Implements or apparatus for applying pushing or pulling force – Vehicle attached jack – Attached to trailer tongue
Patent
1987-09-21
1989-07-18
Sikes, William L.
Implements or apparatus for applying pushing or pulling force
Vehicle attached jack
Attached to trailer tongue
254425, 254427, 254 95, 254 96, 254 97, B60S 902
Patent
active
048487350
ABSTRACT:
A tongue mounted rack and pinion jack for a trailer wherein a pair of die-cast gear box segments are bolted together for supporting a handle driven worm gear and a pinion gear in self-contained bearing surfaces formed in the gear box segments. When the gear box segments are secured together a gear box, a rack receiving passage and a leg receiving passage are formed therein. A common wall formed in the molded gear box segments separates the gear box from the rack receiving passage and has a window formed therein through which teeth on a pinion gear extend into the rack receiving passage and engage teeth on a rack extending longitudinally through the rack receiving passage and secured to a leg extending through the leg receiving passage.
REFERENCES:
patent: 1304358 (1919-05-01), Norlund
patent: 1324721 (1919-12-01), Benedict
patent: 1850513 (1932-03-01), Murphy
patent: 3466011 (1969-09-01), Hewes, Jr. et al.
patent: 3921958 (1975-11-01), Brockelsby
patent: 3934852 (1976-01-01), Weber et al.
Fulton Manufacturing Corporation; Milwaukee, Wis., "Trailer Jacks, Owner's Manual, Model No. 650 and 675", Hammerblow Jacks, Rack & Gear Type.
Healy Brian M.
Sikes William L.
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