Variable flow hydraulic system with reserve fluid eductor

• US 3,370,423 A
• Filed: 05/27/1966
• Issued: 02/27/1968
• Est. Priority Date: 05/27/1966
• Status: Expired due to Term

• Current Assignee: Donald R. Vaughan
• Original Assignee: Donald R. Vaughan
• Inventors: Vaughan, Donald R.
• Application Number:
  US04/553,331
• Time in Patent Office: 641 Days
• US Class Current: 60/454
• CPC Class Codes: F15B 21/04 Special measures taken in connection with the properties of the fluid
• CPC Class Codes: F15B 7/10 Compensation of the liquid content in a system F15B7/08 takes precedence

Claims

1. IN A HYDRAULIC FLUID FLOW SYSTEM:

A HYDRAULIC PUMP HAVING A FLUID INLET;

A FIRST CONDUIT COUPLED TO SAID INLET AND EXTENDING OUTWARDLY FROM SAID PUMP FOR DIRECTING A RETURN FLOW OF HYDRAULIC FLUID THERETO;

A TANK ADAPTED TO CONTAIN A SUPPLY OF SAID FLUID;

A SECOND CONDUIT PLACING SAID TANK IN FLUID COMMUNICATION WITH SAID FIRST CONDUIT AT A LOCAION THEREON SPACED FROM SAID INLET, WHEREBY A PORTION OF SAID RETURN FLOW WILL BE DIRECTED INTO AND RETAINED WITHIN SAID TANK;

AND FLUID PASSAGE MEANS INTERCONNECTING SAID TANK AND SAID FIRST CONDUIT AT A SECOND LOCATION ON THE LATER BETWEEN THE PUMP AND SAID FIRST LOCATION AND BEING DISPOSED FOR DRAWING SAID FLUID INTO SAID FIRST CONDUIT FROM SAID TANK IN RESPONSE TO THE FLUID PRESSURE AT SAID INLET, WHEREBY VARIATIONS IN THE VOLUME RATE OF FLOW OF SAID FLUID TO SAID INLET CAN BE EFFECTED TO PERMIT SAID PUMP TO SATISFY CHANGING LOAD CONDITIONS TO SAID SYSTEM.