The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Jun. 30, 2009
Douglas P. Gethmann, Gladbrook, IA (US);
David George Halm, Haverhill, IA (US);
David Anthony Arnold, Marshalltown, IA (US);
Douglas P. Gethmann, Gladbrook, IA (US);
David George Halm, Haverhill, IA (US);
David Anthony Arnold, Marshalltown, IA (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
Biasing apparatus for use with actuators are described. A biasing apparatus for use with a piston actuator includes a first sleeve at least partially surrounded by and movably coupled to a second sleeve. Additionally, the biasing apparatus includes a stop to limit an amount of movement of the first sleeve relative to the second sleeve and a biasing element positioned between first and second ends of the respective first and second sleeves to urge the first sleeve away from the second sleeve.