Abstract: A hand tool with a mechanical linear drive mechanism coupled to a work implement. The drive mechanism includes a roller screw with a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of rollers, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected to a multiple speed gearbox which includes a primary motor coupled to a carrier gear with three planet gears. Disposed around the planet gears is an outer ring gear. Coupled to the outer ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

Abstract: A linear drive actuator (10) that includes a motor 20 coupled to a threaded roller screw shaft (70) with an integrally formed inner race (71) formed on one end used by an fixed thrust bearing (60. Mounted on the roller screw shaft (70) is a roller screw nut (75) that moves axially over the roller screw shaft (70) when the roller screw shaft (70) is rotated. Coupled to roller screw nut (75) is a hollow extension tube (85) that surrounds the roller screw shaft (70). Disposed around the extension tube (85), the roller screw shaft (70) and the roller screw nut (75) is a main housing (100) filled with a lubricant (200). The distal end of the extension tube (85) extends through the end of the main housing (100) and includes an end cap (109) or a connector. Attached to the main tube (100) is an optional volume compensation housing (90) configured to automatically dispense a lubricating fluid (200) into the main housing (90).

Abstract: A linear drive actuator that includes a linear drive mechanism that includes a hollow, threaded roller screw shaft with a thrust bearing formed on one end and a roller screw nut mounted on the opposite end moves axially over the shaft when the shaft is rotated. Attached to the roller screw nut is a hollow extension tube that both extends into a main housing. The distal end of the extension tube extends through the end of the main housing and includes an end cap or a connector. The proximal end of the drive shaft connects to a drive axle on a multiple gear assembly. The multiple gear assembly is coupled to a dual motor assembly. Located adjacent to the dual motor assembly is a volume compensation housing that contains a moving piston that divides the housing lubricant holding chamber filled with a lubricating fluid and an air chamber that communicates with outside air. During operation, the lubricating flows into the motor assembly, the gear assembly, into the nut body and to the extension tube.

Abstract: A hand tool with a mechanical linear drive mechanism coupled to a linear activated working implement. The drive mechanism includes a geared planetary roller screw that includes a torque tube connected to a roller screw's nut body. The planetary roller screw includes a fixed outer race, a rotating set of grooved rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of grooved roller, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected at one end to a gear box which is coupled to an electric motor. When the electric motor is activated, the torque tube is rotated which causes a threaded shaft in the tool to move axially. A working implement is coupled to the distal end of the threaded shaft.

Abstract: A hand tool with a mechanical linear drive mechanism coupled to a linear activated working implement. The drive mechanism includes a roller screw that includes a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of grooved rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of grooved roller, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected at one end to a multiple speed gear box which includes a primary motor coupled to a earner gear with three planet gears. Disposed around the planet gears is a ring gear. Coupled to the ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

Abstract: A hand tool with a mechanical linear drive mechanism coupled to a linear activated working implement. The drive mechanism includes a geared planetary roller screw that includes a torque tube connected to a roller screw's nut body. The planetary roller screw includes a fixed outer race, a rotating set of grooved rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of grooved roller, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected at one end to a gear box which is coupled to an electric motor. When the electric motor is activated, the torque tube is rotated which causes a threaded shaft in the tool to move axially. A working implement is coupled to the distal end of the threaded shaft.

Abstract: A gas compressor based on the use of a driven rotor having an axially oriented compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which forms a supersonic shockwave axially, between adjacent strakes. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the gas compression ramp on a strake, the shock capture lip on the adjacent strake, and captures the resultant pressure within the stationary external housing while providing a diffuser downstream of the compression ramp.

Abstract: A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.

Abstract: A gas compressor based on the use of a driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by the use of a pre-swirl compressor, and using a bypass stream to bleed a portion of the intermediate pressure gas after passing through the pre-swirl compressor back to the inlet of the pre-swirl compressor. Inlet guide vanes to the compression ramp enhance overall efficiency.