Abstract: Inertial rate sensor and method in which in which a single output terminal is utilized for delivering a rate output signal during normal operation, interfacing with an external computer during a programming mode, and for providing a warning in the event of a failure. Access to the programming mode is permitted only when a predetermined sequence of conditions is met, and accidental initiation of the programming mode is virtually impossible. Compensation data is stored redundantly at two locations in an internal memory, and the data is read from both locations and compared to verify its validity. Signals are monitored at different points to detect the occurrence of failures.

Abstract: Power operated caulking gun having a housing, a cradle extending from the housing for receiving a cartridge of fluent material, a push rod for engagement with a cartridge in the cradle for dispensing the fluent material from the cartridge, a drive shaft extending from the housing and adapted to be received in the chuck of a drive tool, drive means interconnecting the drive shaft and the push rod, and a stabilizer extending from the housing for engagement with an abutment on the barrel of the drive tool to prevent rotation of the caulking gun relative to the drive tool. In some embodiments, the cradle is adapted to hold a cartridge having two tubes of fluent material positioned side-by-side, and the caulking gun includes a second push rod for dispensing material from the second tube in the cartridge.

Abstract: Redundant rate sensor and method in which inertial rate is monitored with a plurality of vibratory sensing elements mounted in a single enclosure, signals from the sensing elements are processed to provide an independent rate output signal for each of the sensing elements, and the independent rate output signals are delivered to a connector which is accessible externally of the enclosure.