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US 6,402,411 B2Granted
Fluid delivery system
AssigneeBerol Corporation
InventorsJean L. Spencer, Crispin M. Miller, John M. Fritz, John Thompson
Life of this patent
Estimating the term…
Abstract
A hand-held fluid delivery system includes a rigid body, a collapsible enclosure within the body, a fluid (e.g., correction fluid) within the enclosure, and a delivery end in communication with the collapsible enclosure. The delivery system preferably includes a spring that applies pressure to deliver fluid from the collapsible enclosure to the delivery end.
Claims12
A hand-held fluid delivery system, comprising
- a rigid body including a cavity;
- a collapsible enclosure within the cavity;
- a fluid within the collapsible enclosure;
- a fluid delivery end in communication with the collapsible enclosure;
- and
- a spring within the cavity that applies continuous pressure on the collapsible enclosure to deliver fluid from the collapsible enclosure through the delivery end to a substrate,
- wherein the spring has two curved free arms joined at a central point without an intervening segment, the two free arms making up an entire effective length of the spring, the effective length being generally arcuate in longitudinal section.
4 more elements
A method of applying a correction fluid to a substrate, comprising:
- applying continuous pressure with a spring to a collapsible enclosure containing a correction fluid within a rigid body to cause the correction fluid to pass from the collapsible enclosure through a fluid delivery end and onto the substrate;
- wherein the spring has two curved free arms joined at a central point without an intervening segment, the two free arms making up an entire effective length of the spring, the effective length being generally arcuate in longitudinal section.
Dependencies are inferred from the claim text.