Road structure – process – or apparatus – Apparatus – Automatic control
Patent
1975-06-13
1976-12-14
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
Automatic control
E01C 1900
Patent
active
039972771
ABSTRACT:
An improved material transfer mechanism comprising a selectively variable speed hydraulic power assembly having an output connected to and powering a material conveyor. A double acting hydraulic ram positions a swash plate control lever that determines the rotational speed of the output shaft, and a hydraulic porting valve assembly is disposed to actuate the hydraulic ram, the hydraulic porting valve assembly comprising a pivotally supported valve body having an internally disposed fluid control means, the fluid control means being variably displaced in the valve body by the actuation of a pressure controlling mechanism for the purpose of selectively determining and establishing fluid communication of a source of hydraulic pressure fluid to alternate ends of the hydraulic ram with the hydraulic porting valve assembly to selectively control the hydraulic ram. The valve body is biased in a first pivotal direction and is movable in a second pivotal direction by a feed back linkage cable interconnecting the valve body and the swash plate control lever. A sensor mechanism detects the material transferred by the material conveyor and responsively positions the pressure controlling mechanism independently to the position of the valve body.
REFERENCES:
patent: R25275 (1962-10-01), Pollitz
patent: 2591502 (1952-04-01), Bohannan
patent: 3453939 (1969-07-01), Pollitz
patent: 3537363 (1970-11-01), Long
patent: 3678817 (1972-07-01), Martenson
patent: 3774401 (1973-11-01), Allen
Smith Don W.
Swisher, Jr. George W.
Westphall Gary L.
Byers Jr. Nile C.
CMI Corporation
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