Abstract: A lock operated by a corresponding key. The lock has a housing, and a keyway is formed in the housing along a keyway axis for receiving the corresponding key therein. A latch is moveable with respect to the housing between a first position, wherein the lock is secured, and a second position, wherein the lock is not secured. A permutation surface is formed on the latch, and a plurality of intermediaries are disposed within the housing. Each intermediary has a first portion engageable with the permutation surface of the latch and a second portion engageable with the corresponding key, wherein insertion of the corresponding key into the keyway selectively engages the intermediaries with the permutation surface in a predetermined sequence, thereby moving the latch from the first position to the second position.

Abstract: A lock operated by a corresponding key. The lock has a housing, and a keyway is formed in the housing along a keyway axis for receiving the corresponding key therein. A latch is moveable with respect to the housing between a first position, wherein the lock is secured, and a second position, wherein the lock is not secured. A permutation surface is formed on the latch, and a plurality of intermediaries are disposed within the housing. Each intermediary has a first portion engageable with the permutation surface of the latch and a second portion engageable with the corresponding key, wherein insertion of the corresponding key into the keyway selectively engages the intermediaries with the permutation surface in a predetermined sequence, thereby moving the latch from the first position to the second position.

Abstract: The invention pertains to apparatus for positioning a gage and structure associated with the gage, such as a protective shield. A gage arm is mounted for linear movement upon a column, and the arm extends through structure which surrounds the arm forming a shield protecting the gaging apparatus from foreign matter. Power means position the gage arm protective shield and sensors determining the relative position between the shield and the gage arm control the position of the shield to prevent the shield from having an adverse effect upon the gage arm measurement. A lost motion linkage may interconnect the gage arm support with the shield for the positioning thereof, or the gage arm support may be positioned independently.

Abstract: The invention pertains to a linear variable differential transformer (LVDT) probe utilizing a core mounting upon a sensing rod axially translatable with respect to a coil. The coil is movably supported for initially aligning the core and coil in a predetermined relationship to produce a desired electrical situation, such as a null condition, and the probe utilizes alignment means for quickly initially aligning the core and coil.

Abstract: A temperature compensated measuring system for measuring linear deformation due to the application of force. Electrical signals produced by a pair of dissimilar metal thermal detectors utilizing a pair of linear variable differential transformers are electrically summed to provide a signal free of thermal influence. Parallel rods of diverse metals are interconnected through one LVDT while a portion of one of the rods is connected to the member to be measured by the other LVDT and the summation of electrical signals permits an electrical thermally compensated readout indicating deformation due to force.