Pumps – With condition responsive pumped fluid control – Expansible chamber pump distributor operation modified
Reexamination Certificate
2005-02-16
2009-12-08
Kramer, Devon C (Department: 3746)
Pumps
With condition responsive pumped fluid control
Expansible chamber pump distributor operation modified
C417S019000, C417S026000, C417S037000, C417S043000, C417S053000, C417S441000, C604S151000, C604S246000, C604S247000, C604S249000, C604S156000, C137S115130
Reexamination Certificate
active
07628590
ABSTRACT:
A technique for reducing the risk of free flow through a pump is disclosed. The technique includes sensing a pressure difference between the pump inlet and outlet. The pressure difference is mechanically communicated to a flow restricting element. The flow restricting element increases resistance to flow exiting the pump outlet in a relation to the pressure difference present between the pump inlet and pump outlet.
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Integrated Hydraulics Ltd, 5CK Series Check Valves, Pilot to Close 7-211.C-7-212.D.
Integrated Hydraulics Ltd, 4KD Series Check Valve, Pilot Operated with Decompression Stage 7-201.C-7-202.B.
Integrated Hydraulics Ltd, 4K82(D) & 4KK82(D) Series Check Valves, Pilot Operated—Ball Type 7-191.C-7-192.D.
Integrated Hydraulics Ltd, 4CKD Series Check Valve, Pilot Operated with Decompression Stage 7-163.B-7-164.C.
www.integratedhydraulics.com products.
Beck Jon
Brydon Christopher
Jacobsen Stephen C.
Kramer Devon C
Sterling Investments LC
Thorpe North & Western LLP
Weinstein Leonard J
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