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:
Jul. 07, 2015
Filed:
Aug. 15, 2011
Michel K. Lovell, Marshalltown, IA (US);
Kenneth W. Junk, Marshalltown, IA (US);
Ryan J. Jwanouskos, White Bear Lake, MN (US);
Michel K. Lovell, Marshalltown, IA (US);
Kenneth W. Junk, Marshalltown, IA (US);
Ryan J. Jwanouskos, White Bear Lake, MN (US);
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Abstract
A volume booster for an actuator system advantageously includes an adjustable restrictor, such that the exhaust capacity of the device can be adjusted for specific applications. The device comprises a body, a supply path, an exhaust path, and the restrictor. The supply path operates to provide a supply of fluid to boost a stroke time of an actuator in the actuator system, e.g., in an opening direction. The exhaust path operates to accommodate backpressure relief when the actuator system operates the actuator in a closing direction, for example. The restrictor is disposed within the exhaust path and is selectively manipulable between a plurality of positions to define a plurality of distinct exhaust capacities, thereby eliminating any requirement to change the entire volume booster to achieve a different exhaust capacity.