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US 9,541,074 B2Granted
Air-driven pump system
AssigneeWilden Pump & Engineering Co.
InventorCarl J. Glauber
Life of this patent
Estimating the term…
Abstract
An air-driven pump system comprising: a directional unit that defines a directional air chamber and comprises a directional piston, a first process air intake, and a second process air intake; two pump units each including a liquid chamber, an air chamber, and a piston; a shaft affixed to the pistons; an efficiency valve system comprising an efficiency piston, wherein the efficiency unit is configured to divide inlet air entering the air-driven piston pump into control air, first process air, and second process air, and wherein the efficiency piston is in communication with the control air, first process air, and second process air before the air is distributed to the directional unit; and a second shaft which is in communication with the efficiency piston. The efficiency valve system is to prevent overfilling of the air chambers.
Claims19
An air-driven pump comprising:
- a source of pressurized air;
- a first pump unit including a first pump chamber, a first air chamber and a first end of stroke position;
- a second pump unit including a second pump chamber, a second air chamber and a second end of stroke position,
- an efficiency valve system pneumatically between the source of pressurized air and the first and second air chambers;
- a directional control valve pneumatically between the efficiency valve system and the first and second air chambers;
- a first air passage extending between the efficiency valve system and the directional control valve;
- a second air passage extending between the efficiency valve system and the directional control valve, the directional control valve shifting at the end of stroke positions to control air communication from the first and second air passages to the first and second air chambers, respectively, the efficiency valve system including a first valve position defining unrestricted air communication between the source of pressurized air and the first air passage and restricted air communication between the source of pressurized air and the second air passage and a second valve position defining unrestricted air communication between the source of pressurized air and the second air passage and restricted air communication between the source of pressurized air and the first air passage, the efficiency valve system shifting between the first and second valve positions before the directional control valve has shifted.
4 more elements
An air-driven pump comprising:
- a source of pressurized air;
- a first pump unit including a first pump chamber, a first air chamber, a first divider between the first pump chamber and the first air chamber and a first end of stroke position of the first divider;
- a second pump unit including a second pump chamber, a second air chamber, a second divider between the second pump chamber and the second air chamber and a second end of stroke position of the second divider;
- an efficiency valve system pneumatically between the source of pressurized air and the first and second air chambers;
- a directional control valve pneumatically between the efficiency valve system and the first and second air chambers;
- a first air passage extending between the efficiency valve system and the directional control valve;
- a second air passage extending between the efficiency valve system and the directional control valve, the directional control valve shifting at the end of stroke positions to control air communication from the first and second air passages to the first and second air chambers, respectively, the efficiency valve system including a first valve position defining unrestricted air communication between the source of pressurized air and the first air passage and restricted air communication between the source of pressurized air and the second air passage and a second valve position defining unrestricted air communication between the source of pressurized air and the second air passage and restricted air communication between the source of pressurized air and the first air passage, the efficiency valve system shifting between the first and second valve positions before the directional control valve has shifted.
4 more elements
An air-driven pump comprising:
- a source of pressurized air;
- a first pump unit including a first pump chamber and a first air chamber;
- a second pump unit including a second pump chamber and a second air chamber,
- an efficiency valve system including a first air passage pneumatically between the source of pressurized air and the first air chamber and a second air passage pneumatically between the source of pressurized air and the second air chamber;
- a directional control valve pneumatically between the first air passage and the first air chamber and pneumatically between the second air passage and the second air chamber, the directional control valve selectively controlling air communication from the first and second air passages to the first and second air chambers, respectively, the efficiency valve system selectively restricting air communication between the source of pressurized air and the first and second air passages, unrestricted air communication and restricted air communication between the source of pressurized air and the directional control valve being concurrently in communication through the first and second air passages.
2 more elements
Dependencies are inferred from the claim text.