US 4,984,923 A · Liquid applicator with axial value actuation

Abstract

In the application instrument provided in accordance with the present invention, an operating member inserted in the middle cylinder so as to be movable backward and forward in the axial direction thereof is operated so that a valve mechanism provided in the front portion of the middle cylinder is operated to supply the penpoint with the applied liquid stored in the rear portion of the middle cylinder. The valve mechanism includes a valve seat having a valve hole, a valve spindle provided with a valve element for opening and closing the valve hole, and a stretchable member for moving the valve spindle backward and forward. The stretchable member is elongated and shortened in the axial direction of the middle cylinder as the bent portions of the bent arms are bent less and more, respectively. The operating member is disposed behind the valve mechanism. An operating element provided at the rear end of the middle cylinder is operated to move the operating member forward to push the bent portions of the bent arms to elongate the stretchable member so that the valve spindle is moved backward to open the valve hole to supply the applied liquid to the penpoint.

Claims8

Dependent claims

A liquid applicator for dispensing liquid from a middle cylinder thereof to a penpoint thereof comprising:

a middle cylinder;
an operating member within said middle cylinder and movable forward and backward axially within said middle cylinder;
a valve mechanism provided in a front portion of said middle cylinder;
and a penpoint positioned to receive liquid dispensed from a rear portion of said middle cylinder via said valve mechanism;
said valve mechanism comprising, a valve seat having a valve opening;
a valve spindle having a valve element for blocking and opening said valve opening as said valve spindle is moved forward toward said valve seat and backward away from said valve seat, respectively;
a stretchable member having a forward end connected to said valve seat, a rear end connected to said valve spindle, and a stretchable central portion;
said valve seat being fixed with respect to said middle cylinder;
an operating element for interacting with said operating member to move said operating member axially;
said operating member having an engaging portion which engages said stretchable portion to elongate said stretchable member when said operating member is moved forward axially to cause said rear end of said stretchable member and said valve spindle to move axially backward thereby opening said valve opening.

7 more elements

Dependencies are inferred from the claim text.

Liquid applicator with axial value actuation

Life of this patent

Liquid applicator with axial value actuation

Life of this patent

Abstract

Claims8