Patent Description:
The term "weathertight wing" refers to a door or window wing that allows the selective closing of an aperture or opening in an essentially airtight manner, guaranteeing thermal and acoustic sealing, as well as tightness against moisture and air drafts.

Weathertight windows and doors are known, which comprise a fixed frame, formed with a plurality of elements defining at least one upper crosspiece substantially horizontal and a pair of vertical side elements adapted to be associated to an opening made on a wall, for example separating an internal space from an external space, and at least one wing that allows the selective and airtight closing of the opening to which said door frame is associated.

For this purpose, said window or door is provided with appropriate gaskets or sealing strips of conventional construction, made with elastic polymeric material or rubber and/or of magnetic type, placed on the frame and/or on the door or window wing so that, in the closed position, the wing is pressed against them and activates them so that they provide the desired sealing effect.

The wing can then be moved by the user, by means of a control member, for example a handle mounted integrally to the wing, between a closed position, wherein it lies in abutment against the sealing strips, closing the opening completely, and an opening position, wherein at least one portion of the opening remains free, by means of different operative modes; there are in fact wings with "abutting" opening, that is hinged on a vertical member of the window or door frame so as to be rotatable around a vertical axis defined by hinge means, or with a sliding opening, that is, movable by means of a lateral sliding movement on appropriate guides arranged on a threshold plane and/or on the upper cross member of the door frame.

If necessary, wings with abutment opening can also be provided with a "vasistas-type" opening, that is, one obtained with a controlled rotation around a horizontal hinge axis.

The wing closed position is maintained stably by temporary locking means that are deactivated by the user by means of the control member to obtain the opening of the wing.

The main technical problem found in the use of such weathertight door or window is essentially due to the fact that, in the initial phase of opening the wing, users find some difficulty in separating the wing from the sealing strips which, in the closed condition, guarantee its air-tightness.

In fact, the contact between the wing and the sealing strips generates essentially a clinging action engendered by variations in pressure or temperature or by tolerances, creating a situation known as "vacuum effect".

On top of this, there is also the inertia of the wing itself, whose weight can make its movement particularly arduous, especially for persons with limited physical ability.

This problem can also be aggravated in the case in which the weathertight door or window includes a sliding wing since, during the wing opening and closing operations, the sliding that occurs between the latter and the sealing strips generates a friction that engenders a high resistance to the movement, making its operation rather difficult. Moreover, this interference can eventually harm the sealing strips and cause a decline in the sealing performance of the wing.

Lastly, a weathertight door is known according to Patent <CIT>, comprising a fixed frame and at least a wing associated to sliding and tilting means comprising at least a pair of trolleys equipped with wheels running on a guiding rail placed at the upper cross member of the fixed frame and pivoting on it to move said wing between a closed position, in which it lies on a first plane abutting against first sealing strips arranged on the fixed frame of the wing, in which it lies on a second plane, parallel to said first plane, and is separated from said first sealing strips.

Moreover, second sealing strips are associated to the lower edge of the wing and are adapted to be pressed by the weight of the wing itself on the threshold plane of the opening when said wing is in the closed position.

Said door includes a mechanism for moving the wing, operated by means of the wing control handle and comprises lifting means for lifting said wing in the passage between said closed position and said open position, disconnecting the second sealing strips from the threshold plane.

These lifting means comprise an actuating pin axially movable between an idle position, in which it is substantially retracted in a housing seat provided on the wing when said wing is in the closed position, and a thrust position in which it is extracted from the housing and bears against abutment means associated with the fixed frame of the door to force the wheels of the trolleys out of recessed seats provided on the guide and thus obtain the lifting of the wing from the threshold plane.

In practice, the coordinated action of said sliding and tilting means and of said lifting means provided on said door wing, caused by the user when opening the door using the control member, makes it possible to lift the wing, detaching the second sealing strips from the threshold plane, and at the same time to move it to a plane parallel to the plane occupied in the closed position, moving it also away from the first sealing strips provided on the frame, thereby overcoming the problems found when opening it, such as the friction generated by the sealing strips and the "vacuum effect".

Although such lifting means perform satisfactorily, they have significant size: in fact, to allow the lifting movement of the door wing, the actuating pin moves axially along an inclined axis, and therefore the housing seat provided on the framework of the wing must be of sufficient dimensions to contain it when it is in the retracted position, and consequently requires the framework to have a considerable thickness, at the expense therefore of the extension of the glazed surface of the wing.

Document <CIT> discloses a hardware for operating a gliding door or window comprising an urging mechanism for urging the gliding door towards an open position. Such mechanism comprises a driving gear mounted in a push pin case fitted in the door and driven by the operation of the opening handle that causes a push pin to extend towards the door jamb thereby urging the door to open.

Document <CIT> shows a door push member comprising an actuator bar operated by a cam assembly driven by the opening of latch of the door so as to urge the door open by pushing at a lower end thereof.

