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US 12,710,090 B2Granted
Multi-chamber internally damped tuned vibration absorber
AssigneeTextron Innovations Inc.
InventorsRichard Alan Manwell, Lloyd Maurice Kronk, Anindya Ghosh
Life of this patent
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Abstract
A multi-chamber internally damped tuned vibration absorber includes a mass having internal chambers that house damping members for dissipating vibrational motion of the mass. Guide members pass through the internal chambers and guide movement of the mass. An attachment member attaches the guide members to a structure to attenuate vibrations of the structure.
Claims16
A vibration-reduction apparatus, comprising:
- a mass having a plurality of openings extending through the mass in a first direction, wherein each of the openings comprises a through hole that passes through the mass with a narrow outlet and a wide outlet opposite the narrow outlet, and the openings comprise a pair of oppositely arranged openings having the narrow outlet of a first opening of the pair on a first side of the mass and the wide outlet of a second opening of the pair also on the first side of the mass;
- a plurality of guide members each disposed within a respective one of the openings, wherein the guide members are configured to guide movement of the mass back and forth along the first direction, and each of the guide members comprises a narrow portion that protrudes through the narrow outlet of the mass and a wide portion that protrudes through the wide outlet of the mass;
- a plurality of internal chambers each formed around a portion of a respective one of the guide members within a respective one of the openings;
- a plurality of damping members each disposed in a respective one of the internal chambers, wherein the damping members are configured to dampen movement of the mass along the first direction;
- and
- an attachment member configured to mechanically couple the guide members to a structure for reducing a vibrational motion of the structure.
3 more elements
A multi-chamber internally damped tuned vibration absorber, comprising:
- a mass having a first bore extending through the mass in a longitudinal direction, and a second bore extending through the mass in the longitudinal direction, the second bore being parallel with the first bore;
- the first bore having a first opening and a second opening opposite the first opening, the first opening being narrower than the second opening;
- the second bore having a third opening and a fourth opening opposite the third opening, the fourth opening being narrower than the third opening;
- wherein the first opening and the third opening are on a first side of the mass, and the second opening and the fourth opening are on a second side of the mass, opposite the first side;
- a first guide member extending through the first bore in the longitudinal direction, the first guide member having a narrow portion that protrudes through the first opening and a wide portion that protrudes through the second opening;
- a second guide member extending through the second bore in the longitudinal direction, the second guide member having a narrow portion that protrudes through the fourth opening and a wide portion that protrudes through the third opening;
- a first internal chamber formed in the first bore of the mass between the first opening and the wide portion of the first guide member;
- a first damping member housed within the first internal chamber;
- a second internal chamber formed in the second bore of the mass between the fourth opening and the wide portion of the second guide member;
- a second damping member housed within the second internal chamber;
- wherein the first damping member and the second damping member are configured to damp vibrational motion of the mass in the longitudinal direction;
- and
- an attachment member configured for mechanically coupling the first guide member and the second guide member to a structure for reducing a vibrational motion of the structure.
10 more elements
A vibration-reduction apparatus, comprising:
- a mass having a plurality of openings extending through the mass in a first direction;
- a plurality of guide members each disposed within a respective one of the openings, wherein the guide members are configured to guide movement of the mass back and forth along the first direction;
- a plurality of internal chambers each formed around a portion of a respective one of the guide members within a respective one of the openings;
- a plurality of damping members each disposed in a respective one of the internal chambers, wherein the damping members are configured to dampen movement of the mass along the first direction;
- an attachment member configured to mechanically couple the guide members to a structure for reducing a vibrational motion of the structure;
- and
- an elastomeric bumper adhered to an outside of the mass between the mass and the attachment member in the first direction, wherein the damping members provide a primary energy absorber and the elastomeric bumper provides a secondary energy absorber for high loading situations;
- wherein the elastomeric bumper comprises:
- a pair of ringed portions each comprising a circular hole, wherein the circular hole is configured to fit loosely around an end of one guide member;
- and
- a bridge portion coupling the pair of ringed portions.
8 more elements
Dependencies are inferred from the claim text.