Manually-operated fluid dispenser and associated closure cap
US4883204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1046
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A manually-operated dispenser for user-controlled discharge of an internally-stored fluid includes a variable length assembly normally driven to its maximum longitudinal extension for substantially closing a fluid discharge opening and for fluid-tightly closing a vent opening disposed at opposite ends of an elongated housing, the fluid discharge opening being normally sufficiently closed so as to prevent discharge of stored fluid through the discharge opening but permitting predetermined bleeding of fluid from the housing interior through the discharge opening, a piston bounding an end of an internal fluid reservoir and operatively movable along the housing for volumetrically reducing the reservoir and for driving stored fluid toward and through the discharge opening, and an actuator assembly manually operable by the user for causing controlled foreshortening of the variable length assembly whereby the fluid discharge and vent openings are concurrently opened permitting the forced discharge of a correspondingly controlled volume of stored fluid. An associated dispenser end closure cap incorporates a movable shuttle assembly for protectively receiving and substantially fluid-tightly…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.