Document <CIT> discloses a device that supports the opening action of a door body, said device comprising a kicking member linked to the opening handle of the door, said kicking member being projectable and retractable from the door body to kick the door open. The kicking member include a pair of arms rotatably linked with each other at respective end portions thereof, and a roller provided in the linking portion of the arms; when the kicking member is operated, the arms are folded with the linking portion serving as a fulcrum so that the roller protrudes from the door body.

Document <CIT> relates to a door or window provided with a bolt actuated by the handle of the door, which interacts with a shaped cavity arranged in a post of the perimetric door framework thus imparting a force that move the leaf of the door away from said post.

The main objective of the subject matter of the present invention is to overcome the problems of the prior art by devising thrust means for an abutting or sliding weathertight wing, in particular but not exclusively of a door or a window, capable of facilitating the user when opening the wing, making it possible to easily overcome the inertia of the wing and break the suction.

In the scope of the above objective, one purpose of the present invention is to realize a weathertight door or window provided with practical and functional thrust means that help the user in the wing opening operations, making them absolutely easy and manageable without any effort, even when the wing is particularly large and heavy.

The above objective, purpose and advantages, as well as others that will become more evident in the description which follows, are achieved with a weathertight door or window provided with thrust means as defined in claim <NUM>.

The successive claims define additional characteristics of the weathertight window and door according to the present invention, which will be better illustrated in the description of a particular but not exclusive embodiment illustrated by way of example without limitations in the enclosed drawings, wherein:.

With reference to <FIG> is illustrated a weathertight door or window <NUM> according to a first embodiment of the invention, in particular a window provided with a wing having "abutting" opening, integrating thrust means <NUM> according to the present invention.

Said window <NUM> comprises essentially a fixed frame <NUM> associable to an aperture A made on a wall of a building and essentially formed by a plurality of rigid elements interlinked to form at least an upper cross member 2A, and a first and a second member 2B, 2C, arranged substantially vertical and parallel to a lower cross member 2D.

Said window <NUM> also includes at least one wing <NUM>, movable between a closed position, in which it closes completely the opening A on the wall, and an open position in which at least one portion of said opening A remains free.

Said wing <NUM> preferably comprises at least one flat plate 3A, advantageously made of transparent material, such as glass, and provided with an interfacing framework <NUM> on which is mounted a control member, such as a rotating handle, thanks to which the user can obtain the opening or closing of the wing <NUM>.

Specifically, the wing <NUM> shown in <FIG> is of the "side hung" or "abutting" type, that is, it is rotatably connected to one of said pair of vertical members of said fixed frame <NUM>, for example, said second vertical member 2C, around an essentially vertical hinge axis X-X, defined by appropriate and known hinge members, and the passage between the closed position (<FIG>) and the open position (<FIG>) is performed by a rotation around said hinge axis X-X.

Said weathertight window <NUM> also comprises sealing means <NUM> arranged and configured so that, when said wing <NUM> is in a closed position, said opening A is closed to weather agents, i.e., water and air, in an essentially hermetic manner, also preferably providing a certain level of acoustic insulation.

In particular, preferably, said sealing means <NUM> include sealing strips, for example made conventionally of polymeric material or rubber, or of magnetic type, associated to at least one portion of the fixed frame <NUM> and/or to the wing <NUM> and arranged so as to be activated when the wing <NUM> is in the closed position.

Advantageously, the weathertight closed position is maintained thanks to temporary locking means <NUM> that substantially include an operating rod (not shown in the figures) extending vertically, inserted in the framework <NUM> of the wing <NUM> and axially movable through the rotation of said handle <NUM>, and provided with a plurality of locking hooks adapted to removably cooperate with corresponding holding elements provided at least on the fixed frame <NUM> to hold said wing <NUM> in the closed position, so that said wing presses the sealing strips <NUM> and activates them.

To obtain the opening of the wing <NUM> it is thus necessary to break the suction generated by the action of the sealing strips and to overcome the inertia of the wing itself; for this purpose, advantageously, said weathertight window <NUM> includes thrust means <NUM> mounted on said wing <NUM> and actuated by means of said handle <NUM> to move, comprising a thrust member <NUM> movable between a first position, occupied when said wing <NUM> is in the closed position, and a second position, or thrust position, in which it cooperates with abutment means <NUM> provided on said fixed frame <NUM> to give the wing <NUM> an opening push S adapted to space it, that is move it away from said fixed frame <NUM> and deactivate the sealing means <NUM>, helping the user in the initial step of opening the wing.

In particular, as shown in <FIG>, said thrust members <NUM> include essentially first driving means <NUM>, operatively associated with said handle <NUM> and adapted to drivingly slide a first sliding element <NUM>, such as a slide, along a first sliding direction V1, advantageously vertical, to move integrally said thrust member <NUM>, preferably formed by a rigid pin, along a second sliding direction V2 inclined with respect to the first sliding direction V1.

