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| Machine tool, particularly band saw, with lightweight saw band carrier |
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| Method for restraining vibration of a building and structure therefor |
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| Thermoplastic cover for stadium seating, picnic tables, boat docks and the like |
| OF THE PREFERRED EMBODIMENT As indicated in FIG. 1, a bleacher, generally designated 10, is ... |
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| Auxiliary support mechanism for an automotive hoist |
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| Panel for constituting sound insulating wall |
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Device for absorbing mechanical shock
| Details |
Inventors: Newlon, Charles E.;
Assignee: The United States of America as represented by the United States (Washington, DC)
Primary Examiner: Halvosa; George E. A.
Assistant Examiner:
Attorney, Agent or Firm: Denny; James E., Hamel; Stephen D., Lewis; Fred O.
This invention is a comparatively inexpensive but efficient shock-absorbing device having special application to the protection of shipping and storage cylinders. In a typical application, two of the devices are strapped to a cylinder to serve as saddle-type supports for the cylinder during storage and to protect the cylinder in the event it is dropped during lifting or lowering operations. In its preferred form, the invention includes a hardwood plank whose grain runs in the longitudinal direction. The basal portion of the plank is of solid cross-section, whereas the upper face of the plank is cut away to form a concave surface fittable against the sidewall of a storage cylinder. The concave surface is divided into a series of segments by transversely extending, throughgoing relief slots. A layer of elastomeric material is positioned on the concave face, the elastomer being extrudable into slots when pressed against the segments by a preselected pressure characteristic of a high-energy impact. The compressive, tensile, and shear properties of the hardwood and the elastomer are utilized in combination to provide a surprisingly high energy-absorption capability. |
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DETAILED DESCRIPTION A shock-absorbing device designed in accordance with this invention comprises a wooden member having a base, the basal portion of the member being formed with a solid cross-section.
A top portion opposed to the base is formed of spaced-apart segments whose upper faces cooperatively define a concave surface.
An elastomeric sheet is disposed on the concave surface, the sheet being extrudable into the spaces between the segments when forced against the concave surface by a pressure exceeding a preselected value.
In one embodiment of the invention, the wooden member is of elongated configuration, and the concave surface is contoured to mate with a cylindrical surface extending transversely of the member.
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Vibration and Earthquake Isolation 
