FR2627960A1 - Inflatable boot with pump in heel - with leg of boot having double wall and pump being operated by action of foot - Google Patents

Abstract

The boot has a non-slip sole (4), made of rubber or similar material. Its leg (1) has a double wall, made of rubber or similar airtight material, with a stopper (7) at the top. A pump (5) in its heel communicates with the leg, to inflate it. The pump is a cavity with a variable volume which has an input valve (6) at the top and an output valve (3) at the back. The output valve is at the bottom of the back of the leg. The pump is operated by the action of the foot in the boot. USE - The boot is inflatable and can be folded up and stored in a bag when not in use.

Description

 The present invention relates to a pair of inflatable boots.

Currently, a pair of boots cannot be worn over a pair of shoes and the device according to the present invention makes it possible to remedy this and provides the user with a comfortable and practical means of being able to move on slippery, snowy ground, muddy ... without taking off his shoes and putting on this new pair of boots.

 The present invention relates to a device and a technique making it possible to significantly reduce the volume of a pair of new boots so as to allow them to be put on over a pair of shoes with flat heels, allowing the inflation of this pair of boots and its use , and allowing them to be folded after use in a bag created for this purpose.

 According to the invention, these objectives are achieved by making the boot have a pump with a rubber valve or the like, situated in the inner heel of the boot, which will make it possible to inflate the boot once worn, and especially to put it on by above a pair of shoes.

 According to a preferred method of execution, the boot is made up of a rubber sole or similar material, non-slip, waterproof, and a flexible rising part.

This last part is made with a double wall of rubber or similar hermetic and from the edge and the perimeter of the sole.

The seams between the double wall allow the split air to form vertical (or) and horizontal "strands" at the ankle, according to a preferred embodiment.

Inside the sole, in the heel of the boot, there is a valve pump which according to a preferred embodiment allows the air filling of the rising part.

A thin air permeable inner sole covers the sole and the pump suction valve, this allows better comfort and also prevents the intrusion of external particles (pebble, earth ...) to the inside the pump.

At the top and back of the rising part is a blanking plug connected to the boot by a tab, allowing deflation of the boot.

The rubber or similar part in which the plug fits can be made, according to a preferred embodiment, so as to serve as a safety valve.

The cap is ejected if the pressure determined by the interior volume is accidentally exceeded; this is to avoid a risk, however slight, of compression against the user's leg.

This safety is not absolutely necessary in the execution of the boot because the balance of the pressure forces causes the inflation to stop automatically when the determined pressure is reached.

 The air layer between the inner wall and the outer wall is an element of comfort by its flexibility, its lightness and a thermal insulator.

 It is technically possible, according to the invention and according to the pressure of the air pumped between the double wall and the interior volume, to modify the size.

 After use, it is simple to leave the boot, just unscrew the shutter, the boot deflates and the user can remove it. The user can then reduce the volume of the pair of boots by folding the rising part on the sole and slip it into a bag adapted to the pair of boots and preferably executed.

The invention will be better understood using the description below:
In the attached drawing:
A flexible envelope 1 traps a volume of air 2 connected by a discharge valve 3 to a cavity 5 whose volume can vary.

 A suction valve 6 connects the cavity 5 to the atmospheric pressure.

A variable force created by the movements of the body produces an elastic deformation of the sole 4 and therefore a variation in the volume'5
This system acting as a pump will inflate the flexible envelope 1 to a determined pressure in order to make it semi rigid and create an air layer 2 acting as thermal insulation.

 A valve 7 allows deflating the envelope 1-in view of storage under a reduced and flexible volume of the system.

It goes without saying that various modifications could be made to the example described:
Preferably, the valve pump is inserted, fixed by gluing in a space provided for this purpose, inside the heel of the sole 4, but it can be molded in the sole, forming an integral part of it. this.

 Preferably, the mechanical pump consists of a variable-volume cavity 5, made of a solid rubber or similar wall 1 and of a suction valve 6, imperatively located at the top of the cavity and a discharge valve 3, imperatively located at the rear of the pump and in communication with the primary coil 2. The suction valve 6 is made of a material which is not injurious to the foot of the user.

But each of the valves can be executed by a piston, or a valve, or a ball ...

 Preferably, the rising part is made of a double wall of rubber or the like 1 with seams delimiting sausages, the primary sausage 2 being in direct communication at its base with the valve 3 located behind the pump, the other tubes being in communication with each other and with the primary tube.

But the sausages can be executed by stitching, or glued, or heat sealed ...

Claims (3)

 I Inflatable boot consisting of a sole 4 of rubber or a similar waterproof, non-slip material and a rising part; the latter being made with a double wall 1 made of hermetic rubber or the like and being provided at the top and rear with a plug 7, characterized in that it comprises a pump with two valves 3 and 6, integrated in the heel of the sole in communication with the rising part with double wall 1 being able to contain air, constituting during inflation by the action of the foot of the tubes in communication with each other including a primary provided at the top with an opening on the exterior and a shutter plug 7 and provided at the bottom with an opening putting this tube 2 in communication with the discharge valve therefore with the cavity 5, the shutter plug once put in place ensuring the maintenance of the boot with a constant air volume.  2 inflatable boot according to claim 1, characterized in that the pump with two valves consists of a variable volume cavity. 5 provided with a first inspiration valve 6 situated at the top of said cavity 5 and with a second delivery valve 3 placed at the rear of said cavity 5.  3 method of inflating the boot according to any one of claims 1 to 2, characterized in that the suction valve 6 is actuated downward by the heel of the foot of the user who crushes the pump, thus blocking the passage of air between the interior of the boot and the cavity 5, the flair contained in the cavity 5 being projected through the discharge valve 3 which opens by the force of projection, the air then conveying in the primary tube 2, the obturator plug 7 being put in place, the cavity 5 fills with air when the user lifts his heel, the discharge valve 3 then blocking the communication between the primary tube 2 and the cavity 5, by pressure difference, the suction valve 6 being projected upwards and leaving free communication between the interior of the boot and the cavity 5 which fills so that the quantity of air remains stable in the tubes as long as the user leaves the plug 7 in place.