Shock and vibration damper

Claim 2

A damper for damping shocks and vibrations between two elements, comprising means defining a housing having a base wall and adapted to be connected to one of said elements, an elastically yieldable bell-shaped supporting membrane bearing on said base wall, an opposing bell-shaped membrane, a piston in cooperative relation to the two membranes and adapted to be connected to another of said elements, and an additional elastically yieldable bell-shaped membrane having a stiffened peripheral portion and slidable in said housing between said supporting membrane and said opposing membrane, the interior of said housing being in communication with the atmosphere.

Claim 3

A damper as claimed in claim 1, comprising an interposed mount slidably mounted in said housing, said additional membrane having said peripheral portion secured to said interposed mount.

Claim 4

A damper as claimed in claim 1, wherein said supporting membrane has an apex portion in contact with said base wall and means secure said peripheral portion of said additional membrane to a peripheral portion of said supporting membrane.

Claim 5

A damper as claimed in claim 1, comprising an interposed mount slidably mounted in said housing, said supporting membrane having an apex portion in contact with said base wall, said peripheral portion of said supporting membrane being engaged in an annular groove in said mount so as to be secured to said mount, and said peripheral portion of said additional membrane being engaged in another annular groove in said mount so as to be secured to said mount.

Claim 6

A damper as claimed in claim 4, wherein said mount comprises a ring.

Claim 7

A damper as claimed in claim 2, wherein said supporting membrane has a peripheral portion in contact with said base wall, said mount comprising a disc having a first plane face and a second plane face, and said supporting membrane having an apex portion bearing against said plane face, said second plane face having a groove in which said periphery of said additional membrane is engaged.

Claim 8

A damper as claimed in claim 2, wherein said supporting membrane has a peripheral portion in contact with said base wall and said mount comprises a ring having a first face comprising a first groove and a second face comprising a second groove, said peripheral portion of said additional membrane being secured in said first groove, a further bell-shaped additional membrane having a peripheral portion secured in said second groove.

Claim 9

A damper as claimed in claim 2, wherein said housing comprises a plurality of interposed mounts, each mount being secured to a pair of bell-shaped membranes.

Claim 10

A damper as claimed in claim 8, wherein said mounts have identical sizes in transverse planes of said housing.

Claim 11

A damper as claimed in claim 8, wherein said mounts have different sizes in transverse planes of said housing and said housing has a stepped form and comprises portions of different sizes in which said mounts of different sizes are slidably mounted.

Claim 12

A damper for damping shocks and vibrations between two elements, comprising means defining a housing having a base wall and adapted to be connected to one of said elements, an elastically yieldable supporting bell-shaped membrane bearing on said base wall, an opposing bell-shaped membrane, a piston in cooperative relation to the two membranes and adapted to be connected to another of said elements, a plurality of elastically yieldable additional bell-shaped membranes having peripheral portions and means combined with said peripheral portions for stiffening said peripheral portions, said additional membranes being slidable in said housing between said supporting membrane and said opposing membrane.

Claim 13

A damper for damping shocks and vibrations between two elements, comprising means defining a housing having a base wall and adapted to be connected to one of said elements, an elastically yieldable supporting bell-shaped membrane bearing on said base wall, an opposing bell-shaped membrane, a piston in cooperative relation to the two membranes and adapted to be connected to another of said elements, a plurality of elastically yieldable additional bell-shaped membranes having peripheral portions and means combined with said peripheral portions for stiffening said peripheral portions, said additional membranes being slidable in said housing between said supporting membrane and said opposing membrane.