FR2563012A1 - Speed indicator for ascent in sea water - Google Patents

Speed indicator for ascent in sea water Download PDF

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Publication number
FR2563012A1
FR2563012A1 FR8405865A FR8405865A FR2563012A1 FR 2563012 A1 FR2563012 A1 FR 2563012A1 FR 8405865 A FR8405865 A FR 8405865A FR 8405865 A FR8405865 A FR 8405865A FR 2563012 A1 FR2563012 A1 FR 2563012A1
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FR
France
Prior art keywords
ballast
ascent
cylinder
constituted
speed indicator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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FR8405865A
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French (fr)
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FR2563012B1 (en
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Individual
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Individual
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Priority to FR8405865A priority Critical patent/FR2563012B1/en
Publication of FR2563012A1 publication Critical patent/FR2563012A1/en
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Publication of FR2563012B1 publication Critical patent/FR2563012B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/32—Decompression arrangements; Exercise equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/62—Devices characterised by the determination or the variation of atmospheric pressure with height to measure the vertical components of speed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention relates to a device indicating to a sea diver a constant predetermined speed of ascent. It is constituted by a box 1 whose end is conical. Inside at the cone end there is a balancing ballast 3 and at the other end is a closure block 2. The device which is watertight and does not deform at the normal pressure of use has a bulk density less than that of water so that it ascends towards the surface at a given speed which is regulated by the balancing mass. The submerged diver has only to release the apparatus and follow it at a constant distance.

Description

La présente invention concerne un dispositif qui permet à un plongeur immerge avec scaphandre, de remonter à une vitesse déterminée et constante, ceci afin d'éviter des conséquences pathogènes. The present invention relates to a device which allows a submerged diver with a diving suit, to ascend at a determined and constant speed, this in order to avoid pathogenic consequences.

Les moyens traditionnels d'obtenir cette vitesse consistent pour le plongeur à regarder d'une part sa montre et d'autre part son profonds mètre. n existe aussi des ordinateurs de plongée sur lesquels un témoin optique signale une vitesse trop faible ou trop grande. Si l'un de ces moyens est peu pratique, l'autre est fort cher et tous deux présentent l'in convénient de demander une attention soutenue et d'accaparer la vision presque éxclusivement à cette tâchez
Le prisent dispositif selon l'invention est formé d'un cylindre (fig.I) d'environ douze centimètres de long et de quatre de diamètre. Un. The traditional means of obtaining this speed consist for the diver on the one hand of looking at his watch and on the other hand of his deep meter. There are also dive computers on which an optical indicator indicates a speed too low or too high. If one of these means is impractical, the other is very expensive and both have the disadvantage of asking for sustained attention and monopolizing the vision almost exclusively to this task.
The device according to the invention consists of a cylinder (fig.I) about twelve centimeters long and four in diameter. A.

