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. 02, 2019
Filed:
Aug. 16, 2017
Fisher Controls International Llc, Marshalltown, IA (US);
Trenton Frank Jackson, Marshalltown, IA (US);
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Abstract
Apparatus are disclosed to bias a tube towards a seal. An example apparatus includes a pneumatic actuator having a diaphragm plate, a yoke housing, and a tube. The tube conveys pressurized fluid between the yoke housing and the diaphragm plate, wherein a first end of the tube extends through a first seal gland in the diaphragm plate to form a seal against an outer surface of the tube and a second end of the tube extends through a second seal gland in the yoke housing to form a seal against the outer surface of the tube. The first end of the tube has a first cross-sectional area that is greater than a second cross-sectional area of the second end of the tube to bias the tube toward the yoke housing during operation of the pneumatic actuator.