Abstract: MEMS (Microelectromechanical System) structures are provided that are designed to rotate in response to thermal actuation or the like. In one embodiment, the MEMS rotary structure includes a hub having one or more radial spoke members that impose a rotational force upon the hub in response to applied changes in temperature. The MEMS rotary structure can also include a ring at least partially encircling the hub and connected to the hub by means of one or more hub spoke members. Controllable clockwise, counterclockwise, or both clockwise and counterclockwise rotation of the hub or ring are provided. The MEMS rotary structures can also include thermal arched beam actuators that are operably connected to the spoke member. As the temperature changes, the thermal arched beam actuators move the spoke members in order to rotate the MEMS structure.

Abstract: A truck cab sidewall assembly and method for making the same are disclosed. A sidewall skin is provided having a front edge, rear edge, top edge, and bottom edge, and a first exterior side and a second interior side. An inwardly directed front flange is provided along the front edge, and an inwardly directed flange is also provided along the top edge. The sidewall skin has a inwardly stepped transition region spaced rearwardly of the front edge. A rear corner is formed in the skin at a location forwardly of the rear edge and rearwardly of the transition region. A portion of the skin between the rear edge and rear corner forms part of the back wall of the truck cab. The rear comer is preferably formed by a roll forming technique. The transition region is preferably formed by a die-press.

Abstract: A system to attach seats, in particular rows of lightweight seats to the light gauge deck of a high passenger marine craft. Horizontal flanges of aluminum angles (23) form a T-shaped foot locking within cavity (35) of track (29) fixed to the deck. High tensile tie straps (27a, 27b) are held between the vertical webs of the angles (23) by pins (69). A tubular pedestal (25) has upper recesses (49) which mate with a box beam supporting the seats. Threaded studs (73)of the tie straps (27a, 27b) are bolted to the box beam so that inertial forces arising in the event of an impact of the craft will be uniformly distributed by the pedestal, tie straps (27a, 27b), and angles (23), to the track for dissipation over an extended length of track, thus reducing the effects of localized shear. On assembly of the system, the angles (23) need not to be slid along the track but may be inserted individually being later spaced apart by insertion of tie straps (27a, 27b) so as to laterally the cavity (35).

Abstract: Nuclear magnetic resonance analysis of powdery or other randomly oriented solid samples is improved by slowly rotating the sample with a period exceeding the nuclear spin relaxation time of nuclei in the sample. As a result, a relatively large proportion of the crystallites in the sample are brought into resonance, thereby improving the signal to noise ratio of the NMR reading. In addition, information about the width of the entire spectrum can be obtained from analysis of measurements of only a portion of it.