Apparatus to bias a moveable tube towards a seal
AssigneeFisher Controls International LLC
InventorTrenton Frank Jackson
Life of this patent
Estimating the term…
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.
Claims20
A pneumatic actuator comprising:
- a diaphragm plate;
- a yoke housing;
- and
- a tube to convey 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, and wherein 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.
A pneumatic actuator comprising:
- a diaphragm plate;
- a yoke housing;
- a tube to convey pressurized fluid between the yoke housing and the diaphragm plate;
- and
- means for biasing the tube toward the yoke housing during operation of the pneumatic actuator.
A pneumatic actuator comprising;
- a tube to convey pressurized fluid between a yoke housing and a diaphragm plate having a first end and a second end opposite the first end, wherein 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.
Dependencies are inferred from the claim text.