Traversing hoists – Having horizontally swinging boom or bridge – And vertically swinging
Patent
1986-10-23
1988-06-14
Pekar, John A.
Traversing hoists
Having horizontally swinging boom or bridge
And vertically swinging
180140, 180236, B62D 510, B66C 2306
Patent
active
047506288
ABSTRACT:
Each pair of wheels is interconnected by a tie-rod assembly. The tie-rod assemblies include ring gears connected with each of the wheels, and drive motors including drive gears mesh with each ring gear whereby the tie-rod assemblies enable synchronous turning movement of the wheels when the drive motors are actuated.
REFERENCES:
patent: 2512979 (1950-06-01), Strother
patent: 2863518 (1958-12-01), Pellizzetti
patent: 3064745 (1962-11-01), Colt et al.
patent: 3197229 (1965-07-01), Houlton
patent: 3255840 (1966-06-01), Tangen
patent: 3556241 (1971-01-01), Mitchell
patent: 3648850 (1972-03-01), Rochon
patent: 3903979 (1975-09-01), Perrotin
patent: 3972379 (1976-08-01), Norris
patent: 3990714 (1976-11-01), Hornagold
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