25-02-2021 дата публикации
Номер: US20210053468A1
Принадлежит:
A rail assembly includes a track assembly, an elongate shaft mounted to the track assembly, and a carriage assembly received within the track assembly. The carriage assembly includes a body portion, an exterior surface of the body portion, a slider bracket fastened to the exterior surface of the body portion, and a gear box positioned within the slider bracket. The elongate shaft extends through the gear box. 1. A rail assembly , comprising:a track assembly;an elongate shaft mounted to the track assembly; and a body portion;', 'an exterior surface of the body portion;', 'a slider bracket fastened to the exterior surface of the body portion; and', 'a gear box positioned within the slider bracket, wherein the elongate shaft extends through the gear box., 'a carriage assembly received within the track assembly, wherein the carriage assembly comprises2. The rail assembly of claim 1 , wherein the gear box comprises:a shaft nut; anda nut drive gear.3. The rail assembly of claim 2 , wherein the shaft nut comprises gear teeth positioned about an outer circumference of the shaft nut.4. The rail assembly of claim 3 , wherein the gear teeth of the shaft nut extend from an exterior surface of the shaft nut.5. The rail assembly of claim 4 , wherein the nut drive gear engages with the gear teeth of the shaft nut to transmit motion from the nut drive gear to the shaft nut.6. The rail assembly of claim 5 , wherein the nut drive gear is a worm gear.7. The rail assembly of claim 3 , wherein the shaft nut further comprises thread teeth positioned about an interior circumference of the shaft nut.8. The rail assembly of claim 7 , wherein the elongate shaft comprises threads that extend from an exterior surface thereof claim 7 , and wherein the thread teeth positioned about the interior circumference of the shaft nut engage with the threads of the elongate shaft.9. The rail assembly of claim 2 , wherein the carriage assembly further comprises:a drive assembly coupled to the carriage ...
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