Preferably, said thrust means <NUM> are contained inside a housing <NUM> obtained in the interface framework <NUM> of said wing <NUM>, so that, in the first position, the thrust pin <NUM> is essentially retracted inside the housing <NUM>, and in the second position, or thrust position, it projects from said housing <NUM>, bearing upon said abutment means <NUM>.

The fact that said first slide <NUM> moves along a vertical direction V1 to urge the movement of the thrust pin <NUM> along an inclined sliding direction V2 is advantageous because it makes it possible to reduce the width of the housing <NUM> and thus of the interface framework <NUM> of the wing <NUM>, minimizing its encumbrance in favour of the extension of the transparent surface of the plate 3A of the wing <NUM>.

Advantageously, as shown in <FIG>, said abutment means <NUM> include an abutment surface 24A positioned on the fixed frame <NUM> of the window <NUM> and properly arranged to provide, cooperating with the thrust member <NUM>, an opening thrust S on the wing itself <NUM>; in particular, in the case of a door or window <NUM> with a swing opening, said thrust means <NUM> and said abutment means <NUM> are arranged and configured so as to apply on the wing <NUM> a thrust S having a prevalent component along a direction of translation T1 essentially horizontal and transversal with respect to the plane of the wing <NUM> in the closed position, so as to facilitate the opening rotation of the wing around said hinge axis X-X.

Referring again to <FIG>, said first driving means <NUM> are preferably formed from a gear wheel, rotatable integrally with the handle <NUM> thanks for example to a coupling with a polygonal pin 99B inscribed in it, provided with a first toothing <NUM> comprising at least one tooth 81A adapted to cooperate with a corresponding linear engaging tooth <NUM> obtained on said first sliding element <NUM> to activate its movement.

Advantageously, said first linear toothing <NUM> comprises at least one groove 82A defined between a first and a second abutting tooth 82B, 82C, said groove 82A having a width larger than the width of the engaging tooth 81A.

According to a second advantageous characteristic of the present invention, the sliding movement of the first slide <NUM> is transmitted to the thrust pin <NUM> thanks to transmission means <NUM> advantageously formed by a flexible but substantially axially rigid body, that is preferably essentially inextensible and incompressible, therefore adapted to transmit traction and thrust stresses, connected with a first end 85A to the first slide <NUM> and with the opposite end 85B to the thrust pin <NUM>.

In particular, advantageously, said transmission means <NUM> are adapted to slide inside a shaped guide <NUM> arranged in the housing <NUM> and configured to deviate the sliding direction V2 of said thrust pin <NUM> with respect to the sliding direction V1 of the first slide <NUM>.

Said transmission means <NUM> can for example include a chain formed from a plurality of modular elements articulated to each other, as shown in <FIG>; alternatively, said transmission means <NUM> can be formed of a flexible shaft or cable of "push-pull type" made of polymeric or metallic material, or of any other means or device capable of performing the same function.

In practice, the rotation of said first gear wheel <NUM>, in which the engaging tooth 81A meshes with the corresponding first linear toothing <NUM> provided on said first slide <NUM>, determines the movement of the first slide <NUM> along the vertical sliding direction V1, which in turn moves integrally, thanks to the transmission means <NUM>, the thrust pin <NUM> along the inclined sliding direction V2, from the retracted position to the extracted thrust position.

The first slide <NUM> is also advantageously associated with a first elastic biasing means <NUM>, such as for example a first compression spring, adapted to return the thrust pin <NUM> to the retracted position after having performed the thrust function, and with a second elastic biasing means <NUM>, such as for example a second compression spring, adapted to allow the reloading of said thrust means <NUM>.

Advantageously, said handle <NUM> is also adapted to move the temporary locking means <NUM>, not shown in the figures relative to the first embodiment of the invention, comprising second drive means, such as a second gear wheel, arranged coaxially with respect to said first gear wheel <NUM>, which is also driven in rotation by the movement of the handle <NUM>.

Said second gear wheel is provided with a third circumferential toothing adapted to engage with a fourth toothing formed on a second sliding member, such as a second slide, connected operatively to at least one temporary locking rod provided with at least one locking hook, and preferably at least one pair, adapted to removably cooperate with corresponding holding elements provided at least one jamb 2B of the fixed frame <NUM> to hold said wing <NUM> in the closed position, so that the same presses against the sealing strips <NUM> and activates them.

Preferably, said second drive wheel and said second slide are also arranged inside the same housing <NUM> in which are inserted said thrust means <NUM>, for example in a space properly separated by a plate that divides it longitudinally.

The operation of said thrust means <NUM> when they are applied to a wing <NUM> of a weathertight window <NUM> with abutting opening is the following: when the wing <NUM> is in the closed position (<FIG>), the handle <NUM> is in a first position, in which it is preferably arranged vertically, with the free operating end 99A for example turned downward, and said thrust means <NUM> are in an initial condition, with the thrust pin <NUM> in the first position, that is substantially retracted inside said housing <NUM> (<FIG> and <FIG>); the locking hooks of the temporary locking means <NUM> are engaged with the corresponding holding members and maintain the wing <NUM> firmly abutting against said sealing strips <NUM>, enhancing their sealing effect.

