Back to results
US 4,529,512 AGranted
Hydraulic reservoir
AssigneeClark Equipment Company
InventorsWilliam H. Williamson, Roger G. Slabaugh
Life of this patent
Estimating the term…
Abstract
A hydraulic system including a closed reservoir which is pressurized at a varying pressure that is responsive to a variable condition of the system. The system minimizes the air contained in the hydraulic fluid, causing air which has been released from the hydraulic fluid to collect in the reservoir which has provision for releasing it to the atmosphere.
Claims10
A hydraulic reservoir comprising:
- a vertically disposed closed cylindrical tank for storing hydraulic fluids and having a vertically disposed axis,
- means defining an inlet port in the bottom of said tank which is coaxial with said axis,
- a vertically disposed filter having means defining a vertically disposed opening entirely through it located in said tank and arranged for hydraulic fluid entering said inlet port to move upwardly through said opening and outwardly through said filter to be filtered,
- said filter arranged so that some of the air carried by the hydraulic fluid is released from the hydraulic fluid as it moves upwardly through said vertically disposed opening,
- means defining a quiescent zone at the top of said tank above said vertically disposed opening for receiving and storing air which is released from the hydraulic fluid,
- and means defining an outlet port in said tank for discharging the filtered hydraulic fluid.
3 more elements
Dependencies are inferred from the claim text.