Regenerative valve

Details Regenerative valve Regenerative valve

1982-02-22

1988-02-09

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

Inlet fluid supplemented by controlled fluid pressurized in...

91446, 251 634, F15B 13042

Patent

active

047234768

ABSTRACT:
A regenerative valve which includes a valve body having a bore therein intersected by first and second control passages connected respectively to a four-way directional control valve; the bore is also intersected by first and second cylinder control cavities connecting with the head end and rod end respectively of a double-acting cylinder; a check valve poppet is seated in said bore blocking flow to the head chamber of the cylinder. A shuttle spool is also positioned in said bore and is movable between a first working position allowing the cylinder to retract its piston and a regeneration position opening flow across the first and second cylinder control cavities while blocking flow to the second control passage. The shuttle spool engages the poppet member in its regeneration position causing the poppet to open a flow path from the first control passage to the first cylinder control cavity and thereby allow regeneration flow.

REFERENCES:
patent: 3071926 (1963-01-01), Olson et al.
patent: 3438307 (1969-04-01), Ahlenius
patent: 3474708 (1969-10-01), Schmiel
patent: 3568707 (1971-03-01), Shore
patent: 3737602 (1973-06-01), Bueler
patent: 4349041 (1982-09-01), Bates
patent: 4397221 (1983-08-01), Friesen et al.

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