Land vehicles – Wheeled – Attachment
Patent
1991-06-13
1993-08-24
Culbreth, Eric D.
Land vehicles
Wheeled
Attachment
74342, 74343, 2481884, B60S 908
Patent
active
052382664
ABSTRACT:
A landing gear for semitrailers includes a two speed double reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact double reduction gear assembly housed in a relatively small gear box or entirely within one of the landing gear legs, which is a cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The double reduction gear assembly is disposed on and about in-line input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two speed double reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.
REFERENCES:
patent: 3675497 (1972-07-01), Thomas
patent: 3892141 (1975-07-01), Phillips, Jr. et al.
A sales brochure entitled "Contender.TM.", from Binkley, Transportation Products Division, Warrenton, Mo. 63383.
A sales brochure entitled "Fruehauf Supports" available from Fruehauf Corporation, Detroit, Mich.
A sales brochure entitled "Kwik Shift.TM. Round and Square Leg Trailer Supports," Models CMR and CMS available from Kysor/Westran, P.O. Box 921, Byron, Ill. 61010-0921.
A sales brochure entitled "Mark V Landing Gears and Accessories," available from Holland Hitch Company, Holland, Mich.
A parts drawing of unknown origin, labelled "Exhibit U", showing a landing gear assembly.
Culbreth Eric D.
Jost International of Grand Haven Michigan
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