Characterizing linkage assembly
AssigneeGordon-Piatt Energy Group, Inc.
InventorJames L. Jones
Life of this patent
Estimating the term…
Abstract
An improved characterizing linkage assembly of the type utilized to proportion the flow of fluids in response to motor controls, such as in the control of fuel and air mixtures in industrial combustion systems. The linkage system comprises a cam assembly having an adjustable curvilinear cam band, which is rotatable by a drive shaft. A biased follower rod is urged against the cam band, and upon movement thereby, pivots a linkage actuator arm which is bearingly supported on the drive shaft. Rotation of the drive shaft in response to a change in a selected process parameter imparts movement to the cam band, the follower rod and thus the linkage actuator arm in proportional travel.
Claims8
A characterizing linkage assembly activated by a modulator motor and responsive thereto for proportionately motoring selected elements, the linkage assembly comprising:
- a support frame;
- a drive shaft bearingly supported by the support frame, the drive shaft rotatable by the modulator motor;
- a linkage actuator arm rotatably supported by the drive shaft by a central hub portion thereof and having a follower arm portion extensive from the central hub portion of the linkage actuator arm;
- a follower rod slidingly supported by the support frame for reciprocal movement in a first direction and in an opposite second direction, the follower rod disposed in pivotal engagement with the follower arm portion so that movement of the follower rod rotates the linkage actuator arm;
- biasing means for biasing follower rod in the first direction;
- and
- cam means attached to, an rotatable by, the drive shaft and cooperating with the biasing means for moving the follower rod in the first and second directions in response to rotation of the drive shaft, the cam means characterized as comprising:
- a cam support member having a hub portion having a bore and attachable to the drive shaft extensible through the hub portion bore;
- cam band means supported by the cam support member for forming an adjustable curvilinear stop band rotatable with the drive shaft;
- and
- wherein the follower rod is biased by the biasing means so that one end of the follower rod is slidably restrained along the stop band whereby the rotational position of the follower arm portion and the linkage actuator arm is determined by the rotational position of the drive shaft and the selected adjustment of the curvilinear stop band.
Dependencies are inferred from the claim text.