Adjustable sealing means

Details Adjustable sealing means Adjustable sealing means

2007-10-15

2009-06-02

Bastianelli, John (Department: 3753)

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

C251S214000, C251S229000, C251S251000, C251S264000, C277S526000, C277S532000

Reexamination Certificate

active

07540303

ABSTRACT:
A valve has a valving element which is rotatably fitted within a valve body. This valving element of the valve is joined by a stem or shaft portion which extends out of the valve body to interact with an actuator and transmit torque to the valving element. In plug valves, pressure needs to be also applied to the valving element to insure a proper closure. The invention relates to a mechanism to adjustably seal the stem/body interface using only one screw that is positioned on the front of the valve cover for easy access. The force generated by the screw is transposed into a vertical force by a rotatable cam. The multiple faces of the cam are used to transmit the force vertically and horizontally and will maintain the mechanism in a straight position.

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