Internally lubricated ball screw and nut linear actuator
US2001029797A1
Multiple stage, multiple extend, speed reducing ball screw linear actuator and method of constructing and operating the actuator
US6601676B2
Self-lubricating ballscrew
US6453761B1
Direct attachment electric motor operated ball nut and screw linear actuator
US6101889A
Ball screw and nut linear actuator assemblies and methods of constructing and operating them
US5937700A
Externally installable ball return crossover systems for ball nut and screw assemblies and methods of constructing and installing them
US6014906A
Ball screw and nut assembly incorporating a partible multiple jaw support system for supporting an axially rotatable ball screw
US6112610A
Externally insertable self-retaining crossover for ball nut and screw assemblies
US5899114A
Differential ball screw and nut assembly and method of obtaining relative linear motion differentially
US5943910A
Telescopic ball nut and screw linear actuator and method of constucting and using it
US6082207A
Vertically operating ball screw and nut actuator system for synchronously moving multiple elements in load balanced opposed directions, and methods of constructing and operating ball screw actuator systems
US5943919A
Ball screw actuators
US5868032A
Ball screw and nut linear actuator assemblies and methods of cushioning their travel
US5622082A
Ball nut and screw assemblies with improved crossovers
US5555770A
Ball screw and nut system
US5560251A
Ball nut and screw assembly with an improved ball nut connector system and method of securing the ball nut of the assembly in operating position
US5485760A
Ball nut and screw assemblies and methods of attaching extensions or housings to the ball nuts thereof
US5467661A
Ball nut and screw assembly with backdrive control
US5467662A
Ball nut and screw assemby with enhanced radial load capacity
