A fabric reinforced, resilient brake diaphragm for use in a fluid pressure operated braking system is provided. The diaphragm comprises an annular outer flange for engaging the housing of the braking system, a bottom planar wall having an interior surface for engaging the piston of the braking system, an annular sidewall connecting the outer flange and the bottom planar wall and a plurality of spaced planar tabs disposed on the interior surface of the bottom planar wall extending radially from t...

The invention proposes a double-walled body with cover panels between which spacers are arranged. The double-walled body is distinguished in that the spacers are designed as cylinders, in particular tubes (6), of which the cylinder axes run orthogonally with respect to the cover-panel surfaces, in that one set of tubes (6) (first tubes (7)) is of a length which corresponds to the clear width between the cover panels (3, 5), and in that another set of tubes (6) (second tubes (9)) engages in, or t...

A double-walled spiral pipe in accordance with the present invention is composed of an outer wall 10 having a cylindrical shape, which is prepared by winding spirally a coated steel plate 11 having corrugations 12; and an inner wall 20 having a cylindrical shape, which is contacted with the wave bottom of corrugations of said outer wall 10, and can contracted or elongated depending upon a change of the pitch of the corrugations of said outer wall 10. The inner wall 20 having a cylindrical config...

A preform and a blow molded container formed therefrom and having plural cavities or compartments for providing enhanced properties including vacuum containers for hot and cold product, or barrier materials including gases or layered material, improved creep resistance, use of lower cost and/or recycled materials, increased wall strength and aerosol properties.

A double-walled curtain of pleated material, wherein at least one fold of pleated material of the one wall is connected by means of two parallel connecting strips (10,11) to one or more folds of the other wall for the forming of a module, whereas the outward facing surfaces of the connecting strips bear co-acting coupling means, said modules being adapted to be extruded, whereby the height and width of the curtain can be determined in a simple manner, due to the tubular and endless length of mat...

A double-walled cooking utensil provides inner and outer metal layers which are nested together and permanently connected along peripheral flanges. Each layer provides a planar bottom portion which cooperate with each other to define a thin chamber therebetween. A sheet of reflective aluminum is positioned in such chamber and resists the transfer of radiant heat from the bottom surface of the outer layer to the bottom surface of the inner layer which constitutes the cooking surface of the utensi...

A flexible walled security container having an opening provided with slide fastener means along the edges of the opening and locking means carried by the container in position to releasably retain the slider of the slide fastener means in position closing the container.

A thick walled pressure vessel having a tubular wall is prestressed by bending to resist extreme external pressures, the bending being applied by the external pressure being resisted. The tubular or cylindrical wall contains internal axial cuts which divide the wall into axial sectors with faying surfaces therebetween so that the application of external pressure decreases the curvature of the sectors to prestress them.

A carton constructed of a single folded cardboard blank having hollow wall units along the periphery thereof, means on each of the walls at opposite ends thereof for interlocking adjacent walls together, said locking means being located on the upper wall portions of the hollow wall units and being so arranged as to require opposing ones of hollow wall units to be moved inwardly and subsequently outwardly to effect the interlock between adjacent walls. Moreover, the spacing between the lower ends...

There is described a thin-walled metal container for storing and serving food and having a receptacle portion provided, at its rim, with a continuous flange including two opposed, longitudinally straight zones and a lid portion provided with an edge zone crimped about said flange. At two opposed ends of the container, adjacent said straight zones, each crimp zone continues in a pull tab which, when actuated, disengages the last-named crimp zones, while the said longitudinally straight zones of t...