA [FR] SNECMAMOTEURS [FR]) 1 October 1997
-US 5 463 986 A (HOLLIS THOMAS J [US])7 November 1995
-US 2007/001134 A1 (LONNES STEVEN B [US])4 January 2007
 
Examiner: Eng. Fahad M. AlBaker

[54] BIASING APPARATUS FOR USE WITH ACTUATORS
[57] Abstract: Biasing apparatus for use with actuators are described. A biasing apparatusfor use with a piston actuator includes a first sleeve at least partially surrounded byand movably coupled to a second sleeve. Additionally, the biasing apparatus includesa stop to limit an amount of movement of the first sleeve relative to the second sleeveand a biasing element positioned between first and second ends of the respective firstand second sleeves to urge the first sleeve away from the second sleeve.
No. of claims: 20     No. of figures: 12


 

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