# US 10,866,040 B2 · Low pressure oil cooled composite ram bushing with secondary cooling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,866,040 B2 - Document ID: US10866040B2 - Status: Granted - Kind: B2 - Application number: 16/238,560 - Filed: 2019-01-03 - Published: 2019-05-09 - Granted: 2020-12-15 - Earliest claimed: 2012-01-05 - Assignees: Stolle Machinery Company, LLC - Applicants: Stolle Machinery Company, LLC - Inventors: Rodney Adolph Blue - Web page: https://patentgrep.com/patent/US10866040B2 ## CPC - F28F 27/02: for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) - B30B 15/34: Heating or cooling presses or parts thereof - B21D 37/16: Heating or cooling - B21D 37/18: Lubricating {, e.g. lubricating tool and workpiece simultaneously (lubricating workpieces for deep-drawing B21D22/201)} - B21D 51/26: cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K) - F16C 37/00: Cooling of bearings - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS ## Abstract A low pressure system for cooling a ram bushing is provided. The low pressure system includes at least one check valve disposed on a T-coupling downstream of the low pressure pump. The check valve allows for the pressure to be maintained in the cooling system, but also allows pressure to be relieved in the event of an over pressure condition. ## Claims ### Claim 1 A ram bushing cooling system for a ram bushing, said ram bushing having at least one first cooling inlet and at least one second cooling inlet, said cooling system comprising: a low pressure pump; and a conduit system structured to provide fluid communication between said low pressure pump and said ram bushing at least one first cooling inlet. ### Claim 2 (depends on 1) The cooling system of claim 1 wherein: said conduit system including a plurality of conduits with at least a primary cooling conduit; and said low pressure pump disposed on said primary cooling conduit one primary cooling conduit. ### Claim 3 (depends on 1) The cooling system of claim 1 wherein: said plurality of conduits including at least one side conduit; said at least one side conduit coupled to, and in fluid communication with, said primary cooling conduit at a T-coupling; and at least one check valve disposed on said at least one side conduit, said at least one check valve structured to allow a cooling fluid to pass through said at least one side conduit upon the event of an over pressure condition downstream of said low pressure pump. ### Claim 4 (depends on 1) The cooling system of claim 1 wherein: said conduit system including a plurality of conduits with at least a primary cooling conduit; said low pressure pump disposed on said primary cooling conduit; and said primary cooling conduit includes a first end and a second end, said primary cooling conduit second end coupled to, and in fluid communication with, said ram bushing at least one first cooling inlet. ### Claim 5 (depends on 4) The cooling system of claim 4 wherein: said plurality of conduits include at least one side conduit; and said at least one side conduit being coupled to, and in fluid communication with, said primary cooling conduit at a location downstream of said low pressure pump. ### Claim 6 (depends on 1) The cooling system of claim 1 wherein: said conduit system including a plurality of conduits with at least a primary cooling conduit and at least one side conduit; said low pressure pump disposed on said primary cooling conduit; and at least one check valve disposed on said at least one side conduit, said at least one check valve structured to allow a cooling fluid to pass through said at least one side conduit upon the event of an over pressure condition downstream of said low pressure pump. ### Claim 7 (depends on 6) The cooling system of claim 6 wherein: said conduit system at least one side conduit includes a first conduit and a second conduit; said first and second conduit each coupled to, and in fluid communication with, said primary cooling conduit; said at least one check valve includes two check valves, a first check valve and a second check valve; said first check valve disposed on said first conduit, said first check valve structured to allow a cooling fluid to pass through said first conduit upon the event of an over pressure condition downstream of said low pressure pump; and said second check valve disposed on said second conduit, said second check valve structured to allow a cooling fluid to pass through said second conduit upon the event of an over pressure condition downstream of said low pressure pump. ### Claim 8 (depends on 7) The cooling system of claim 7 wherein: said first check valve structured to allow fluid to pass at a first selected pressure; and said second check valve structured to allow fluid to pass at a second selected pressure. ### Claim 9 (depends on 8) The cooling system of claim 8 wherein said first selected pressure is lower than said second selected pressure. ### Claim 10 (depends on 8) The cooling system of claim 8 wherein: said first selected pressure is between about 50 psi and 150 psi; and said second selected pressure is between about 60 psi and 150 psi. ### Claim 11 (depends on 10) The cooling system of claim 10 wherein said first selected pressure is lower than said second selected pressure.