Leo L Robinson

US Patent:

41579569, Jun 12, 1979

Filed:

Apr 19, 1978

Appl. No.:

5/897589

Inventors:

Leo E. Robinson - Fresno CA

International Classification:

E02F 700
B07B 128

US Classification:

209260

Abstract:

A screening bucket characterized by a rear portion, and a front portion supported for pivotal displacement toward and away from the rear portion, a pair of hydraulic slave cylinders connected to the front portion for displacing it relative to the rear portion for establishing therebetween a closeable discharge opening, a deployable flexible screen for forming a perforated occlusion for the discharge opening comprising a web formed of a plurality of links defining a myriad of discharge openings through which contents of less than a selected screen size is discharged from the bucket, and a power driven reel for alternately taking-up and paying-out the web as the front portion of the bucket is displaced relative to the rear portion thereof.