Square D Company

Schneider Electric Usa, Inc.

T Ray Robbins

Stanley H Edwards, Jr

Barry Edward Powell

Conrad S Weiden

Robert W Sehmer

Paul D Johnson

An interlock contact block providing an automatic electrical disconnect for pushbutton operated contact blocks when components of the pushbutton switch assembly become sufficiently loose or dislodged from one another that proper operation of one or more contact blocks associated with the switch assembly can not be operated by the pushbutton assembly.

Contact block with interlock

An operating shaft which provides compensation for axial and spatial misalignment between a rotatable component mounted within an enclosure and a rotating apparatus generally outside the enclosure is disclosed. The operating shaft has a first end dimensioned to be slidably received within a receiving portion of the rotating apparatus such that the shaft is maintained in a fixed angular position with respect to the rotating apparatus. The shaft is axially slidable with respect to the rotating apparatus such that it will provide compensation for axial misalignment between the rotatable component and the rotating apparatus. The shaft has a second end configured to engage the rotatable component such that rotation of the rotating apparatus will produce a corresponding rotation of the rotatable component. The shaft also has a spatial compensation device which is integrally formed from the shaft between the first and second ends. The spatial compensation device provides compensation for spatial misalignment between the axis of the rotatable component and the axis of the rotatable apparatus. This is accomplished by creating a compensating angle between the first and second ends which permits the shaft to be rotated about its axis while maintaining the compensating angle.

Device for providing axial and spatial misalignment compensation between

An operating shaft which provides compensation axial and spatial misalignment between a rotatable component mounted within an enclosure and a rotating device generally outside the enclosure. The operating shaft has a first end which is dimensioned to be slidably received within a receiving portion of the rotating device such that the shaft is maintained in a fixed angular position with respect to the rotating device. The shaft is axially slidable with respect to the rotating device such that it will provide compensation for axial misalignment between the rotatable component and the rotating device. The shaft has a second end formed to engage the rotatable component such that an rotation of the rotating device will produce a corresponding rotation of the rotatable component. The shaft also has a spatial compensation device which is integrally formed in the shaft between its first and second ends. The spatial compensation device provides compensation for spatial misalignment between the axis of the rotatable component and the axis of the rotatable device. This is accomplished by creating a compensating angle between the first and second ends which permits the shaft to be rotated about its axis while maintaining the compensating angle.

An enclosure for electrical or electronic devices having components requiring periodic adjustment is provided with an access opening to the adjustments for the components including a hinged, attachable door for closing and sealing the access opening.

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Zebulon, NC, United States of America

T Ray Robbins