Moreover, in the initial condition, the engaging tooth 81A is received in the groove 82A of the first linear toothing <NUM> and arranged to rest against said first abutment tooth 82B, maintaining the first slide <NUM> in a position in which it presses said second elastic biasing means <NUM> (<FIG>).

To obtain the opening of the wing <NUM>, the user turns the handle <NUM>, gripping advantageously one end portion 99A; this movement involves the coordinated activation of said thrust means <NUM> of the wing and of the temporary locking means of the wing.

In fact, as shown in <FIG>, applying to the handle <NUM> a rotation of a first angle α, of for example <NUM>° with respect to the initial position, the latter brings into rotation in a concordant direction said first driving wheel <NUM> and consequently said engaging tooth 81A and said second driving wheel of the temporary locking means; thanks to the increased width of said groove 82A, such rotation is not initially useful to the actuation of the thrust pin <NUM>, but the contextual rotation of the second driving wheel makes it possible to impose a vertical translation to the second slide and therefore to the rod of the temporary locking means <NUM> and, consequently, of the locking hooks integral to the same, setting off the uncoupling of the latter from the corresponding holding elements.

With a further rotation of the handle <NUM>, for example by an angle α of about <NUM>° with respect to the initial position (<FIG>), said engaging tooth 81A reaches said second abutment tooth 82C and, from that moment, it meshes with the first linear toothing <NUM>; therefore, further opening rotations of the handle <NUM> impose a sliding movement to the first slide <NUM> along a vertical sliding direction V1, and therefore, through said transmission means <NUM>, the movement of said thrust pin <NUM> toward the extracted thrust position, countering the action of said first elastic biasing means <NUM>.

As the thrust pin <NUM> comes out of the housing <NUM> (<FIG>), its head end 84A bears against the surface 24A of the abutment element <NUM> provided on the fixed frame <NUM> (<FIG>), providing a thrust S on the wing <NUM> in the direction of translation T1 that makes it possible to move the wing itself away from the fixed frame <NUM>, in the opening direction, deactivating the sealing strips <NUM> and thus allowing the user to start and complete without effort the opening movement of the wing <NUM> itself.

For this purpose, as is shown in <FIG>, said thrust pin <NUM> is advantageously arranged so that the passage between the first position and the second position comes about in a direction parallel to the plane of the wing <NUM>, and is configured in such a way that its head surface 84A and the abutment surface 24A of said abutment means <NUM> are essentially counter inclined.

Alternatively, as shown in <FIG>, said thrust pin <NUM> can be arranged so that the passage between the first position and the second position comes about in a direction essentially orthogonal to the plane of the wing <NUM>, bearing against an abutment surface 24A parallel to the plane of the wing <NUM>.

When the handle <NUM> has completed a rotation angle α of about <NUM>° with respect to the initial position (<FIG>), the engaging tooth 81A reaches rotationally said second abutment tooth 82C of the first linear toothing <NUM>, which substantially corresponds to the operating condition of maximum thrust, with the thrust pin <NUM> in the second position.

As soon as the engaging tooth 81A passes rotationally the second abutment tooth 82C, the first elastic biasing means <NUM> returns the first slide <NUM> to the initial position, bringing the thrust pin <NUM> to the first position (<FIG>), retracted inside the housing <NUM>, and the handle <NUM> is free to complete its own rotation until it reaches the final opening position, in which it is preferably arranged horizontally.

The moment in which the user desires to close again the weathertight wing <NUM> he brings it to the closed position, and starts the rotation of the handle <NUM> in the direction of rotation opposite to the opening direction, so as to return the end 99A downward.

When the handle <NUM> reaches a rotation angle α of about <NUM>° with respect to the closed position, the radial engaging tooth 81A of the of the toothed wheel <NUM> integral to it passes the second abutment tooth 82C of the first linear toothing <NUM> obtained on the slide <NUM> and inserts itself into the groove 82A (<FIG>); at this point the rotation of the handle <NUM> corresponds to the movement of the tooth in the groove 82A (<FIG>) which enables the activation of the temporary locking means <NUM>, or the vertical translation in reverse of the second slide integral to the rod, and, consequently, the engagement of the locking hooks integral to it with the corresponding holding elements arranged on the framework <NUM>.

The further rotation of the handle <NUM>, until the initial closing position is reached, causes the engaging tooth 81A to collide with the first tooth 82B of the first linear toothing <NUM>, causing a sliding of the first slide <NUM> upward, in opposition to the action of the second elastic biasing means <NUM>, making it possible to return the thrust means <NUM> to the initial non-operative condition and to reload the thrust rod <NUM> (<FIG>).

<FIG> illustrate a weatherproof door <NUM> according to a second embodiment of the present invention, specifically a door with sliding opening wing, integrating thrust means <NUM> according to the present invention, respectively in a closed position and in an open position.

As shown in the figures, when opened, the wing <NUM> is superimposed on a fixed wing; alternatively, the wing <NUM> can be of hide-away type, that is, in enters into a cavity in the wall.