extrémité est cynique et l'autre plate. A l'intérieur, côté cane, est fixé un lest. La partie plate faisant pastille dd fermeture. Le centre de gravite étant éloigné du centre géométrique, le dispositif prend dans 1' eau, une position verticale, cône en bas; ( ce c8ne ayant pour but d'empécher les bulles d'air venant de dessous de se fixer.)
Le dispositif qui peut être en aluminium ou en matière plastique injectée, possède une densité apparente infériour au liquide dans lequel
il se trouve. II est incompressible et indéformable dans les limites d'utilisation courantes.A la poussé d'Archimède qui est donc constante et qui pousse le dispositif vers la surface, s'opposent les forces de résistances hydrodymamiques qui, s'équilibrant avec la première, donnent au mobile une vitesse constante quelque soit la profondeur. ( cette vitesse étant d'autant plus grande que la densitê apparente du dispositif par rapport au liquide est faible et d'autant plus faible que sa densité est grande.)
Selon une forme de réalisation préférentielle (fig.2) la masse d'équilibrage est mobile(5) sur un axe (4) et permet par translation alternative, suivant l'axe longitudinal, d'utiliser le dispositif en avertisseur acoustique. A l'extérieur sur la partie cylindrique est impriméc une table de plongée.end is cynical and the other flat. Inside, cane side, is attached a ballast. The flat part forming a closing patch. The center of gravity being distant from the geometric center, the device takes in 1 water, a vertical position, cone down; (This c8ne is intended to prevent air bubbles coming from below to be fixed.)
The device, which may be made of aluminum or of injected plastic, has an apparent density lower than the liquid in which
it turns out that. It is incompressible and non-deformable within the limits of current use. At the Archimedes push, which is therefore constant and which pushes the device towards the surface, the forces of hydrodymamic resistances are opposed which, equilibrating with the first, give to the mobile a constant speed whatever the depth. (This speed being all the greater the lower the apparent density of the device relative to the liquid and the lower the higher the density.)
According to a preferred embodiment (fig.2) the balancing mass is movable (5) on an axis (4) and allows by alternative translation, along the longitudinal axis, to use the device as an acoustic warning device. Outside on the cylindrical part is printed a diving table.

Selon une variante, la pastille de fermeture (fig. 3.4.5) est formée par deux secteurs circulaires de 90 degrés d'ouverture sur laquelle une rondelle de même forme tourne sur un axe commun et permet par sa rotation de modifier la surface du martre couple et par la suite la vitesse de remontée du dispositif. According to a variant, the closing pad (fig. 3.4.5) is formed by two circular sectors of 90 degrees of opening on which a washer of the same shape rotates on a common axis and allows by its rotation to modify the surface of the marten torque and thereafter the ascent rate of the device.

Selon la figure six, la densité recherchée s'obtient directement par la masse propre du matéiau. According to FIG. Six, the density sought is obtained directly by the own mass of the material.

Selon une autre variante, un lest auxiliaire, amovible, fixé à l'éxtérieur, permet, selon q'il est en place où non, d'obtenir deux vitesses.  According to another variant, an auxiliary, removable ballast, fixed to the outside, makes it possible, depending on whether it is in place or not, to obtain two speeds.

Selon une forme de réalisation, le lest extérieur est constitue par une lame de couteau. According to one embodiment, the external ballast is constituted by a knife blade.

Selon une autre forme, le dispositif est sphérique et constitué de deux-demi-coquilles collées où visses. La section frontale de la sphère
étant de toute part identique, le centre de gravité et le centre géomé-
trique peuvent êtres confondus I1 en résulte que le dispositif peut n'être qu'une simple sphére pleine dont la densité requise s'obtient par
le matériau lui mSme: micro-sphéres noyées dans un plastique dur où
matériau alvéolaire rigide. According to another form, the device is spherical and consists of two half-shells glued or screwed. The front section of the sphere
being identical on all sides, the center of gravity and the geometrical center
trique can beings confused I1 results that the device can be only a simple solid sphere whose required density is obtained by
the material itself: micro-spheres embedded in a hard plastic where
rigid foam material.

Claims (9)

