DE1085428B - Ball-shaped headpiece for a protective suit, especially a pressure suit - Google Patents

Description

The invention relates to a spherical head piece for a protective suit, but in particular a pressure suit, how it is worn by people, the abnormally low atmospheric pressures and temperatures may be exposed. Such a head piece should be arranged over a conventional breathing mask, others on the head Equipment and a helmet can be worn; it should also be flexible , can be worn openly under normal pressure conditions and only in case of danger close tightly.

A well-known spherical head piece for a pressure suit does not meet these requirements, since it is with the pressure suit is screwed and provided with breathing hoses through which the exhaled air of an air purification cartridge and the cleaned air is fed back to the head piece. The purpose of the invention is it is therefore necessary to create a head piece that meets the conditions mentioned. According to the invention "" consists The head piece consists of two parts, one part of which is arranged on the suit and the other part for the purpose of opening the head piece is movably connected to the first part, and it has devices by means of which the movable part, which is at least partially made of flexible material, is moved from its open position to the closed position and the edges of both parts against each other be sealed.

Further features of the invention are that the edges of both parts of the head piece to mutual sealing are provided with inflatable ring lines, of which the ring line is movable Part has a larger circumference than the ring line of the part arranged on the suit, and that devices are arranged by means of their pressurized gas in a certain order in the lines is admitted. The ring line of the movable part can be in the open position of the head piece unfolded on itself and, when inflated, stretched into a position in which it forms the ring line of the other part engages around from the outside or engages through from the inside, and the devices can be designed in this way be that the ring line of the part arranged on the suit after the ring line of the movable Partly is inflated and thereby creates a seal against the other ring main.

Further features of the invention are the subject of claims 4 to 7.

The invention is explained using an exemplary embodiment shown in the drawing. It shows

Fig. 1 is a side view of the fully opened head piece,

2 and 3 side views of the partially or completely closed head piece,

Spherical head piece

for a protective suit,
especially a pressure suit

Applicant:
Vickers Limited, London

Representative: Dipl.-Phys. W. Kemp, patent attorney,
Cologne-Lindenthal, Laudahnstr. 27/29

Kenneth Gabriel Williams, Faxnham, Surrey,
and Jack Raymond Green, Weybridge, Surrey

(Great Britain),
have been named as inventors

Fig. 4 is a rear view of the head piece in the partially closed position and

Fig. 5 is a scheme .the for closing a head piece according to the invention serving lines.

The head piece shown in the figures is arranged on a pressure suit, such as that used by aircraft crews used when flying at high altitudes. It is carried openly and in standby position closes as soon as the cabin pressure drops to the external pressure at altitudes of over 12,000 m.

The closed head piece has a spherical shape, which FIG. 3 shows. There is enough space in it for the head of the suit wearer even if he has a hard hat, a breathing mask and carries other equipment.

The part 1 of the headpiece arranged on the suit consists of a flexible, gas-tight fabric. Of the other, movable part 2 consists partly of a-same Fabric and partly made of clear, flexible polyvinyl chloride or some other light weight Material with similar properties. Its more consistent In the closed position, the face part 10 encloses the face of the wearer (FIG. 3); with open

009 550/28

The head piece is combined with the movable part 2. Part 1 is with a network of inflatable Rubber lines 3 are provided which are interconnected and which when inflated be, stretch themselves into the position shown in Fig. 3, in which the part 1 the back of the head and wraps the underside of the chin. At the edge of the part 1 there is also an inflatable ring line 4 arranged, the purpose of which is described below. ίο

The edge of the movable part 2 is also provided with an inflatable ring line 5 which, if the head piece is in the open positions shown in FIGS. 1 and 2, on both sides of the head is unfolded on itself at the point marked 7. The upper part of the ring line 5 is in the Part 2 incorporated, in such a way that the ring line after inflation behind the upper part of the ring line 4, which in turn is incorporated into the material of part 1. When inflating, the ring line 5 pivoted about the folding points 7, whereby at the same time the part 2 with the face part 10 is also in the closed position shown in Fig. 3 is moved.

