초록 ▼

A two-piece, snap-action closure includes a body and a separate lid. A biasing member is provided on the body to engage the rear portion of the lid to bias the lid to the full closed position or to the full open position from a bistable over center point. In a preferred embodiment, the biasing membe

A two-piece, snap-action closure includes a body and a separate lid. A biasing member is provided on the body to engage the rear portion of the lid to bias the lid to the full closed position or to the full open position from a bistable over center point. In a preferred embodiment, the biasing member is a cantilevered tab. In another embodiment the biasing member is a resiliently flexible member that presents a convex configuration toward the lid in the closed position. In one embodiment, the lid is pivotally mounted to the body with pivot members having oppositely facing flat sides which are received in rectangular receiving apertures. In another embodiment, the pivot members are cylindrical and are received in semi-cylindrical receiving apertures. In a preferred form of the closure, an angled cam surface is provided on the body to guide each pivot member into the receiving apertures.

대표청구항 ▼

A two-piece snap-action closure which can be readily assembled for use on a container defining an opening communicating with the container interior, said closure comprising: a body for being mounted to said container over said container opening, said body defining a dispensing orifice for communicat

A two-piece snap-action closure which can be readily assembled for use on a container defining an opening communicating with the container interior, said closure comprising: a body for being mounted to said container over said container opening, said body defining a dispensing orifice for communicating at said container opening with said container interior, and said body further defining an elastically deflectable biasing member having an engaging surface; a lid separate from said body and disposed on said body for pivoting between a closed position occluding said dispensing orifice and an open position spaced away from said dispensing orifice, said lid including a convex cam surface for engaging said biasing member engaging surface as said lid is pivoted between said open and closed positions; pivot means on one of said lid and body; receiving means on the other of said lid and body for receiving said pivot means to pivotally mount said lid to said body whereby said biasing member is most stressed when said lid is at an over center point between said open and closed positions to thereby bias said lid toward one of said open and closed positions; and said biasing member is a tab that is cantilevered from said body and that defines a generally flat engaging surface for being engaged by said lid cam surface.