Leak-free airless container having piston device
OwnerPriska I. Diazinventor
Life of this patent
Estimating the term…
Abstract
An airless container includes: an elongated shaft having an open top and an open bottom and having a constant internal cross-section, and having attachment means for securing a fastening collar thereto; a fastening collar; a liquid outlet piece; a piston to sealably and moveably fit within the elongated shaft, the piston having external sides with a peripheral upper blade and a peripheral lower blade, each of said peripheral upper blade peripheral lower blade having a plurality of peripheral ridges running perpendicular to the elongated shaft elongation direction.
Claims15
An airless container, which comprises:
- a container elongated shaft having at least one side wall, an open top and an open bottom;
- a piston having a top view footprint outer perimeter consistent with said elongated shaft internal cross-section so as to sealably and moveably fit within said open bottom of said elongated shaft, said piston having external sides with a peripheral upper blade and a peripheral lower blade, each of said peripheral upper blade peripheral lower blade having a plurality of peripheral ridges running perpendicular to said elongated shaft elongation direction.
An airless container, which comprises:
- a container elongated shaft having at least one side wall, an open top and an open bottom;
- a piston having a top view footprint outer perimeter consistent with said elongated shaft internal cross-section so as to sealably and moveably fit within said open bottom of said elongated shaft, said piston having external sides with a peripheral upper blade and a peripheral lower blade, each of said peripheral upper blade peripheral lower blade having a plurality of external and internal peripheral ridges running perpendicular to said elongated shaft elongation direction.
An airless container, which comprises:
- a container;
- a piston having a top view footprint outer perimeter consistent with the container, wherein said piston has external sides with a peripheral upper blade and a peripheral lower blade, each of said peripheral upper blade peripheral lower blade having a plurality of external and internal peripheral ridges running perpendicular to said elongated shaft elongation direction.
Dependencies are inferred from the claim text.