DE1228145B - Gas-tight ready-to-use container for breathing apparatus - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

A62b

German class: 61 a - 29/35

Number: 1228145

File number: D 44061 V / 61 a

Filing date: April 2, 1964

Open date: November 3, 1966

It is known to be in front of gas and water vapor too protective breathing apparatus in sheet metal containers, which are secured with a rubber ring sealed sheet metal cover are closed. These containers have the disadvantage that only one low leakage, which can easily occur due to the thin-walled design of the container walls, in the course of time air and thus also water vapor can get into the container. So that prevents this is, a well-known container is not only with a lid but also with an underlying, preferably thin-walled, flexible closure body, ζ. B. a rubber cap completed, the prevents the ingress of humidity. This design is cumbersome to build; aside from that opening takes a relatively long time.

It is also a gas-tight standby container for breathing apparatus known, which consists of a relatively thick-walled lower part made of moisture-proof plastic, e.g. B. polyethylene, and consists of a cover made of the same building material, with its relatively wide, in the lower part protruding elastic edge rests resiliently and tightly against the inner wall of the lower part.

Furthermore, standby containers for filter respirators od. Like. Become known in which the Containers consisting of two or more shells with a tension member encompassing them under tension is held together Here too there is a risk of leaks.

In order to close the devices with the known standby containers even if the container leaks Protect, the proposal has also become known that the devices in a water and water vapor impermeable Keep the envelope packed in the container.

Furthermore, a device for gas-tight closing and rapid opening of a container, in particular a ready-to-use container for breathing apparatus, is known, the cover of which is pressed against a cover support on the lower part of the container with the interposition of a sealing ring. In this container, two brackets are arranged near the edge of the container base, to which steel straps are connected, the other ends of which are held together by a quick-release fastener. To generate the contact pressure of the lid against the lower part of the container, which is necessary for gas-tightness, the straps are tensioned. For this purpose, retaining plates are hinged to each bracket, through which screws are inserted, which are connected to the steel straps
Respirators

Applicant:

Drägerwerk, Heinr. & Bernh. Dräger,

Lübeck, Moislinger Allee 53/55

are. The locking elements holding the steel band ends together are like a rocker arm lock designed so that they fall apart when the shutter is opened. For gas-tight closing of such a container, the closure must first be closed. Then are the turnbuckles to attract. Several operations are therefore necessary before the container is closed in a gas-tight manner.

The invention relates to such a gas-tight stand-by container for breathing apparatus, which consists of consists of two parts which are pressed together with locking means, the contact pressure of which is adjustable is. The invention is based on the object of ensuring that the container parts are firmly seated during manufacture and to ensure handling of simpler closure means. The solution is that as Closure means at least one bayonet-like closure is used, the one of which is arranged on the one container part Bayonet pin as a gear connected to a control lever and its with the other Container part connected elongated hole guide is formed like a rack on its pressure side. At the Closing the standby container designed according to the invention are first of all the two container parts, as usual with the bayonet lock, moved against each other, the bayonet pin forming Gear engages in the slot which lies in the longitudinal direction of the container parts. Then the container parts rotated against each other, whereby the gear is inserted into the obliquely arranged elongated hole guide. The bayonet pin, which is designed as a gear, is then used to tighten the bayonet lock firmly rotated the operating lever attached to it. This allows the bayonet catch to be tightened very firmly will. This is the sealing means which produces the gas-tight connection between the two container parts easier to train and, above all, faster to operate, since it also includes closing and tensioning the same part can be done in one operation.

Further features of the invention are the subject of the subclaims.

609 709/37

An exemplary embodiment is explained with reference to the schematic drawing. It shows

A b b. 1 is a half exterior view of the ready-to-use container,

A b b. 2 shows a longitudinal section through a container half and

A b b. 3 shows a section in plane AA through the cover.

The ready container consists of the container parts 1 and 2. The lower part is on his Lid facing edge provided with a retracted part 3, which for guiding the lid during serves to touch down. The distance between the inside of the lid and the face of the retracted part 3 is relatively large, so that the lid can be easily removed even after denting can be.

For sealing the lid against the lower part of the container serve the two seals 4 and 5. The upper seal 4 is at the lower end of the retracted Part 3. The lower seal 5 is inserted into a fold 6 which is attached to the side of the lower part.

The cover is provided with an edge 7 designed as a collar. The transition point 8 between the The cover and the collar rests against the seal 4, while the lower edge 9 of the collar rests against the seal 5.

. A bayonet-like closure, the bayonet pin of which acts as a gearwheel, is used to close the cover 10 is formed. A shaft 11 is connected to the gearwheel and is driven through a bore 12 in the edge 7 outwards and then bent over to form an operating lever 13.

The gear engages in the elongated hole guide 14 on the container lower part, which on its pressure side 15 is like a rack is formed and is inclined. After the lid has been put on, the container parts 1 and 2 rotated against each other. When pivoting the operating lever 13, the gear 10 rolls on the Toothed rack off, the lid is rotated with respect to the lower part of the container and both are pulled tightly against each other will.

Two or more bayonet locks can be provided, which are uniform over the circumference of the container can be distributed. The other bayonet locks are also equipped with racks and gears equipped, so that, for example, with two opposing closures of the illustrated Art, the lid pressed evenly over its entire circumference against the seals 4 and 5 will.

The seal 4 can be made of a softer material than the seal 5, as it is primarily serves to guide the lid.

The operating lever 13 is in its end position according to A b b. 1 held by a seal 16 and lies also a stop 17 on.

The operating lever in the area of the Shaft 11 is soldered tightly to the hole 12 in the cover. The soldering is an additional safeguard against unintentional opening of the lock. The soldering and the seal are dimensioned so that they in Emergency cases can be easily resolved.

When the lock is to be released, the operating lever 13 is vigorously counterclockwise torn from the seal by swiveling. The soldering is destroyed at the same time. With further The gear wheel rotates backwards on the rack. The lid rises from the lower part of the container away.

Claims (6)

Patent claims: 1. Gas-tight ready-to-use container for breathing apparatus, which consists of two parts that are connected to Closure means are pressed against each other, the contact pressure of which is adjustable, characterized by g e, that serves as a closure means at least one bayonet-like closure, its bayonet pin arranged on the one holding part (2) as with an operating lever (13) connected gear (10) and its slot guide connected to the other container part (1) (14) is designed like a rack on its pressure side (15). 2. Stand-by container according to claim 1, characterized in that the container parts (1 and 2) with two or more bayonet-like bayonets evenly distributed around the circumference of the container Closures are equipped. 3. Ready container according to claim 1 or 2, characterized in that the toothed wheel (10) is on the inside of the container part connected to it (2) is arranged and that the shaft (11) of the gear through a hole (12) in the edge (7) of the container part (2) to the outside and is provided on the outside with a bend forming the operating lever (13). 4. Ready container according to claim 3, characterized in that the shaft (11) when closed Closure in the area of the bore (12) is soldered to the container part (2) provided with this. 5. Ready container according to one of claims 1 to 4, characterized in that the Operating lever (13) when the shutter is closed its movement in the opening direction limiting stop (17) is applied. 6. Ready container according to one of claims 1 to 5, characterized in that the Operating lever (13) with the lock closed in its position with a seal (16). is secured. Considered publications:
German Patent Nos. 821463, 835 835, 156, 879 513,1 059 293. 1 sheet of drawings 609 709/37 10.66 © Bundesdruckerei Berlin