As with the previous embodiment, said door <NUM> includes a fixed frame <NUM>, formed essentially by an upper cross member 2A, a pair of parallel vertical members 2B, 2C, and at least one wing <NUM> provided with an interface frame <NUM>, and slidingly movable between a closed position and an open position thanks to sliding means (not shown) comprising a pair of trolleys associated with the lower edge of the wing and resting in a tilting or non-tilting manner on a horizontal track arranged at the threshold plane P, that allow the sliding of the wing between a closed position and an operating and open position.

Inversely, if said weatherproof door <NUM> is made as provided for in the patent <CIT>, said wing <NUM> is supported and movable with sliding and tilting means formed by a pair of trolleys, running on a guide rail arranged at the upper cross member 2A and tilting on it, without guides or tracks on the ground, since the wing <NUM> can rest directly on the threshold plane P in the closed position.

In any case, sealing means <NUM>, like appropriate sealing strips, are associated with at least one portion of the fixed frame <NUM> and/or the wing <NUM> and can be activated when the wing is in the closed position so as to hermetically close the opening A with which the weatherproof door <NUM> is associated.

According to an advantageous characteristic of the present invention, the weathertight door <NUM> also comprises thrust means <NUM>' according to the invention, mounted on said wing <NUM> and adapted to assist the user when opening the wing so as to break the suction generated by the sealing means <NUM> and the inertia of the same wing.

As with the preceding embodiment, said thrust means <NUM>' comprise first driving means <NUM>', such as a first gear wheel, operatively connected to the handle <NUM> and adapted to activate in sliding a first sliding element <NUM> along a first sliding direction V1 in vertical use (<FIG>).

Said first sliding element <NUM> is connected through flexible transmission means <NUM> to a thrust element <NUM>, such as a rigid pin, movable along a second sliding direction V2 inclined with respect to the first sliding direction V1 between a first position, in which it is substantially retracted in a housing <NUM> provided on said wing <NUM> when said wing <NUM> is in the closed position, and a second position, or thrust position, in which it is extracted with respect to the housing <NUM> and bears down on abutment means <NUM> associated with said fixed frame <NUM> to give to the wing <NUM> an opening thrust S useful to move the wing away from the frame <NUM>, deactivating the effect of the sealing means <NUM>.

In this embodiment, advantageously, said thrust means <NUM>' apply to the wing <NUM> a thrust S comprising, in addition to a component along a translation direction T1 essentially horizontal and transversal with respect to the lying plane of the wing <NUM> when in the closed position, a component along a vertical direction T2, to enable the wing <NUM> to rise with respect to the closed position and allow the movement of the wing through the sliding means. Therefore, in this case, said abutment means <NUM> are provided with an appropriately inclined abutment surface 24A.

According to an advantageous characteristic of the invention, as shown with greater detail in <FIG>, said weathertight window <NUM> also comprises safety locking means <NUM> and temporary locking means <NUM>, the latter actuated by the user by means of a control device <NUM> provided on the wing <NUM>, in a manner coordinated with the thrust means <NUM>, to selectively hold the wing in a closed position and actuate the sealing strips <NUM>.

Said safety locking means <NUM> preferably include a cylinder lock <NUM>, provided with actuating means operated by inserting a key inside a keyhole 61A provided in the same cylinder to transmit the rotational movement of the key to a lock member, so that the lock member can move conventionally between a retracted position and an extracted position.

Said temporary locking means <NUM> include second driving means <NUM>, such as a second gear wheel, arranged coaxially with respect to said first gear wheel <NUM>', which is also driven to rotate through the movement of the handle <NUM>.

Said second gear wheel <NUM> is provided with a second circumferential toothing <NUM> adapted to engage with a second linear toothing <NUM> formed on a second slidable element <NUM>, such as a slide, operatively connected to at least one temporary locking rod <NUM> provided with at least one locking hook <NUM>, and preferably at least a pair, as shown in <FIG>, adapted to removably cooperate with a corresponding retaining element <NUM> provided on at least one vertical member 2B of the fixed frame <NUM> to retain said wing <NUM> in the closed position, in a way that enables it to compress the sealing elements <NUM>, activating them.

Preferably, as shown in <FIG>, a dividing plate <NUM> divides said housing <NUM> longitudinally in two compartments, in which in the first compartment are housed said thrust means <NUM>' and in the second are housed said temporary locking means <NUM>.

The first gear wheel <NUM>' includes a first circumferential toothing <NUM>, adapted to engage with a first linear toothing <NUM>. ' provided on the first slide <NUM>. Unlike the first embodiment of the present invention, said first circumferential toothing <NUM> has a plurality of teeth, among which there is at least a first engaging tooth 81A having a larger radial extension with respect to the other teeth, and one last engaging tooth 81B.

