Abstract: A device and method for mounting a tire (20) on a wheel (22) wherein the wheel is secured to a mounting table (48) and the tire is secured between the fingers (62) of a pivot arm (54). The pivot arm swings the tire into a position over the wheel wherein a sector of the tire beads (30 and 32) are laterally opposite the radial perimeter surface (38) of the wheel. The pivot arm is then advanced toward the mounting table so that the sector of the tire beads (30 and 32) contacts the radial perimeter surface (38) that is defined between the flanges (42 and 44) of the wheel (22). A button arm (66) advances toward the wheel (22) in an axial direction to cause a second sector of the tire beads (30 and 32) to pass over one of the wheel flanges (42 or 44) and position the tire beads within the second sector within a well (40) that is defined between the flanges (42 and 44) of the tire (22). The pivot arm then releases the tire and the button arm retracts from the tire.

Abstract: A micromachined accelerometer includes two capacitors comprising a pair of fixed capacitor electrodes and an intermediate movable proof mass serving as a common electrode which is displaced under acceleration to differentially vary the capacitances. A circuit holds the common electrode at a bias voltage and a switching circuit rapidly alternating between two phases separately connects the fixed electrodes to a main reference voltage and to ground during a first phase and to a common intermediate voltage during a second phase. A charge amplifier senses capacitance changes due to acceleration to produce an output voltage and an attenuating amplifier responsive to the output voltage produces the common intermediate voltage. A compensation servo circuit responsive to the output voltage generates the bias voltage which controls an electrostatic balancing force which is applied to the proof mass during the first phase to maintain the proof mass near a rest position.

Abstract: A quad-gate demodulator circuit for capacitive transducers in which analog gate devices replace the diodes of a prior art diode-quad bridge circuit. This improvement eliminates the temperature and ratiometricity errors associated with the diode-quad circuit.