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:
Mar. 21, 2017
Filed:
Feb. 19, 2014
Fisher Controls International Llc, Marshalltown, IA (US);
James L. Gossett, Marshalltown, IA (US);
William E. Wears, Marshalltown, IA (US);
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Abstract
An actuator apparatus includes and actuator and a yoke. The actuator includes an upper casing and a lower casing defining a cavity and an actuating device disposed at least partially within the cavity and dividing the cavity into an upper chamber and a lower chamber. The yoke is connected to the actuator and has an actuator spring disposed within a body of the yoke and a yoke tube extending longitudinally through the body of the yoke. The yoke tube extends from an aperture in the lower casing of the actuator and provides an air passage that fluidly connects the lower chamber of the actuator and a controller.