Advantageously, said first linear toothing <NUM>' includes a plurality of grooves, among which there is at least one first groove 82A defined between a first and a second abutment tooth 82B, 82C, said groove 82A having an increased width with respect to the width of one of the teeth of said first circumferential toothing <NUM>, and a last groove 82D.

The operation of said thrust means <NUM>' when they are applied to a wing <NUM> of a weathertight window <NUM> with sliding opening is the following: when the wing <NUM> is in said closed position (<FIG> and <FIG>), the handle <NUM> is in a first position, in which it is preferably arranged vertically, for example with the free operating end 99A preferably facing upward, and said thrust means <NUM>' are in the initial non-operative condition, with the thrust pin <NUM> in the first position, substantially retracted inside said housing <NUM> (<FIG>); the locking hooks <NUM> of the temporary locking means <NUM> are engaged with the corresponding retaining elements <NUM> and maintain the wing <NUM> firmly abutting against said sealing strips <NUM>, actuating their sealing effect.

The safety locking means <NUM> are in the locking configuration, in which the lock member <NUM> is in an extracted position, inserted inside engaging means of the lock member <NUM> provided on the fixed frame <NUM> of the weathertight window <NUM>'.

Moreover, in the initial condition, the thrust means <NUM>' are arranged so that the first engaging tooth 81A is received in the groove 82A of the first liner toothing <NUM>' and arranged in support against said first abutment tooth 82B, maintaining the first slide <NUM> in a position in which it exerts a compression on said second spring <NUM>.

To obtain the opening of the wing <NUM>, the user moves conventionally the key inside the keyhole of the cylinder <NUM>, returning back the lock member <NUM> to the retracted position with respect to the engagement seat <NUM>, thus deactivating the safety locking means <NUM> (<FIG>).

Gripping the operating end 99A of the handle <NUM>, the user sets it into rotation to obtain the opening of the wing <NUM>; this movement involves the coordinated activation of said wing thrust means <NUM>' and of said temporary locking means <NUM> (<FIG>).

In fact, if a rotation of a first angle α with respect to the initial position is applied to the handle <NUM>, the handle also sets said first driving wheel <NUM>' and said second driving wheel <NUM> into rotation in a concordant direction; thanks to the increased width of said groove 82A, the rotation of said first driving wheel <NUM>' is not initially useful for the movement of said thrust pin <NUM> but at the same time the second circumferential toothing <NUM> of said second driving wheel <NUM> meshes with the second linear toothing <NUM> of the second slide <NUM>, making it possible to impose a translation in a direction V1 in vertical use to the locking rod <NUM> and, consequently, to said locking hooks <NUM> integral to the same, starting the detachment of the latter from the corresponding retaining elements <NUM>.

With a further rotation of the handle <NUM> with respect to the initial position, said first engaging tooth 81A reaches said second abutment tooth 82C and, from that moment, further opening rotations of the handle <NUM> impose a sliding to the first slide <NUM> along a vertical sliding direction V1 and thus, through said transmission means <NUM>, the movement of said thrust pin <NUM> along a direction V2 toward the extracted position, in contrast with the action of said first spring <NUM>.

As the thrust pin <NUM> comes out of the housing <NUM>, its head end 84A impinge on the surface 24A of an abutment element <NUM> provided on the fixed frame <NUM>, providing an opening thrust S to the wing <NUM> that makes it possible to move the wing away from the frame <NUM>, deactivating the sealing strips <NUM> and thus allowing the user to easily complete the opening movement of the wing <NUM>.

Advantageously, said thrust pin <NUM> is arranged so that the passage between the first position and the second extracted position takes place along a direction parallel to the lying plane of the wing <NUM>, and is configured so that its head surface 84A and the abutment surface 24A of said abutment surface <NUM> are essentially counter-inclined, so that the thrust S applied also has, in addition to a translation component along a translation direction T1 useful to break the suction of the sealing means <NUM>, a component along a vertical direction T2, such as to allow the lifting of the wing <NUM> and thus the operation of the sliding means that allow its movement.

When the handle <NUM> has completed a rotation of an angle α of about <NUM>° with respect to the initial position, the last tooth 81B of the first circumferential toothing <NUM> of the thrust means <NUM>' is rotatably received in the last groove 82D of the first linear toothing <NUM>, which substantially corresponds to the operative condition of maximum thrust, with the thrust pin <NUM> in the extracted position (<FIG>).

As soon as the last engaging tooth 81B rotatably leaves the last groove 82D of the first linear tooting <NUM> after the further rotation of the handle <NUM>, the first circumferential toothing <NUM> and the first linear toothing <NUM> become uncoupled and the first elastic biasing means <NUM> returns the first slide <NUM> to the initial position, thus returning back the thrust pin <NUM> to the retracted position (<FIG>).

The handle <NUM> then freely continues its rotation until it reaches the final open position, where it is preferably arranged vertically, with the free end 99A facing downward (<FIG> and <FIG>).

When the user wishes to close the wing <NUM>, he rotatably moves it back to the closed position, and starts the rotation of the handle <NUM> in the direction of rotation opposite to the opening direction, so as to return the end 99A upward.

