Abstract: A stopper structure including: a rigid abutting member extending in its longitudinal direction with a rectangular cross sectional shape; and a rubber stopper having a base portion of tubular cross sectional shape and secured press-fit onto the rigid abutting member without being adhesive thereto, two peripheral projections formed on laterally opposite sides of a first abutting plane of the base portion and extending in the longitudinal direction, and a central projection formed on an intermediate area interposed between the peripheral projections of the first abutting plane of the base portion. The peripheral projections are situated above laterally opposite edges of a first abutting plane of the rigid abutting member, and have a width dimension extending inside and outside the laterally opposite edges. The central projection projects outward from the first abutting plane of the base portion with the same height as the peripheral projections.

Abstract: A stopper structure including: a rigid abutting member extending in its longitudinal direction with a rectangular cross sectional shape; and a rubber stopper having a base portion of tubular cross sectional shape and secured press-fit onto the rigid abutting member without being adhesive thereto, two peripheral projections formed on laterally opposite sides of a first abutting plane of the base portion and extending in the longitudinal direction, and a central projection formed on an intermediate area interposed between the peripheral projections of the first abutting plane of the base portion. The peripheral projections are situated above laterally opposite edges of a first abutting plane of the rigid abutting member, and have a width dimension extending inside and outside the laterally opposite edges. The central projection projects outward from the first abutting plane of the base portion with the same height as the peripheral projections.

Abstract: A vibration damping device, including: first and second mounting members spaced apart from one another; an elastic body interposed between and connecting the two mounting members; a diaphragm cooperating with the elastic body to define therebetween a fluid chamber; and a partition structure including a partition member and a flexible movable plate disposed in a central opening of the partition member so as to divide the fluid chamber into primary and auxiliary fluid chambers communicating through an orifice passage, wherein the movable plate has a primary-fluid-chamber-side recess which is formed in one of opposite surfaces thereof on the side of the primary fluid chamber and an auxiliary-fluid-chamber-side groove in the other surface located on the side of the auxiliary fluid chamber so as to be positioned radially outwardly of the recess and which continuously or discontinuously extends in the circumferential direction.

Abstract: A fluid-filled vibration-damping mount of suspension type, wherein a lower open-end of a second mounting member is fluid-tightly closed by a first mounting member and a tapered elastic body interposed therebetween. An upper open-end portion of the cylindrical portion is closed by a flexible layer for forming a fluid chamber between the elastic body and the flexible layer, which is divided by a partition member into a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by the flexible layer, which are mutually communicated through an orifice passage. A pair of elastic restricting projections bonded to the partition member at respective circumferential positions with a circumferential length smaller than a half of a circumference of the partition member, project toward a circumferential region defined between the elastic body and the second mount member, for narrowing the region.

Abstract: A fluid-filled vibration-damping device including: a first mounting member; a second mounting member; an elastic body elastically connecting the first and second mounting members and defining a fluid-sealing area filled with a non-compressible fluid; and a gas-retaining hole open to the fluid-sealing area through an opening thereof, and capable of retaining a predetermined volume of gas therein with the opening thereof facing vertically upward within the non-compressible fluid. A method of manufacturing the fluid-filled vibration-damping device is also disclosed.

Abstract: A vibration damping device, including: first and second mounting members spaced apart from one another; an elastic body interposed between and connecting the two mounting members; a diaphragm cooperating with the elastic body to define therebetween a fluid chamber; and a partition structure including a partition member and a flexible movable plate disposed in a central opening of the partition member so as to divide the fluid chamber into primary and auxiliary fluid chambers communicating through an orifice passage, wherein the movable plate has a primary-fluid-chamber-side recess which is formed in one of opposite surfaces thereof on the side of the primary fluid chamber and an auxiliary-fluid-chamber-side groove in the other surface located on the side of the auxiliary fluid chamber so as to be positioned radially outwardly of the recess and which continuously or discontinuously extends in the circumferential direction.

Abstract: A stopper structure including: a rigid abutting member extending in its longitudinal direction with a rectangular cross sectional shape; and a rubber stopper having a base portion of tubular cross sectional shape and secured press-fit onto the rigid abutting member without being adhesive thereto, two peripheral projections formed on laterally opposite sides of a first abutting plane of the base portion and extending in the longitudinal direction, and a central projection formed on an intermediate area interposed between the peripheral projections of the first abutting plane of the base portion. The peripheral projections are situated above laterally opposite corners of a first abutting plane of the rigid abutting member, and have a width dimension extending inside and outside the corners. The central projection projects outward from the first abutting plane of the base portion with a height smaller than that of the peripheral projections.

Abstract: A fluid-filled vibration-damping mount of suspension type, wherein a lower open-end of a second mounting member is fluid-tightly closed by a first mounting member and a tapered elastic body interposed therebetween. An upper open-end portion of the cylindrical portion is closed by a flexible layer for forming a fluid chamber between the elastic body and the flexible layer, which is divided by a partition member into a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by the flexible layer, which are mutually communicated through an orifice passage. A pair of elastic restricting projections bonded to the partition member at respective circumferential positions with a circumferential length smaller than a half of a circumference of the partition member, project toward a circumferential region defined between the elastic body and the second mount member, for narrowing the region.

Abstract: A fluid-filled vibration-damping device including: a first mounting member; a second mounting member; an elastic body elastically connecting the first and second mounting members and defining a fluid-sealing area filled with a non-compressible fluid; and a gas-retaining hole open to the fluid-sealing area through an opening thereof, and capable of retaining a predetermined volume of gas therein with the opening thereof facing vertically upward within the non-compressible fluid. A method of manufacturing the fluid-filled vibration-damping device is also disclosed.