초록 ▼

A collapsible container is formed by folding a twolayer blank having a unitary flexible layer and a separated rigid layer into a shape determined by the number of side panels of the blank. The container is held in the assembled position by fastened corresponding pairs of fasteners on adjacent side p

A collapsible container is formed by folding a twolayer blank having a unitary flexible layer and a separated rigid layer into a shape determined by the number of side panels of the blank. The container is held in the assembled position by fastened corresponding pairs of fasteners on adjacent side panels. The flexible and rigid layers are joined together by lamination and/or stitching. The containers are reversible, so that either the rigid or flexible layer may be exposed on the outside of the assembled container.

대표청구항 ▼

A collapsible container is formed by folding a twolayer blank having a unitary flexible layer and a separated rigid layer into a shape determined by the number of side panels of the blank. The container is held in the assembled position by fastened corresponding pairs of fasteners on adjacent side p

A collapsible container is formed by folding a twolayer blank having a unitary flexible layer and a separated rigid layer into a shape determined by the number of side panels of the blank. The container is held in the assembled position by fastened corresponding pairs of fasteners on adjacent side panels. The flexible and rigid layers are joined together by lamination and/or stitching. The containers are reversible, so that either the rigid or flexible layer may be exposed on the outside of the assembled container. portion of a circumference of the drive piston (8). 3. A piston holder according to claim 2, wherein the friction member (15) is formed as a rigid body, and the pressure element (19) has a non-rigid support. 4. A piston holder according to claim 2, wherein the adjusting surface (17) of the friction member (15) is formed as non-rigid surface, and the pressure element (19) is fixedly secured. 5. A piston holder according to claim 1, wherein the pressure element (19) comprises a bolt (20) extending in a tangential direction with respect to the drive piston (8). 6. A piston holder according to claim 5, where in the bolt (20) is supported for rotation about a longitudinal axis thereof. 7. A piston holder according to claim 1, wherein the adjusting surface is formed as one of a wedge surface and a conical surface. 8. A piston holder according to claim 1, wherein a plurality of friction members (15), each of which is associated with a respective pressure element, are arranged over a circumference of the drive piston. 9. A piston holder according to claim 1, wherein the friction member is formed as a conical spring sleeve (24), and the pressure element (7') has an inner core (25) for receiving the spring sleeve (24) and having a profile corresponding to that of the spring sleeve. 10. A piston holder according to claim 9, wherein the spring sleeve (24) is provided with axial slots. 11. A piston holder according to claim 9, wherein the spring sleeve (24) is formed of several sections. 12. A piston holder according to claim 9, wherein the spring sleeve (24) has a meander-shaped front end in the radial direction that contacts the drive piston (8). 13. A piston holder according to claim 1, further comprising spring means (22, 26) for biasing the friction member (15, 24) in an axial direction of the drive piston (8) toward the pressure element (19, 7'). 14. A piston holder according to claim 1, further comprising a stationary stop for limiting displacement of the friction member (15, 24) in a direction toward a rear end of the drive piston (8). 15. A piston holder according to claim 1, wherein in the friction member (15, 24) is arranged in a region of the piston body (10) of the drive piston (8).