During the rotation of the handle <NUM>, the second operating wheel <NUM> imposes the sliding of the second slide <NUM> in the direction opposite to the opening direction (<FIG>), retrieving back the locking rod <NUM> so that the locking hooks <NUM> integral to it engage the corresponding retaining elements <NUM> provided on the frame <NUM>.

At the same time, the rotation of the first driving wheel <NUM>' enables the first circumferential toothing <NUM> to engage with the first linear toothing <NUM> provided on the first slide <NUM>, causing it to slide along a direction V1 but in the opposite sense, that is, upward, in contrast with the action of the second spring <NUM>.

When the first engaging tooth 81A rotatably overcomes the second abutment tooth 82C of the first linear toothing <NUM>, the second spring <NUM> pushes the slide <NUM> to the starting position, returning the thrust means <NUM>' to the starting non-operative condition and consequently reloading the thrust pin <NUM> (<FIG>).

At this point, the closing procedure can be completed by activating the safety locking means <NUM> to move the lock member <NUM> of the safety lock in the extracted position, so that the lock member is received in the engaging seat <NUM> provided in the frame <NUM> (<FIG>).

Advantageously, on the wing <NUM> can also be provided a force storage device <NUM>, adapted to store energy resulting from the inertia of the wing during the closing movement, and to provide a thrust in the wing sliding direction T3, contributing in this manner to reducing the force required for the user to open the wing.

As shown in <FIG>, said force storage device <NUM> preferably comprises a mounting plate <NUM>, adapted to be connected to the lateral head edge of the wing, on which is mounted an internally threaded bush <NUM> adapted to be received in the thickness of the same wing.

Inside the bush <NUM> is advantageously threaded in an adjustable way a sleeve <NUM> wherein are coaxially inserted a first elastic element <NUM>, such as a helical spring advantageously operated by compression, a second elastic element <NUM>, such as a helical spring advantageously operating by traction, and finally a pin <NUM>, provided with a hollow cylindrical body 36A and a flat head 36B, adapted to bear against an abutment element <NUM> provided on a vertical member 2B of the frame <NUM> of the watertight window or door <NUM>.

Said second spring <NUM> is received within the hollow body 36A of said pin <NUM> and is connected, with a first end 35A to the bottom of said bush <NUM>, and with the opposite end 36B to the pin <NUM>, near the flattened head 36B of said pin.

The first spring <NUM> is instead arranged externally to the body 36A of the pin <NUM> in such a way as to impinge in abutment with the first end 34A, against the bottom of the bush <NUM>, and with the opposite end 36B to be pressed by the head of the pin <NUM>.

The second spring <NUM> pulls constantly the pin <NUM> in the retracted position, while the first spring <NUM> is adapted to store elastic energy during the closure, to then release it during the opening of the wing <NUM>.

When appropriately selecting the springs <NUM>, <NUM> and the axial position of the sleeve <NUM> it is advantageously possible to adjust the force developed by the device <NUM>, making it also possible to easily adapt it for use on wings of different weights and dimensions.

Finally, in <FIG> is shown a weathertight door or window <NUM> according to a not claimed embodiment of the invention, equipped with a wing <NUM> with slidable opening provided with sliding and tilting means <NUM> comprising slidable trolleys <NUM> pivoting on upper rails <NUM> and lower accompanying means comprising advantageously a roller <NUM> running on a guide member <NUM> and accompanying cams to guide the opening movement of the wing (<FIG>, <FIG>, <FIG> and <FIG>).

The figures indicate, with the letter E, the external side and with the letter I the internal side.

Said weathertight window or door <NUM> includes thrust means <NUM>" (not shown in the figures) mounted on said wing <NUM>, operatively connected to said control member <NUM> and adapted to drivingly slide a first sliding element <NUM> along a first sliding direction V1 in vertical use, to integrally move a thrust member <NUM>' between a first position, occupied when said wing <NUM> is in the closed position, and a second position, in which it interacts with abutment means <NUM>' connected to said fixed frame to give the wing <NUM> an opening thrust S useful to move it away, that is to separate it, from said frame <NUM>.

Said thrust means <NUM>" include first driving means <NUM>' formed essentially by a wheel driven in rotation by said control member <NUM> and provided with a first circumferential toothing <NUM> comprising at least a first engaging tooth 81A adapted to cooperate with a corresponding first linear toothing <NUM>' formed on said slidable element <NUM>.

However, in this embodiment the thrust element <NUM>' is formed by an inclined hook (<FIG>), movable integrally with said first slide <NUM> along a vertical direction V1 and adapted to cooperate with abutment means <NUM>' to provide an opening thrust S to the wing <NUM> comprising a component along the sliding direction of movement T3 of the wing, and a component along a translation direction T1 essentially horizontal and transversal with respect to the lying plane of the wing <NUM> in the closed position.

