U.S. patent application number 09/985739 was filed with the patent office on 2002-05-09 for jar with conical neck.
This patent application is currently assigned to LUMSON S.p.A. Invention is credited to Moretti, Matteo.
Application Number | 20020053552 09/985739 |
Document ID | / |
Family ID | 11446090 |
Filed Date | 2002-05-09 |
United States Patent
Application |
20020053552 |
Kind Code |
A1 |
Moretti, Matteo |
May 9, 2002 |
Jar with conical neck
Abstract
A jar, in particular for cosmetic creams, having a neck which
externally and also at least partly internally is bounded by a
conical surface of diameter decreasing towards the free edge of the
neck from which there projects at least one spiral thread for the
screwed closure of the jar by a lid, said thread having a height
which increases towards the free edge of the neck such that its
cusp is inscribable on a substantially cylindrical surface
Inventors: |
Moretti, Matteo; (Crema,
IT) |
Correspondence
Address: |
OBLON SPIVAK MCCLELLAND MAIER & NEUSTADT PC
FOURTH FLOOR
1755 JEFFERSON DAVIS HIGHWAY
ARLINGTON
VA
22202
US
|
Assignee: |
LUMSON S.p.A
Via Tesino, 62/64
CAPERGNANICA
IT
26010
|
Family ID: |
11446090 |
Appl. No.: |
09/985739 |
Filed: |
November 6, 2001 |
Current U.S.
Class: |
215/44 |
Current CPC
Class: |
B65D 1/40 20130101; B65D
1/10 20130101 |
Class at
Publication: |
215/44 |
International
Class: |
B65B 007/28 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 8, 2000 |
IT |
MI2000A002410 |
Claims
1. A jar for containing creamy substances, comprising a hollow body
accessible through the opening of a neck projecting from the hollow
body itself and bounding an aperture the inner diameter of which is
less than the inner diameter of the hollow body, characterised in
that said neck is externally and also at least partly internally
bounded by a conical surface of diameter decreasing towards the
free edge of the neck from which there projects at least one spiral
thread for the screwed closure of the jar by a lid, said thread
having a height which increases towards the free edge of the neck
such that the cusp of the thread is inscribable on a substantially
cylindrical surface
Description
[0001] The present invention relates to a jar, in particular a
glass jar intended to contain cosmetic creams or other substances
in pasty form such as jams or the like.
[0002] Cosmetic creams (or other substances in creamy or pasty form
intended, for example, for food use) are contained and preserved in
glass or plastic jars. These jars each have a neck bounding a mouth
or opening (through which the substance present in the jars can be
withdrawn) which is closable by a lid screwable onto a spiral
thread projecting from the outer surface of the neck.
[0003] The jars considered herein are those (the most commonly
used) having a neck, the mouth or opening of which has a diameter
less than the inner diameter of the jar itself.
[0004] The necks of known jars are bounded by cylindrical surfaces
both inside and outside: it follows that where the inner surface of
each neck joins the inner surface of the body of the jar an
undercut is created immediately below the inner cylindrical surface
of the neck.
[0005] This results in consequences very damaging for the user,
because it is very difficult (if not impossible) to withdraw the
substance which has collected at this undercut where, inter alia,
air bubbles may form.
[0006] For example, the creamy substance (jam, or other food
substance) present at the aforesaid undercut cannot be withdrawn
with a teaspoon. However the most notable case is when the jar
contains a cosmetic cream (naturally very costly) which is usually
withdrawn with a finger inserted into the jar through its mouth:
often, it is impossible to reach with the finger to "scrape" the
inner surface of the jar immediately below the base of the neck,
i.e. where the undercut between the neck and body of the jar
lies.
[0007] The main object of the present invention is therefore to
provide a jar, the inner surface of which is easily reachable
through the opening or mouth of the jar neck.
[0008] This jar has a hollow body accessible through the opening of
a neck projecting from the hollow body itself and bounding an
aperture the inner diameter of which is less than the inner
diameter of the hollow body, characterised in that said neck is
externally and also at least partly internally bounded by a conical
surface of diameter decreasing towards the free edge of the neck
from which there projects at least one spiral thread for the
screwed closure of the jar by a lid, said thread having a height
which increases towards the free edge of the neck such that the
cusp of the thread is inscribable on a substantially cylindrical
surface
[0009] To clarify the understanding of the structure and
characteristics of the jar of the invention, an embodiment thereof
is described hereinafter by way of non-limiting example with
reference to the accompanying drawing, in which:
[0010] FIG. 1 is a side elevation of a jar of the invention, shown
partly in full view and partly in section;
[0011] FIG. 2 is a section through a portion of the jar of FIG. 1
on an enlarged scale;
[0012] FIG. 3 is similar to FIG. 2, but represents a portion of a
jar having a known traditional structure.
[0013] Reference will firstly be made to FIG. 1 and FIG. 2 which
show a jar 1 (for example of glass) intended to contain cosmetic
creams.
[0014] The jar comprises a hollow body 2 accessible through the
opening of a neck 3 bounding an aperture the inner diameter of
which is less than the inner diameter of the body 2, as can be
clearly seen from the figures.
[0015] The neck 3, which must have a length "1" sufficient to
enable a lid 4, of which only a portion is shown in FIG. 1, to be
screwed onto it, is characterised in that its outer surface 5 is
conical, with its diameter decreasing towards the free edge of the
neck, as clearly shown in FIG. 2. This enables the neck to be
formed such that a substantial part 6 of its inner surface furthest
from the mouth of the jar is also conical and forms a uniform
extension, without undercuts, towards the opening of the neck.
[0016] As can be seen from FIGS. 1 and 2, only a short end portion
of the inner surface of the neck is cylindrical.
[0017] From the outer conical surface 5 of the neck 3 there project
spiral threads 7 for the screwed closure of the jar by the lid 4.
The structure of the threads 7 differs from the usual threads in
that (as a consequence of the fact that said threads 7 extend from
a conical surface 5) the thread has a height that decreases
uniformly from the free end of the neck towards the base of the
neck, so that the cusp (i.e. the most outer edge) of the thread can
be inscribed on a cylindrical surface, as clearly seen from FIGS. 1
and 2. This enables the lid 4 to engage the jar neck 3 as soon as
the lid is rested on the neck and rotated on it.
[0018] With particular reference to FIG. 2 it is clear how each
point of the inner surface of the jar 1 is easily accessible (by
means of a finger or an implement such as a teaspoon) though the
mouth of the neck 3, so that the entire substance contained in the
jar can be easily and completely removed.
[0019] Reference will now be made to FIG. 3 which represents a
portion (equivalent to that of FIG. 2) of a jar of traditional
structure having a hollow body 10 from which there projects a neck
11 of traditional cylindrical shape.
[0020] As will be apparent, the entire inner surface 12 of the neck
11 has to be cylindrical, hence defining in the interior of the jar
an undercut "r" which is not reachable through the mouth of the
neck. It is therefore difficult or impossible to withdraw the
creamy substance collected at this undercut, which is deeper and
more inaccessible the greater the difference between the inner
diameters of the neck 11 and of the hollow body 10.
* * * * *