REVENDICATIONS 1) Dispositif sous marin indicateur de vitesse ascentionnellecaractérisé en ce qu'il est constitue par un volume invariable dont la densité est inférieur à l'unité. 1) Underwater ascentional speed indicator device characterized in that it is constituted by an invariable volume whose density is less than unity. 2) Dispositif selon la revendication t constitué par un cylindre (t) dont une extrémité est c8nique et l'autre fermée par une pastille (2). A l'intérieur du cylindre se trouve un lest (3) fixé c8té cône. 2) Device according to claim t consisting of a cylinder (t), one end is c8nique and the other closed by a pellet (2). Inside the cylinder is a ballast (3) fixed on the cone. 3) Dispositif selon les revendications 1 et 2 caractérise par une tige (4) traversant le lest (3) et d'un tube amortisseur faisant butée (iig.2). 3) Device according to claims 1 and 2 characterized by a rod (4) passing through the ballast (3) and a damping tube making a stop (iig.2). 4) Dispositif selon les revendications 1, 2 et 3 caractérisé  4) Device according to claims 1, 2 and 3 characterized par une pastille de fermeture, échancrée de deux secteur dè 90 degrds (T) by a closing pad, notched by two sectors of 90 degrees (T) sur laquelle tourne une rondelle de même forme (6): (fig. 3.4.5). on which a washer of the same shape (6) turns: (fig. 3.4.5). 5) Dispositif selon les revendications t et 4, caractérisé 5) Device according to claims t and 4, characterized en ce que le cylindre ne comporte pas de lest (fig. 6).  in that the cylinder does not include ballast (fig. 6). 6) Dispositif selon les revendications 1 et 4 caractérisé en ce que le lest est extérieur et constitué par une lame de couteau. 6) Device according to claims 1 and 4 characterized in that the ballast is external and constituted by a knife blade. 7) Dispositif selon les revendications 1.2.3.4.5 et 6 caractérisé en ce qu'un lest auxiliaire, fixé au dispositif, est amovible. 7) Device according to claims 1.2.3.4.5 and 6 characterized in that an auxiliary ballast, attached to the device, is removable. 8) Dispositif selon la revendication 1 oaractSrisé en ce que la forme du dispositif est sphérique. 8) Device according to claim 1 oaractSrisé in that the shape of the device is spherical. 9) Dispositif selon les revendications t et T selon une forme quelconque, caractérisé en ce que le matériau est constitué par une matiére plastique rigide alvéolaire.  9) Device according to claims t and T according to any form, characterized in that the material consists of a rigid cellular plastic material.
FR8405865A 1984-04-11 1984-04-11 UNDERWATER TACHYMETER Expired FR2563012B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8405865A FR2563012B1 (en) 1984-04-11 1984-04-11 UNDERWATER TACHYMETER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8405865A FR2563012B1 (en) 1984-04-11 1984-04-11 UNDERWATER TACHYMETER

Publications (2)

Publication Number Publication Date
FR2563012A1 true FR2563012A1 (en) 1985-10-18
FR2563012B1 FR2563012B1 (en) 1986-08-08

Family

ID=9303142

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8405865A Expired FR2563012B1 (en) 1984-04-11 1984-04-11 UNDERWATER TACHYMETER

Country Status (1)

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FR (1) FR2563012B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587296A1 (en) * 1985-09-17 1987-03-20 Jullian Michel Rate-of-rise guide float for submarine divers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989050A (en) * 1955-05-04 1961-06-20 Alfred M Mayo Warning device
US3933049A (en) * 1974-07-03 1976-01-20 Farallon Industries, Inc. Decompression indicating instrument for divers
EP0041194A1 (en) * 1980-05-24 1981-12-09 Theo Birle Apparatus to automatically limit the upward speed during the ascent of a diver
DE3027290A1 (en) * 1980-07-18 1982-02-25 Carlo Torino Alinari Decompression meter for divers - has slidable graduated segment, indicating when decompression are necessary, actuated by diver in accordance with maximum depth reached

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2989050A (en) * 1955-05-04 1961-06-20 Alfred M Mayo Warning device
US3933049A (en) * 1974-07-03 1976-01-20 Farallon Industries, Inc. Decompression indicating instrument for divers
EP0041194A1 (en) * 1980-05-24 1981-12-09 Theo Birle Apparatus to automatically limit the upward speed during the ascent of a diver
DE3027290A1 (en) * 1980-07-18 1982-02-25 Carlo Torino Alinari Decompression meter for divers - has slidable graduated segment, indicating when decompression are necessary, actuated by diver in accordance with maximum depth reached

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587296A1 (en) * 1985-09-17 1987-03-20 Jullian Michel Rate-of-rise guide float for submarine divers

Also Published As

Publication number Publication date
FR2563012B1 (en) 1986-08-08

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