초록 ▼

The invention relates to a dispenser for paste-like products which is characterized by a particular simple construction of its dispensing mechanism requiring a reduced number of components. Integrally connected to a supply container of the dispenser is a cylinder body slidably supporting a dispensin

The invention relates to a dispenser for paste-like products which is characterized by a particular simple construction of its dispensing mechanism requiring a reduced number of components. Integrally connected to a supply container of the dispenser is a cylinder body slidably supporting a dispensing piston connected to an actuator cap guided on the cylinder body. The dispensing piston cooperates with the cylinder body to define a pump chamber communicating with the interior of the supply container through a non-return valve. On the other side the bottom portion of the dispensing piston is provided with a non-return valve for establishing communication of the pump chamber with a tubular section carrying the dispensing piston and at the same time acting as an outlet passage for the paste-like product. The tubular section is integrally connected to the actuator cap, the latter being biased towards a rest position by a return spring supported on a fixed counterstop, particularly on the cylinder body.

대표청구항 ▼

A dispenser for paste-like products comprising a cylindrical container for storing a supply of paste-like products to be dispensed, said cylindrical container including a bottom portion having a slidable follower piston and upper portion having a dispensing means for dispensing the paste-like produc

A dispenser for paste-like products comprising a cylindrical container for storing a supply of paste-like products to be dispensed, said cylindrical container including a bottom portion having a slidable follower piston and upper portion having a dispensing means for dispensing the paste-like product, said dispensing means comprising: (a) a first non-return valve (16) provided in an upper partition wall of the cylindrical container for controlling communication between the interior of the container and a pump chamber through a first opening (12) formed in said partition wall (11); (b) a guide sleeve arrangement (6) surrounding said first opening (12) and having first non-return valve (16) hingedly connected thereto, said guide sleeve arrangement extending upwardly from said partition wall to define circumferentially said pump chamber (24), said guide sleeve arrangement (6) having inner and outer circumferential guide sleeves, said first non-return valve being hingedly connected to said inner guide sleeve; (c) a cup-shaped actuator cap (7) having a peripheral downwardly projecting outer wall portion and an inner tubular section (19), the latter forming a discharge channel having a laterally outwardly opening outlet passage, wherein: (1) said outer wall portion of the actuator cap (7) is slidably engaged with the outer circumferential guide sleeve of the guide sleeve arrangement (6), both being provided with co-operating stop projections (26, 27) to limit axial upward movement of the actuator cap (7), (2) said outer guide sleeve being integral with said upper partition wall of said container, and providing an upper radially outwardly projecting rim portion (25) spaced from the stop projection (26) of the guide sleeve arrangement (6) to establish a circumferential guide surface engaging an inner cylindrical guide surface of the outer wall portion of the actuator cap, (3) said tubular section of the actuator cap having a downwardly extending portion having a diameter greater than that of said laterally opening outlet passage and supporting a dispensing piston (22) to keep the piston (22) slidably engaged with said inner circumferential guide sleeve of said guide sleeve arrangement (6), thereby defining a space forming the pump chamber (24), (4) said dispensing piston (22) having a second opening (29) in register with the tubular section of the actuator cap (7), (5) said second opening (29) being controlled by a second non-return valve means (3) for controlling communication between the pump chamber upstream thereof and the discharge channel of the actuator cap downstream thereof; and (d) a return spring (32) extending between a stationary portion of the inner guide sleeve and the actuator cap (7) to bias said actuator cap (7) into a rest position.