Pulverizer

Details Pulverizer Pulverizer

2007-06-26

2007-06-26

Banks, Derris H. (Department: 3725)

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

C241S101710, C241S101720, C241S101730, C030S134000

Reexamination Certificate

active

10470899

ABSTRACT:
An automatically swiveling crushing apparatus has a swiveling motor in a bracket, and branches diverged from charging and discharging paths that constitute the hydraulic piping leading to a cylinder for closing or opening distal crushing arms. One of the branches extends from one of the paths then operating to open the end arms, so that a portion of the hydraulic fluid is fed to the hydraulic motor if and when internal pressure in this branch has exceeded an upper limit. The other branch extends from the other path leading to the cylinder so as to close the end arms, and this branch prevents any amount of hydraulic fluid from flowing back to the motor. The branches render dispensable a discrete or independent hydraulic piping in a self-propelled platform having a proximal working arm to be connected to the apparatus, saving cost and labor in connecting this arm to the apparatus.

REFERENCES:
patent: 4235155 (1980-11-01), Shafer
patent: 5375329 (1994-12-01), Morikawa et al.
patent: 62 083504 (1987-04-01), None
patent: 02 232470 (1990-09-01), None
patent: 2000 027239 (2000-01-01), None
patent: 2000-027239 (2000-01-01), None
patent: 2001-027239 (2000-01-01), None
patent: 2000-309951 (2000-11-01), None
patent: 2001-065608 (2001-03-01), None

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