The process just described takes place while the ring line 4 still remains uninflated, and since the ring line 5 has a slightly larger radius than the ring line 4, it engages - if it has the in Fig. 3 reached the position shown - outside over the lower part of the line 4. If then then the Ring line 4 is inflated, it expands in the edge region of part 2 in such a way that it forms a seal is pressed against the inner surface of the ring line 5.

The part 1 is usually attached to the collar of the pressure suit 6 or consists of one with this Piece. The inflatable parts of the head piece can be inflated with compressed gas from the same compressed gas supply as needed for the suit itself; the head piece loops are in one in the Drawing, not shown, inflated with gas from a separate high-pressure accumulator, which over a pressure actuated valve is controlled.

The arrangement for inflating the lines 3 and the ring lines 4, 5 of the head piece is schematic shown in FIG. If the head piece is to be closed, the lines 3 are first inflated, whereby the rear part of the head piece is erected in the position shown in FIG. the Lines 3 are connected to the ring line 5 through a valve 8, which either opens automatically, when the pressure in the lines 3 reaches a predetermined value, or that with a nozzle of a suitable type Passage cross section is provided; the inflation of the ring line 5 forms the first stage in Closing the part 2. The next and final stage, namely the inflation of the ring line4 to the The purpose of sealing part 2 in the closed position shown in FIG. 3 is achieved by opening valve 9 initiated, through which gas is let into the ring line 4 when the pressure in the ring line 5 has reached a predetermined value.

When the suit is fully pressurized, the pressure in the headpiece creates forces that strive are to push the individual parts apart and thus to a large extent the contact pressure between the Increase the area of the adjacent ring lines.

In another embodiment, the ring line 5 of the part 2 can have a smaller radius than the ring line 4 of the part 1, so that the ring line of the part 2 passes through the ring line of the part 1 when it is closed.

In the embodiment shown in the drawing and described above, the rests Part 1 initially fully folded on the wearer's shoulders. If necessary, part 1 can also be made of a semi-rigid material, so that the part 1 in the open position a similar Position as in Fig. 2 assumes. In this embodiment, the line network 3 can be omitted, and the loop that is inflated first is loop 5 in this case.

Claims (7)

Patent claims: 1. Spherical head piece for a protective suit, in particular a pressure suit, marked by two parts (1, 2), of which one part (1) is arranged on the suit (6) and the other part (2) movably connected to the first part (1) for the purpose of opening the head piece is, and by devices by means of which the movable part (2), at least partially from consists of flexible material, is moved from its open position to the closed position and the edges of both parts are sealed against each other. 2. Head piece according to claim 1, characterized in that the edges of both parts (1, 2) for mutual sealing with inflatable ring lines (4, 5) are provided, of which the Ring line (5) of the movable part (2) has a larger circumference than the ring line (4) of the on the suit (6) arranged part (1), and that devices are arranged by means of them Pressurized gas is admitted into the lines in a certain order. 3. Head piece according to claim 2, characterized in that in the open position of the head piece the Ring line (5) of the movable part (2) is unfolded on itself and when inflated into a Position is stretched in which it surrounds the ring line (4) of the other part (1) from the outside or extends through from the inside, and that the devices are designed such that the ring line (4) of the part (1) arranged on the suit (6) after the ring line (5) of the movable part (2) is inflated is and thus rests against the other ring line (5) in a sealing manner. 4. Head piece according to claim 2 or 3, characterized in that the suit (6) arranged Part (1) consists of flexible material and a network of inflatable lines has that erect it when inflating in a position in which then the closing of the movable Part (2) takes place. 5. Head piece according to claim 2 or 4, characterized in that the devices such are designed that the ring line (5) of the movable part (2) is inflated when the Ring line (4) of the part (1) arranged on the suit (6) is filled. 6. Head piece according to claim 4 or 5, characterized in that the ring line (4) of the am Suit (6) arranged part (1) via a pressure-actuated valve with the pipe network this part is connected. 7. Head piece according to one of the preceding claims, characterized in that the am Suit (6) arranged part (1) consists of gas-tight, flexible material and in the position of use the back of the head and the underside of the Includes chin of the suit wearer and that the movable part (2) partly consists of the same Material and partly consists of a transparent, flexible material. References considered: British Patent No. 429,276. 1 sheet of drawings