Patent ID: 7264097

Claim:
A dynamic damper, comprising: a rectangular mass member; a support frame member fixable to a vibrative member, and including a substantially rectangular support frame portion surrounding said mass member with a given gap distance therebetween and having first and second support sides opposed to each other in a first direction with said mass member disposed therebetween so that the first support side of the support frame member is opposed in the first direction to a first supported side of the mass member, and the second support side of the support frame member is opposed in the first direction to a second supported side of the mass member, said support frame member being closed in a circumferential direction thereof, while being open in an axial direction perpendicular to the first direction; at least one longitudinal elastic connecting members being disposed in a spaces defined between the first support sides of said support frame portion and the first supported side of said mass member, and being bonded by vulcanization at opposite ends thereof to the first support side and the first supported side; and at least another longitudinal elastic connecting member being disposed in a space defined between the second support side of said support frame portion and the second supported side of the mass member, and being bonded by vulcanization at opposite ends thereof to the second support side and the second supported side, wherein said support frame portion is deformed so that said first and second support sides are relatively displaced toward each other to pre-compress said elastic connecting members previously bonded by vulcanization at opposite ends thereof to the support frame portion and the mass member.