Opening device or preserve cans, tins and similar containers

Device for opening cans and the like, of the type having a ring on the lid for its opening, which is comprised of a body (1) with a curved surface, receiving at one end a lever arm (2) and a hook (3) susceptible of being coupled to the opening loop of the container, thereby enabling its controlled tearing; the curved structure body (1) has the shape of a curved plate which, by one end, is integral with the lever arm (2) with a curvature opposite to the plate.

BACKGROUND OF THE INVENTION 
The present Invention Patent is intended to make known a new device 
provided with advantageous features for the opening of certain types of 
preserve cans, tins and similar containers. 
As it is known, one of the traditionally-known types of preserve cans 
features a tear-off upper lid provided with a ring which is to be held 
with one hand in order to perform such function. However, given the 
tearing resistance which is sometimes shown by the lid, a certain rough 
action is required to open the can which involves a certain risk of small 
wounds on the user's hand, the projection of the contents out of the can, 
etc. 
The present Invention Patent is intended to overcome the above drawbacks by 
providing the means required to carry out the opening of such type of 
closing device in preserve cans in a very simple and practical way. 
SUMMARY OF THE INVENTION 
Essentially the present invention patent consists of a curved-type plate 
intended to lean against the lid to be opened with such plate being 
provided with a preferably-bent long upper arm and an end hook which is to 
be coupled to the lid ring thus allowing for a tilting motion of the 
curved plate when the ring is pulled by the hook thus ensuring an easy, 
controlled opening of the lid. Given the lever effect caused by the upper 
arm of the device, it is possible to easily adjust the force to be 
manually exerted in order to accomplish a smooth, well-controlled opening 
of the can. 
For the sake of a better understanding, a number of drawings which are 
explanatory but not limited to this device are enclosed as an example.

DESCRIPTION OF THE BEST MODES FOR CARRYING OUT THE INVENTION 
As shown in the drawings, this device is composed of a main element (1) in 
the shape of a curved plate or body which is coupled to a long lever or 
arm (2) which is also either curved or straight, preferably with the 
concavity in opposite direction to item (1). A hook (3) is coupled to such 
lever on the end adjacent to the coupling with plate (1) which is intended 
to be coupled to the ring of the can or container to be opened. The exact 
shape of plate (1) and lever (2) will vary since the basic structure is 
characterized by the curved shape of element (1) and the presence of lever 
(2) intended to multiply the manual opening effort. Likewise it is obvious 
that the arrangement of hook (3) is essential to the features of this 
Patent. 
As shown in figures enclosed, the device is applied in such way that the 
plate or sheet body (1) remains laid on the can or container to be opened 
(4), see FIGS. 5 and 6, with hook (3) coupled to ring (5) of such can. 
When an effort is exerted on the lever arm (2) which is represented by 
vertical vector (6), curved plate (1) performs a rolling movement over the 
lid (7) of the container (4) while ring (5) is pulled by hook (3) thus 
carrying out the removal of lid (7) from can (4) by tearing it off, i.e. 
by trying to open it. 
Given that the multiplying effect of lever or arm (2) is important as a 
function of its length, the effort made on ring (5) to open the container 
can be most important which means a fast and well-control led opening of 
the container. 
For the opening of cans and tins and the removal of crown-type caps, a 
variant of the present Invention is shown below which offers a number of 
advantages over what is presently known thanks to its original 
construction from which a number of different and convenient uses for the 
same purpose are derived. 
Essentially this device consists of a curved sheet body with one end 
provided with a slightly-backward curved handle which has an attachment 
provided with a small sheet projection located at the joining area of such 
handle with the curved body which is intended for the eventual opening of 
pressed-lid cans and also for suspending the rings when opening cans 
having expiration line on its upper face as well as preserve or similar 
cans of this type thus allowing to perform such opening in an easy way by 
tilting the opener over the surface of the can or tin to be opened. 
In addition, this device features a housing located at the curved portion 
next to the area where it is joined to the handle which is intended to 
permit an easy removal of crown-type caps. 
As it is shown in the figures, this device features a main body (1') with a 
general curved shape which is provided with a backward-directed handle 
(2') on one end from whose joining area a small attachment (8) is extended 
featuring a beak (9) on one end and a projecting flap (10) on the other 
end which is part of an attached component embedded in the opener body. 
The opener itself features a recess or housing (11) on the curved face (1') 
intended for opening crown caps. One side or such recess shows a straight 
edge (12) which is part of the same inserted piece which forms flap (10). 
Curved body (1') shows multiple small-size projections (13) which form a 
sensitively-arranged alignment on the opener symmetry plane. 
As already mentioned, flap (10) and straight edge (12) are part of a single 
sheet piece (14), see FIGS. 12, 13 and 14, which is inserted in the 
moulded body of the opener thus providing both the flap (10) for tearing 
off pressed-inserted lids and the straight edge (12) for opening crown 
caps. 
As can be seen in FIGS. 16 and 17, in case of a can or tin (15) provided 
with an opening ring (16) and expiration lines, the opener will operate in 
such way that one of the projections (13) is interposed against the 
peripheral edge (17) of the can or tin while ring (16) ramains suspended 
from expansion (9) so that when the opener is tilted over the upper face 
of the can or tin (15), the lid (18) is opened in a most convenient and 
easy way. 
For tearing off a pressed-inserted lid (19) of a can or tin (20), see FIGS. 
18 and 19, flat (10) will remain inserted under the peripheral flange (21) 
of the lid (19) thus allowing to perform the opening through a simple 
levering action. 
The application of the opener to crown cap openings can be seen in FIGS. 20 
and 21 which show how a bottle crown cap (23) remains housed into the 
recess or housing (11) featured by the opener with the above-described 
straight edge (12) interfering with the lower face of the crown cap (22) 
thus causing an easy opening of the crown cap through a simple tilting 
motion of the opener. 
Anything not affecting, altering, changing or modifying the essence of the 
above opening device will be variable of the purpose of this Invention 
Patent.