Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1980-10-17
1982-09-07
Hall, George T.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
29225665, 29225669, B65D 4532
Patent
active
043479448
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a cover for a cylinder-shaped pressure container or an autoclave which at the mouth edge has members for holding a tight closing closure member against the mouth edge.
Pressure containers often work by a pressure of up to 15 ato. The high pressure makes heavy demands on the cover of the container. It is, of course, possible to make covers and closing mechanisms which can stand the high working pressures in the container. However, it is also necessary to make the cover and the closing mechanism in such a way that a suitably simple operation is achieved when using pressure containers. Previously used covers are either provided with bayonet closing mechanisms or locking rings consisting of two semi-circular locking rings which are clamped around a collar on the container and a similar collar on the cover. The bayonet closing mechanism is made out of a number of radially outwardly arranged pins on the cover, which pins cooperate with incised, sloping slots at the mouth edge of the container. On account of the heavy demands which for security reasons are made on the cover, the dimensions are made in a way which requires special tools and expertise at the manufacturing. Therefore, there are only few firms in Europe which can take up such a manufacturing. Further the operation of the cover requires much work and time because of the many bolts which are to be screwed on and off the pins in the bayonet closing mechanism.
For smaller pressure containers it may be possible to use the closing mechanism known from U.S. Pat. No. 1,958,923 consisting of two semi-circular locking rings which cooperate with collars or flanges on the cover and container mouth. This closing mechanism is, however, rather complicated to manufacture in the required dimensions.
The object of the present invention is to indicate a cover of the type mentioned in the introduction which can overcome the drawbacks of the previously known covers, i.e. that the cover can be made by usual working processes and machine tools.
This object is achieved by means of a cover which is characterized in that the mouth edge of the container and the closure member both have a radially outwards directed annular flange, the flanges having cooperating contact faces and each a sloping surface, whereby the width of the two flange members is decreasing towards the outer edge, the cover further comprising a retaining ring which is placed close to the flange members and which is ended up by two free ends, and that the retaining ring has a slot which is open towards the centre and corresponding to the cross section of the flange members, and where the circumference of the retaining ring is smaller than the outer circumference of the flange members so that the free ends of the ring can be pulled towards each other, when the flange members are assumed in the slot of the ring. The retaining ring consists of a coherent circular piece which facilitates the manufacturing of the locking ring and the operation of this after the mounting on the pressure container.
The cover may be characterized in that the free ends of the retaining ring can be removed from each other so that the inner diameter of the ring is at least similar to the outer diameter of the flange members for liberation of the closure member and are pulled towards each other for holding the closure member by means of driving means. The use of driving means for activating the retaining ring facilitates the operation of the cover and the security of using the cover according to the invention is increased.
The cover may further be characterized in that the driving means are of a hydraulic type. The application of hydraulic driving means is particularly advantageous.
The invention will be described further with reference to the drawing, where
FIG. 1 shows a cover according to the invention seen from the end,
FIG. 2 shows the same, but with the retaining ring in an open position, and
FIG. 3 shows the cover seen in a section along the line III--III in FIG. 1.
FIGS. 1 and 2 shows a cover 3 wit
REFERENCES:
patent: 1958923 (1923-09-01), Mohler
patent: 2271855 (1942-02-01), Cleveland et al.
patent: 2541205 (1951-02-01), Christophersen
patent: 3029724 (1962-04-01), Lee
patent: 3144165 (1964-08-01), Pegon et al.
patent: 3310329 (1966-01-01), Luker
LandOfFree
Cover for a cylinder-shaped pressure container does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cover for a cylinder-shaped pressure container, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cover for a cylinder-shaped pressure container will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338796