Land vehicles – Ski or skate appliance or attachment – Scabbards for ice or roller skates
Patent
1976-10-12
1978-04-04
Paperner, L. J.
Land vehicles
Ski or skate appliance or attachment
Scabbards for ice or roller skates
214141, 280764, 212145, E02F 372
Patent
active
040821978
ABSTRACT:
An articulated wheel vehicle comprises first and second frame assemblies pivotally connected together and a pair of steering cylinders pivotally connected between the frame assemblies for pivoting them relative to each other. A telescopic boom is pivotally mounted on the first frame assembly and has a work implement, such as a fork, attached to the end thereof. In a first embodiment of this invention, a pair of lift cylinders are pivotally connected to opposite sides of the second frame assembly and have a ground engaging plate secured therebetween and disposed in underlying relationship relative to the vehicle. In a second such embodiment, an individual plate is secured to a lower end of each lift cylinder and is disposed on a respective side of the vehicle. In carrying forth the operation of this invention, the lift cylinders are extended to engage the plate or plates with the ground to lift the first frame assembly relative to the second frame assembly while simultaneously maintaining the second frame assembly in contact with the ground. Upon alternate extension and retraction of the steering cylinders, the first frame assembly will pivot relative to the second frame assembly to thus place the work implement into an infinite number of work positions about the vehicle.
REFERENCES:
patent: 2906501 (1959-09-01), Brell
patent: 2929517 (1960-03-01), Phillips
patent: 3007590 (1961-11-01), Mathew et al.
patent: 3212659 (1965-10-01), Koch
patent: 3777898 (1973-12-01), Gallay
patent: 3836025 (1974-09-01), Olson et al.
patent: 3937339 (1976-02-01), Geis et al.
Caterpillar Tractor Co.
Paperner L. J.
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