The ornamental design for a chaircontrolknob, as shown and described.
This application is related to design patent application Ser. Nos. 29/305,602; 29/305,603; 29/305,605; 29/305,606; 29/305,607; 29/305,610; and 29/305,612, which are filed concurrently herewith.
FIG. 1 is a front, left side, and top perspective view of a chair control knob showing my new design;
FIG. 2 is an enlarged perspective view thereof;
FIG. 3 is an enlarged left side elevational view, the right side elevational view being a mirror image thereof; and,
FIG. 4 is an enlarged front elevational view thereof.
The characteristic feature of the design resides in the application of a part having the appearance of an automotive transmission shift knob to a chair control knob.
The broken line showing of chair is included for the purpose of illustrating environmental structure and forms no part of the claimed design.