IT1254484B - Small hand pump for dispensers of liquid or creamy substances - Google Patents
Small hand pump for dispensers of liquid or creamy substancesInfo
- Publication number
- IT1254484B IT1254484B ITMI920454A ITMI920454A IT1254484B IT 1254484 B IT1254484 B IT 1254484B IT MI920454 A ITMI920454 A IT MI920454A IT MI920454 A ITMI920454 A IT MI920454A IT 1254484 B IT1254484 B IT 1254484B
- Authority
- IT
- Italy
- Prior art keywords
- stem
- piston
- hollow body
- dispensers
- liquid
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- 244000273618 Sphenoclea zeylanica Species 0.000 abstract 1
Abstract
The pump 10 for dispensers of liquid or creamy substances comprises a hollow body 12 of cylindrical shape, open at both ends, a non-return valve 14 that closes one of these ends, a hollow stem 20 projecting from the other end of the hollow body 12 through a circular hole 18 provided in a closing part 16. The stem 20 carries a dispensing button 32 fitted with a delivery nozzle 36 communicating with the inside of the stem 20. Inside the hollow body 12 is a sealed piston 38, coaxial with the stem 20, that can move in both directions that is able to move on the stem 20 between two predetermined positions. The piston 38 together with the valve 14, at the lower end of the stem 20 and the said wall 40 of the hollow body 12 form a pressure chamber 44 that is in communication with the delivery nozzle 36 when the piston 38 is in its rearmost position on the stem, while the communication is interrupted when the piston is in its foremost position. The pump also includes a primary spring 46 acting between the hollow body 12 and the piston 38 to bring the latter to its foremost position on the stem 20, and a secondary spring 48 to bring the stem 20 to its position of maximum projection from the hollow body 12. The secondary spring 48 also acts on the piston 38 in opposition to the primary spring 46. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI920454A IT1254484B (en) | 1992-02-28 | 1992-02-28 | Small hand pump for dispensers of liquid or creamy substances |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI920454A IT1254484B (en) | 1992-02-28 | 1992-02-28 | Small hand pump for dispensers of liquid or creamy substances |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI920454A0 ITMI920454A0 (en) | 1992-02-28 |
ITMI920454A1 ITMI920454A1 (en) | 1993-08-28 |
IT1254484B true IT1254484B (en) | 1995-09-25 |
Family
ID=11362200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI920454A IT1254484B (en) | 1992-02-28 | 1992-02-28 | Small hand pump for dispensers of liquid or creamy substances |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1254484B (en) |
-
1992
- 1992-02-28 IT ITMI920454A patent/IT1254484B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITMI920454A0 (en) | 1992-02-28 |
ITMI920454A1 (en) | 1993-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950228 |