B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/19
B02C 25/00 (2006.01) B02C 18/24 (2006.01) B02C 23/04 (2006.01)
Patent
CA 1280392
ABSTRACT A rotary shredding apparatus having in combination counterrotating cutter supporting shafts operated by a reversible fluid pressure driven motor, and a fluid flow circuit connected to the reversible motor and including a pump supplied source of fluid at a predetermined nominal operating flow rate, a fluid pressure responsive relief valve operative for fluid flow exceeding said predetermined nominal operating flow rate to return fluid to the source, and a fluid flow directing valve connected in fluid flow relation between said relief valve and said fluid driven motor, and control connected to said fluid flow directing valve means; a fluid flow rate detecting sensor disposed in said hydraulic fluid flow circuit between said fluid flow directing valve and said pressure responsive relief valve, whereby upon the fluid flow rate de- tecting sensing fluid flow reduction at from about 5% to 10% of said predetermined nominal operating flow rate in said fluid flow circuit said fluid flow de- tecting sensor energizes said control means to stop said motor means and establishes that the flow di- recting valve dial moved to reestablish flow.
545430
Groves Harold J.
Williams Robert M.
Mitchell Richard J.
Williams Patent Crusher And Pulverizer Company
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