For this purpose, said abutment means <NUM>' comprise advantageously an engagement pocket <NUM> equipped with a frontal guiding slot 25A provided with lateral edges inclined outwardly E to accompany the movement of the wing in the translation direction T1 and with a bottom wall 25B inclined to accompany the movement in the wing <NUM> in the sliding direction T3 of the wing (<FIG>).

When the wing <NUM> of the weathertight window or door <NUM> is in the closed position, said thrust member <NUM>' is inserted inside the engagement pocket <NUM> (<FIG>). To move the wing <NUM> to the open position, the user rotates the handle <NUM>, which activates said thrust means <NUM>", causing said first slide <NUM> to move along said direction V1.

The thrust hook <NUM>', mounted integrally to said first slide <NUM>, is thus moved along the same sliding direction V1, leaving progressively the engagement pocket <NUM> with a movement advantageously guided by the inclined lateral edges of the guiding slot 25A and also cooperating at the same time with the bottom wall 25B (<FIG>) of the pocket <NUM> so as to apply a thrust S to the wing <NUM> in the transversal translation direction T1, and also in the direction of sliding movement of the wing T3, thus allowing the user to start without effort the opening movement of the wing <NUM> away from the frame <NUM>, overcoming the inertia of the wing <NUM> and breaking the suction created by the action of the sealing means <NUM>.

Unlike the previous embodiments, said thrust means <NUM>" are not provided with elastic means nor transmission means.

From the foregoing description, it is thus evident how the present invention achieves the previously foreseen purposes and advantages: in fact, thrust means have been devised for a weathertight wing, adapted to be incorporated in a door or window, that facilitate the user in the action of opening the wing, making it possible to overcome the moment of inertia of the wing and the so-called "vacuum effect".

Advantageously, the thrust means according to the present invention are practical and functional, helping the user in the operation of opening the wing to make it absolutely easy and effortless, even if the wing is of appreciable size and weight.

Moreover, the thrust means according to the present invention are rather compact, with limited dimensions, and thus can be incorporated in the frameworks of wings having reduced thicknesses, to the advantage of the glazed surfaces and consequently of the appearance, light transmittance and economy in the quantity of material used in making the wing.

It is specified that in the foregoing description, the positional or directional terms such as "above, below, vertical, horizontal, lower and upper", as well as any other similar term should be interpreted with reference to a weathertight door or window, and to thrust means incorporated therein, in their normal operative condition, as shown in the enclosed figures.

Clearly, characteristics shown with reference to an inventive embodiment can also be included in other compatible embodiments, even if not illustrated in the figures or explicitly described herein.

Naturally, the present invention is susceptible to numerous applications, modifications or variants without thereby departing from the scope of patent protection, as defined by the accompanying claims.

Claim 1:
Weathertight window or door (<NUM>, <NUM>) comprising a fixed frame (<NUM>) which can be associated with a through opening (A) obtained in a wall, at least a wing (<NUM>) movable between a closed position and an open position for selectively closing said opening (A), and sealing means (<NUM>) associated with at least a portion of said fixed frame (<NUM>) and/or of said wing (<NUM>) and arranged such that, when said wing (<NUM>) is in said closed position, said through opening (A) is essentially sealed, a control member (<NUM>) being provided integral with said wing (<NUM>) to drive the opening/closing of the wing (<NUM>) and to selectively operate temporary locking means (<NUM>) for holding said wing (<NUM>) in said closed position,
said window or door (<NUM>, <NUM>) also comprising thrust means (<NUM>, <NUM>') mounted on said wing (<NUM>) and operatively connected to said control member (<NUM>), said thrust means (<NUM>, <NUM>') comprising a first sliding element (<NUM>) movable along a first sliding direction (V1), vertical in use, for integrally displacing a thrust member (<NUM>) between a first position, when said wing (<NUM>) is in the closed position, and a second position, wherein cooperates with abutment means (<NUM>) disposed on said fixed frame (<NUM>) to provide the wing (<NUM>) with an opening thrust (S) for spacing said wing (<NUM>) from said fixed frame (<NUM>), wherein said thrust member (<NUM>) of said thrust means (<NUM>, <NUM>') is formed of a rigid pin operatively connected to said first sliding element (<NUM>) by means of transmission means (<NUM>) to be movable along a second sliding direction (V2) inclined with respect to said first sliding direction (V1) between said first position, wherein said thrust pin (<NUM>) is essentially retracted in a housing (<NUM>) provided on said wing (<NUM>), and said second position, wherein said thrust pin (<NUM>) extracted from said housing (<NUM>) and abuts against said abutment means (<NUM>),
characterized in that said transmission means (<NUM>) comprise a flexible but substantially axially rigid body, associated with a first end portion (85A) to said sliding element (<NUM>) and with an opposite end portion (85B) to said thrust pin (<NUM>), said transmission means (<NUM>) being adapted to slide in a shaped guide (<NUM>) arranged in said housing (<NUM>) and configured to deviate the sliding direction (V2) of said thrust pin (<NUM>) with respect to the sliding direction (V1) of said sliding element (<NUM>).