Power drive mechanism for trailer landing gear

Claim 1

In combination (a) a trailer landing gear assembly having a cross frame, (b) a pair of upright housings secured to said cross frame, (c) telescoping leg members projecting from the lower end of said housing and having a drive connection with said housings for extending and retracting said leg members, (d) a driven shaft extending between said housings and having a rotative association with said drive connections whereby to extend or retract said leg members upon rotation thereof, (e) a gear reduction assembly on said driven shaft having an input shaft arranged to rotate said driven shaft through said gear reduction assembly and projecting from the latter, (f) said input shaft being shiftable axially to change the output ratio of said gear reduction assembly, (g) a drive motor having an output shaft, (h) mounting means mounting said drive motor on said frame with its output shaft aligned axially with the input shaft of said gear reduction assembly, (i) a coupling sleeve secured to said output shaft and having a releasable connection with one end of said input shaft for coupling said output shaft with said input shaft, (j) said sleeve connection maintaining a drive connection between said input shaft and said output shaft in all shifting movements of said input shaft.