Abstract: A component for a wearable electronic device can include a housing defining an internal volume, a first connector that is removably attachable to a head-mounted display. the first connector configured to electrically connect to the head-mounted display. and a second connector that is removably attachable to a supplemental unit. the second connector configured to electrically connect to the supplemental unit. The component can include a stiffener disposed in the internal volume, and the stiffener can be flexible along a first axis and rigid along two axes that are perpendicular to the first axis and to each other. An operational component can be disposed in the internal volume, and the operational component can be electrically connected to at least one of the first connector or the second connector.

Abstract: A clamping mechanism is provided to prevent movement of the rotatable stock carrier of a multiple spindle bar machine after it has rotated into position for the machining operation. The clamping mechanism comprises a controllable locking pin to engage indexing pin slots on the stock carrier, a passive pressure brake located opposite the locking pin, and a hydraulically actuated pressure brake in the same quadrant as the locking pin. The hydraulically actuated brake clamps the carrier against the passive brake, and in combination with the locking pin holds the carrier against movements caused by the forces of the machining tools. The hydraulic brake is released by a programmable controller to allow intended rotation of the carrier to a new position.

Abstract: A method and means for accurately positioning a tool slide in an automatic machining apparatus. Said method and means utilizing a fluid operated drive means, a linear position detecting means, an encoder means operatively associated with said linear position detecting means, means for controlling fluid flow to said fluid operated drive means and a programmable controller means for receiving and storing control data information and for receiving coded information for comparison to said control data information and for outputting a signal to control the operation of said fluid drive means.