Back to results
US 5,961,299 AGranted
Fluid injector pump with interchangeable reservoir
AssigneeOil-Rite Corporation
InventorsDonald G. Gruett, Scott Wright
Life of this patent
Estimating the term…
Abstract
A pneumatically-operated pump is provided that includes a body having a central bore with a liquid chamber for a slidable piston injector, a chamber for a removable reservoir, and an inlet and outlet for a gas. A priming conduit carries liquid from the reservoir mounted on the body to the injector in the liquid chamber which injects the liquid into a liquid line coupled to a fitting on the pump. The liquid line carries lubricant or other liquid from the pump (e.g., air tool lubricator) to an air tool or other article. A priming pump is mounted on the body and is capable of delivering a predetermined amount of liquid from the reservoir to the liquid chamber. The priming pump is used to fill the liquid line with liquid.
Claims25
A device for metering a liquid, comprising:
- a) a body having
- an inlet chamber and an outlet chamber;
- a central bore with a metering chamber having an end disposed in the outlet chamber;
- a central channel with an inlet and an outlet for a gas;
- a bore for receiving a removable reservoir for containing a liquid, the bore having surfaces and a base with an opening;
- and
- a priming conduit in fluid flowing relation with the opening in the base of the threaded bore and the liquid chamber of the central bore;
- b) a gas piston disposed within the inlet chamber adjacent to the inlet of the central channel;
- and
- c) an injector connected to the gas piston, and disposed within the metering chamber;
- the injector movable in correspondence to the motion of the gas piston, adapted for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber, and responsive to air flow.
8 more elements
A liquid metering device comprising:
- a body having an inlet chamber and an outlet chamber;
- a central bore with a metering chamber that is positioned between the inlet chamber and the outlet chamber;
- a single central channel for carrying a gas, aligned substantially parallel to the central bore, and having an inlet and an outlet;
- a mechanism for coupling a removable reservoir to the body;
- a priming conduit in fluid flowing relation with the mechanism for coupling a removable reservoir to the body;
- a gas piston disposed within the inlet chamber having at least one bore;
- a disc-shaped plate for controlling gas flow through the bore in the gas piston;
- and
- an injector piston coupled to the gas piston and disposed within the metering chamber, the injector piston movable in correspondence to the motion of the gas piston, adapted for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber, and directly responsive to air flow.
6 more elements
A device for metering a liquid, comprising:
- a body having an inlet chamber and an outlet chamber;
- a central bore with a metering chamber that is positioned between the inlet chamber and outlet chamber;
- a central channel with an inlet and an outlet for a gas;
- a mechanism for coupling a removable reservoir to the body;
- a priming conduit in fluid flowing relation with the mechanism for coupling a removable reservoir to the body;
- a gas piston disposed within the inlet chamber;
- and
- an injector piston coupled to the gas piston and disposed within the metering chamber, the injector piston movable in correspondence to the motion of the gas piston, adapted for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber, and directly responsive to air flow.
5 more elements
A device for metering a liquid, comprising:
- a body having an inlet chamber and an outlet chamber;
- a central bore with a metering chamber that is positioned between the inlet chamber and outlet chamber;
- a member for coupling a removable reservoir to the body, and adapted for receiving and interchanging a plurality of removable and different sized reservoirs, the coupling member being a chamber having surfaces and a base with an opening;
- a priming conduit in fluid flowing relation with the opening in the base of the coupling member and the metering chamber of the central bore;
- and
- an injector piston disposed within the metering chamber for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber.
3 more elements
A method of delivering a liquid to an object, the method comprising the steps of:
- providing a device for metering a liquid, the device being composed of:
- a body with an inlet chamber and an outlet chamber;
- a central bore with a metering chamber positioned between the inlet chamber and outlet chamber;
- a central channel with an inlet and an outlet for a gas;
- a mechanism for coupling a reservoir to the body;
- a priming conduit in fluid flowing relation with the coupling mechanism;
- a gas piston disposed within the inlet chamber and coupled to an injector piston that is disposed within the metering chamber;
- the injector piston movable in correspondence to the motion of the gas piston, adapted for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber, and directly responsive to air flow;
- and a priming mechanism mounted in the body with a first end in contact with the central bore to control liquid flow from the priming conduit into a liquid line mounted in the body;
- coupling a liquid reservoir for holding the liquid to the body of the liquid metering device;
- mounting a liquid line in the body of the liquid metering device, in fluid flowing relation with the metering chamber;
- the liquid line for delivering liquid to the object;
- attaching a gas line for supplying gas to the liquid metering device, to the gas inlet of the body;
- activating the priming mechanism to fill the liquid line with liquid;
- and
- activating air flow through the gas line into the liquid metering device to effectuate movement of the gas piston and the injector piston whereby liquid is delivered into the liquid line and to the object.
13 more elements
A method of delivering a liquid to an object, the method comprising the steps of:
- providing a device for metering a liquid, the device being composed of:
- a body with an inlet chamber and an outlet chamber;
- a central bore with a metering chamber positioned between the inlet chamber and outlet chamber;
- a central channel with an inlet and an outlet for a gas;
- a mechanism for coupling a reservoir to the body;
- a priming conduit in fluid flowing relation with the coupling mechanism;
- a gas piston disposed within the inlet chamber and coupled to an injector piston that is disposed within the metering chamber;
- the injector piston movable in correspondence to the motion of the gas piston, adapted for delivering a predetermined amount of liquid into the metering chamber and into a liquid line disposed in the outlet chamber, and directly responsive to air flow;
- coupling a liquid reservoir for holding the liquid to the body of the liquid metering device;
- mounting a liquid line in the body of the liquid metering device, in fluid flowing relation with the metering chamber;
- the liquid line for delivering liquid to the object;
- attaching a gas line for supplying gas to the liquid metering device, to the gas inlet of the body;
- and
- activating air flow through the gas line into the liquid metering device to effectuate movement of the gas piston and the injector whereby liquid is delivered into the liquid line and to the object;
- with less than about 1/1000th ml liquid being delivered to the object.
12 more elements
Dependencies are inferred from the claim text.