LATERALLY-ACTUATED DISPENSER WITH ONE- WAY VALVE FOR STORING AND DISPENSING METERED AMOUNTS OF SUBSTANCES

Title:

LATERALLY-ACTUATED DISPENSER WITH ONE- WAY VALVE FOR STORING AND DISPENSING METERED AMOUNTS OF SUBSTANCES

Document Type and Number:

WIPO Patent Application WO2006037112

Kind Code:

A3

Abstract:

A dispenser for dispensing a substance, such as a pharmaceutical, ophthalmic, dermatological, cosmeceutical, cosmetic or other product, has a body defining a variablevolume storage chamber for storing the product. A dispensing portion of the dispenser is connected with the body and defines a bore coupled in fluid communication with the storage chamber for receiving substance therefrom, and an outlet aperture coupled in fluid communication with the bore. A one-way valve of the dispenser includes an axiallyextending valve seat and an axially-extending flexible valve cover seated on the valve seat and defining a normally-closed, axially-extending seam therebetween forming a fluid-tight seal between the valve cover and valve seat. The flexible valve cover is movable relative to the valve seat and the seam is connectable in fluid communication with the outlet aperture to allow the passage of substance through the seam and out of the dispenser. The dispenser further comprises an actuator and piston assembly including a piston receivable within the bore, a manually-engageable actuator connected to the piston for moving the piston between first and second positions relative to the bore to dispense substance within the bore through the outlet aperture, and an integral, dome-shaped spring coupled to at least one of the piston and the actuator for biasing the piston in a direction from one of the first and second positions toward the other.

Inventors:

PY DANIEL (US)
CHAN JULIAN (US)
FELLOWS DAVID (US)
HARTMAN ERIC E (US)
HE BING (US)

Application Number:

PCT/US2005/035107

Publication Date:

December 28, 2006

Filing Date:

September 27, 2005

Export Citation:

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Assignee:

MEDICAL INSTILL TECH INC (US)
PY DANIEL C (US)
CHAN JULIAN (US)
FELLOWS DAVID (US)
HARTMAN ERIC E (US)
HE BING (US)

International Classes:

A46B15/00; A46B11/00; B67D7/58

Foreign References:

US4874117A

1989-10-17

Other References: