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AssigneeChiyoda Chemical Engineering & Construction Co., Ltd.
InventorsShizuo Yamamoto, Yuichi Nagai, Nobuyuki Shimizu, Hiroshi Tajimi
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An earthquake isolating and vibration absorbing equipment for structures is provided with a hanger secured to one of a floor including a ground and a supported member of a structure installed on the floor, a lever, one end of which is swingably mounted on the hanger, a weight member mounted on the other end of the lever, a holder secured to the other one of the floor and supported member, and arms for connecting one end of the lever to the free end portion of the holder. The structure provided with the equipment is less influenced by an earthquake or vibrations under the action of the lever on which there is mounted the weight member having a weight far lighter than that of the structure.
An earthquake isolating and vibration absorbing equipment for structures which each is provided with a floor member and a supported member carried by the floor member, said equipment including a hanger connected to one of the members, a lever normally positioned vertically and pivoted to the hanger at a pivotal point in one end portion of the lever, a weight member mounted on the other end portion of the lever, a holder secured to the other of said members, an arm member having one end pivoted to a free end portion of the holder and the other end pivoted to a portion of the lever other than the pivotal point, said arm member extending horizontally so as to be parallel with the supported member and the floor member, and the weight member being adapted to swing to produce an inertia which applies to, and along the arm member through the lever, a force resisting against, and reducing the horizontal movement of the supported member resulting from an earthquake and for vibration of the floor member.
Dependencies are inferred from the claim text.