Abstract: A harmonic drive transmission arrangement has an input member and an output member. The transmission comprises a generally cylindrically shaped housing including having a circular spline gear arranged therein, and a cup-shaped flexspline with an array of radially outwardly directed gear teeth on a first end thereof, engaged with the circular spline teeth. A wave generator is rotatably supported on the input member radially inwardly of the gear teeth on the flexspline, and an annular diaphragm is arranged at a second end of the cup-shaped flexspline. A flange is arranged integral to the diaphragm to permit the cup-shaped flexspline to be securely attached to the output member, for the transmission of input through she harmonic drive transmission arrangement, and out the output member through the flange. A "U" shaped channel is annularly arranged between the diaphragm and the flange to distinguish the flange from the diaphragm.

Abstract: The present invention comprises a harmonic drive transmission for the simultaneous production of a first and a second rotary output. The invention includes a primary housing, a first flexspline may be hermetically secured within the housing with a first wave generator arranged therewithin. A second flexspline may be hermetically secured to the first flexspline within the housing, the second flexspline having a second wave generator arranged therewithin. A first driveshaft is connected to the second wave generator, and a second driveshaft is connected to the first wave generator. A first circular spline is in engagement with a plurality of gear teeth and connected to a first output shaft, and a second circular shaft is in engagement with a plurality of gear teeth and is connected to a second output shaft, to provide simultaneous output by a plurality of output shafts from a hermetically arranged harmonic drive transmission.

Abstract: A modular oil monitor for a gas turbine engine includes a mounting pad having a seat with a plurality of oil inner ports disposed therein and joined in flow communication with an oil tank and an oil sump of the engine. A module having a base is removably fixedly joined to the seat, with the base having a plurality of oil outer ports disposed therein and joined in flow communication with respective ones of the inner ports. The module also includes a filter circuit disposed in flow communication between first and second ones of the outer ports, with the filter circuit including an oil filter removably joined to the module for filtering supply oil channeled therethrough. A first sensor is removably joined to the module for measuring the oil temperature or pressure. The module provides at one location various lubricating system components which may be individually inspected or replaced. Or, the entire module may be replaced in one operation.