Dispenser for pasty substances

Claim 1

A dispenser in combination with and adapted for particular pasty substances comprising a tubular housing containing a particular pasty substance and defining a longitudinal axis, a piston mounted in said housing displaceably only in one direction constituting a discharging direction, a headpiece mounted on said housing, formed as a bellows and having an outer operating handle which is formed at said headpiece, the latter having a folding-bellows cover being compressible in a bellows-like manner in a direction of the piston, the headpiece having an interior wall including an interior side of said cover, a tubule is arranged in said cover and extends inclined at an acute-angle relative to the longitudinal axis of the tubular housing through said headpiece defining an inner section therein which over its entire length projects inwardly inside the bellows into the housing and terminates at an innermost end, said tubule has a dispenser-outlet opening at an outer end of the tubule and extends inwardly therefrom to said innermost end, the latter being formed with an inner open mouth end formed so as to be always completely openly exposed penetrating in and communicating the tubule with said pasty substance in said housing and headpiece in every position of the bellows, said tubule constituting the exclusive means of the dispenser for communicating the interior of said housing with the outside, said particular pasty substance completely fills the interior of said housing above said piston and above said innermost end of said tubule, surrounding said inner section of said tubule, to said interior wall of said headpiece and extends continuously through the always communicating openly exposed inner open mouth end into said tubule through said entire length of said inner section forming a pasty substance plug continuously connected to said pasty substance in said housing and headpiece, said inner section of said tubule and said inner open mouth end penetrating substantially deeply into the pasty substance in the interior of said housing and headpiece, said tubule, said piston and said housing being formed relative the particular pasty substance such that resistance against displacement in said one direction of the piston in said housing is smaller than resistance against displacement of the particular pasty substance in the tubule when said bellows is released after being compressed.