ADHESIVE DISPENSER

DEBITEUR DE COLLE LIQUIDE

English Abstract

ABSTRACT
A dispenser for manual application of liquid
adhesive comprises a reservoir, a dispensing head and a
flexible neck connecting the head to the reservoir.
The head has an adhesive-spreading surface of
rectangular shape, and an opening for dispensing
adhesive is located in the centre of the spreading
surface.
The neck is resiliently flexible, and is designed
so as to be flexible in any direction to aid the
spreading of adhesive.

Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An adhesive dispenser comprising:
a liquid adhesive reservoir.
a applicator body having a unitary dispensing head having
an adhesive spreading surface and an opening in or near
the spreading surface for dispensing adhesive,
a reduced flexible neck between said head and shoulder
portion said neck being flexible in any direction with
respect to said applicator body,
and means for connecting said applicator body to said
reservoir.
2. An adhesive dispenser according to claim 1, in which
the neck is resiliently flexible.
3. An adhesive dispenser according to claim 1, in which
the neck is longitudinally compressible.
4. An adhesive dispenser according to claim 1, in which
the dispensing head and neck are integral parts of a moulded
component, the neck being flexible by virtue of having thinner
walls than the remainder of the component.
5. An adhesive dispenser according to claim 1 in which
the spreading surface includes at least two non-parallel spreading
edges of unequal lengths.
6. An adhesive dispenser according to claim 5, in which
the spreading edges are mutually perpendicular.

7. An adhesive dispenser comprising;
a liquid adhesive reservoir,
a applicator body having a unitary dispensing head having
an adhesive spreading surface which has at least two
non-parallel spreading edges of unequal lengths, and an
opening in or near the spreading surface for dispensing
adhesive,
a reduced flexible neck between said head and applicator
body said neck being flexible in any direction with
respect to said applicator body,
and means for connecting said applicator body to said
reservoir.
8. An adhesive dispenser according to claim 7, in which
the spreading edges are mutually perpendicular.
9. An adhesive dispenser according to claim 7 in which
the neck is resiliently flexible.
10. An adhesive dispenser according to claim 7, in
which the neck is longitudinally compressible.
11. An adhesive dispenser according to claim 7, in which
the dispensing head and neck are integral parts of a moulded
component, the neck being flexible by virtue of having thinner
walls than the remainder of the component.
12. An adhesive dispenser according to claim 7, in
which the spreading surface includes at least two non-parallel
spreading edges of unequal lengths.
13. An adhesive dispenser according to claim 12, in which
the spreading edges are mutually perpendicular.

Description

S617
ADHESIVE DISPENSER
The present invention relates to dispensers for
the manual application of liquid adhesives to work
pieces and work surfaces.
According to the present invention in one aspect
there is provided an adhesive dispenser comprising:
a liquid adhesive reservoir,
a applicatoc body having a unitary dispensing head havinq
an adhesive spreading 6ueface and an opening in or neac
the spreading sur~ace for dispensing adhesive,
a reduced ~lexible neck between said head and shouldec
portion said neck being ~lexible in any dicection with
respect to said applicator body,
and means foc connecting said applicator body to said
reservoir.
Dispensers according to the invention enable rapid
and controlled spreading of adhesive with the spreading
surface maintaining good contact with the work-piece,
due to flexing of the neck, despite variations in the
angle at which the device is held.

5617
Suitably the neck is designed such that it may be
flexed in any direction. Preferably the neck is
resiliently flexible and more preferably the neck is
formed of a resilient material. The neck may also be
longitudinally compressible. Most preferably the
dispensing head and neck are integral parts of a
moulded component, the neck being flexible by virtue of
having thinner walls than is general for the rest of
the component, the component being moulded from a
synthetic rubber or thermoplastic.
According to a second aspect of the present i~vention,
an adhesive dispenser is produced which comprises
An adhe6ive di6pen6er compri~ing:
a liquid adhe6ive rese~voir,
a applicator body having a unitary di6pen6ing head having
an adhe6ive 6preading 6urface which ha6 at lea6t two
non-parallel 6preading edge6 of unequal length6, and an
opening in or near the 6preading 6urface for di6pen6ing
adhe6ive,
a ~educed flexible neck between 6aid head and applicator
body said neck being flexible in any direction with
re6pect to 6aid applicator body,
and mean6 f or connecting 6aid applicator body to 6aid
re6ervoir.
Dispensers having two or more spreading edges of
different lengths can be used to spread wider and
narrower bands of adhesive, thus, for instance, a wide
band is spread by drawing the dispenser across the
work-piece in a direction perpendicular to the wider
spreading edge.
"~
. , ~,, i

i225617
- 2a -
Preferably the spreading edges are mutually
perpendicular and most preferably the spreading surface
is rectangular thus presenting two pairs of opposed
spreading edges.
Suitably the opening for dispensing adhesive is
situated in the centre of the spreading surface.
Preferably the opening is situated at the bottom of a
recess in the spreading surace and most preerably it
is in the centre of a substantially rectangular recess
in a rectangular spreading surface.

- - 3 -
1 Preferably the dispensers of the invention combine
both the above aspects and have a dispensing head with
two or more spreading edges the head being mounted on a
flexible neck.
The invention will now be described by way of
Example with reference to the accompanying drawings in
which
Fig 1 is a front elevation of a dispenser of the
invention.
0 Fig 2 is an enlarged and truncated side elevation of
the dispenser, the upper part being sectioned on
AA of Fig 1.
Fig 3 is a perspective view of the dispenser also
showing a closure with partial sectioning to
display interior detail.
Referring to the drawings, Fig 1 shows a dispenser
of the invention comprising a reservoir 1, a flexible
neck 2 and a dispensing head 3.
As shown in Fig. 2, the dispenser is a two component
moulded construction, the upper component is the applicator
or body 6 comprising the head, neck 2, shoulder 15 bearing
a downwardly depending internal sealing ring 16, and a
skirt 7 bearing an internal rib 8.
The lower component comprises the reservoir 1 and
a mating and sealing formation 10 which engages the rib
8 in a snap-fit and is forced into sealing contact with
the ring 16.

12Z~6~7
1 The neck 2 is flexible due to the upper component
6 being of thinner material in the region of the neck 2
than is general in the rest of the upper component 6.
Shoulder 15 limits the angle through which the neck 2
may be bent and limits the degree of longitudinal
compression of the neck 2 by engaging the lower surface
of the head 3.
The dispensing head 3, as shown in Fig 3 comprises
a rectangular spreading surface 4 having long and short
edges 12 and 13, and a dispensing hole 5 set in a
recess 11 in the surface 4,
The dispenser may be closed by a cap, such as that
shown in Fig 3 having a skirt 9 for engaging the skirt
7 of the dispenser and a projection 14 for closing the
hole 5.
In use adhesive is expelled from the reservoir (by
gravity or by squeezing the reservoir), it flows
through the neck 2 and out through the hole 5 into the
recess 11. Adhesive is then applied by drawing the
spreading surface 4 across the work-piece, When drawn
perpendicular to the long edge 12, the dispenser leaves
a wide band of adhesive. When drawn perpendicular to
the short edge 13 it applies a narrow band. During
these operations the neck 2 flexes to maintain good
contact with the surface, shoulder 15 preventing the
neck 2 being compressed or bent to such an angle that
flow of adhesive through the neck 2 is restricted.