Depthometer for underwater immersion

Depthometer for underwater immersion of the type comprising an outer waterproof casing, at least a portion of which consists of transparent material;

• a graduated dial visible from the outside through the transparent portion of the casing;
• an element deformable in accordance with the external pressure;
• and a mechanical transducer, the inlet of which is connected to the deformable element, and the outlet of which is connected to an indicator element to move the latter along the dial in accordance with the deformation of the deformable element;
• the depthometer being characterized in that said deformable element consists of an elastic end wall of a metal cup member comprising a lateral wall extending from the periphery of the end wall and integral with it, the cup member forming part of the outer casing;
• stiffening means cooperating with said lateral wall to make this latter indeformable with the end wall, said cup member being formed of drawn sheet metal, and said end wall is constrained and configured in such a manner as to deform axially as a function of the external pressure in accordance with a law greater than cubic.

Depthometer for underwater immersion of the type comprising an outer waterproof casing, at least a portion of which consists of transparent material;

• a graduated dial visible from the outside through the transparent portion of the casing;
• an element deformable in accordance with the external pressure;
• and a mechanical transducer, the inlet of which is connected to the deformable element, and the outlet of which is connected to an indicator element to move the latter along the dial in accordance with the deformation of the deformable element;
• the depthometer being characterized in that said deformable element consists of an elastic end wall of a metal cup member comprising a lateral wall extending from the periphery of the end wall and integral with it, the cup member forming part of the outer casing;
• stiffening means cooperating with said lateral wall to make this latter indeformable with the end wall, said cup member being formed of drawn sheet metal, and said end wall is configured in such a manner as to deform axially as a function of the external pressure in accordance with a substantially linear law.

Depthometer for underwater immersion of the type comprising an outer waterproof casing, at least a portion of which consists of transparent material;

• a graduated dial visible from the outside through the transparent portion of the casing;
• an element deformable in accordance with the external pressure;
• and a mechanical transducer, the inlet of which is connected to the deformable element, and the outlet of which is connected to an indicator element to move the latter along the dial in accordance with the deformation of the deformable element;
• the depthometer being characterized in that said deformable element consists of an elastic end wall of a metal cup member comprising a lateral wall extending from the periphery of the end wall and integral with it, the cup member forming part of the outer casing;
• stiffening means cooperating with said lateral wall to make this latter indeformable with the end wall, said stiffening means including a forcibly mounted rigid ring in contact with the outer surface of the lateral wall of the cup member, said stiffening means also including a rigid annular member, at least part of which is forcibly inserted in a sealed manner into the cup member;
• said annular member supporting the dial in a fixed position and cooperating under sealed conditions with said transparent wall of the casing to connect this latter to the cup member, said rigid ring being provided with an external radial flange engaged in an annular internal groove in an annular member of resilient material, this latter comprising fixing means connected thereto, to connect the depthometer to a support, and a rigid stop ring is mounted in contact with the outer surface of said annular member of resilient material, in an axial position between said flange and the free end of the lateral wall of the cup member.

Depthometer for underwater immersion of the type comprising an outer waterproof casing, at least a portion of which consists of transparent material;

• a graduated dial visible from the outside through the transparent portion of the casing;
• an element deformable in accordance with the external pressure;
• and a mechanical transducer, the inlet of which is connected to the deformable element, and the outlet of which is connected to an indicator element to move the latter along the dial in accordance with the deformation of the deformable element;
• the depthometer being characterized in that said deformable element consists of an elastic end wall of a metal cup member comprising a lateral wall extending from the periphery of the end wall and integral with it, the cup member forming part of the outer casing;
• stiffening means cooperating with said lateral wall to make this latter indeformable with the end wall, and said transparent wall of the casing comprises an internal cavity, in which is housed a compass.

Depthometer for underwater immersion of the type comprising an outer waterproof casing, at least a portion of which consists of transparent material;

• a graduated dial visible from the outside through the transparent portion of the casing;
• an element deformable in accordance with the external pressure;
• and a mechanical transducer, the inlet of which is connected to the deformable element, and the outlet of which is connected to an indicator element to move the latter along the dial in accordance with the deformation of the deformable element;
• the depthometer being characterized in that said deformable element consists of an elastic end wall of a metal cup member comprising a lateral wall extending from the periphery of the end wall and integral with it, the cup member forming part of the outer casing;
• stiffening means cooperating with said lateral wall to make this latter indeformable with the end wall, and said transparent wall of the casing comprises an internal cavity, in which is housed a thermometer.

A depthometer for underwater immersion comprising an outer waterproof casing, at least one portion of which consists of transparent material, and at least another portion of which is deformable in accordance with the external pressure;

• a graduated dial arranged within said casing and visible through said transparent portion;
• and a mechanical transducer, an inlet of which is connected to said deformble portion and an outlet of which is connected to an indicator element movable along said dial in accordance with the deformation of said deformable portion;
• said outer casing comprising an intermediate rigid annular member supporting said dial and said transducer, a first cup-shaped member comprising said transparent portion, said first cup-shaped member being fitted onto one end portion of said rigid annular member and engaging positively the latter in water-tight relation, a second cup-shaped member arranged opposite to said first cup-shaped member with respect to said rigid annular member, said second cup-shaped member being made of drawn sheet metal and comprising an end wall forming said deformable portion, and a lateral axially extending peripheral wall integral with said end wall and force-fitted onto a peripheral portion of said rigid annular member;
• said lateral wall cooperating in water-tight relation with an outer surface of said peripheral portion of the rigid annular member, and outer rigid stiffening means being provided to make said lateral wall indeformable with said end wall, and to clamp said lateral wall against said peripheral surface.