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US 12,378,981 B2Granted
Hydraulic regeneration circuit with multiple speeds
OwnerIvan Amicinventor
Life of this patent
Estimating the term…
Abstract
The present disclosure shows a hydraulic regeneration circuit for a hydraulic cylinder that enables multiple extension speeds for the cylinder even while using fixed displacement pumps. The regeneration circuit uses the expelled fluid to drive a hydraulic pump/motor combination to create 4 or more speeds, as opposed to the 2 speeds typical in regeneration circuits. By using directional flow control valves, the fluid can be combined in such a way that the operator can choose a speed multiplier for the hydraulic cylinder to operate at.
Claims17
A hydraulic system or hydraulic circuit comprising of
- a. one or more hydraulic cylinders actuated by the flow of a primary hydraulic pump
- b. at least one hydraulic motor that will receive expelled fluid from said hydraulic cylinders thereby causing said motor to rotate
- c. at least one hydraulic pump connected to said hydraulic motors in such a way so that rotation of said hydraulic motors causes rotation of said hydraulic pumps
- d. one or more flow control devices to select the flow entering the said hydraulic pumps and motors, or regulate the volume of fluid entering said hydraulic pumps and motors
- e. one or more flow control devices, either as separate entities or as a part of said flow control devices which select said flow entering said hydraulic pumps and motors, which select the flow exiting said hydraulic pumps and motors or regulate the amount of fluid exiting said hydraulic pumps and motors
- f. the fluid exiting said hydraulic pumps and motors can be selectively retained, combined or discarded via the said flow control devices
- g. said fluid that is retained or combined is reintroduced into said hydraulic cylinder or cylinders either directly, or indirectly via the hydraulic circuit,
- wherein the flow control devices are arranged in such a way that the manipulation of these flow control devices enables three or more flow rates of the said fluid that is retained or combined, for any given flow rate of the primary hydraulic pump,
- wherein the creation of one or more of the flow rates of the said fluid that is retained or combined involves the discarding of fluid from one or more of the said hydraulic pumps or motors,
- wherein the said fluid that is retained or combined adds to the fluid provided by the primary pump, and this addition produces a greater total flow rate to the said hydraulic cylinders as compared to that provided by the primary pump alone,
- and wherein the said fluid that is retained or combined does not pass through another hydraulic pump after exiting from said pumps connected to said motors until it is reintroduced into said hydraulic cylinders either directly, or indirectly via the hydraulic circuit.
8 more elements
Dependencies are inferred from the claim text.