Spring devices – Resilient shock or vibration absorber
Patent
1996-03-08
1998-08-11
Le, Mark T.
Spring devices
Resilient shock or vibration absorber
267148, F16F 300
Patent
active
057916365
ABSTRACT:
A compact profile, nested wire cable isolator includes first and second wire cable spirals, each spiral defining an internal or central region. Each of the spirals has a pair of entrapment members associated therewith. One of each of the first and second pairs of entrapment members is an internal entrapment member, disposed within the internal region of the other spiral. The internal entrapment members are connected one to the other. The other of the first and second pairs of entrapment members are external entrapment members. An energy absorbing restraint includes a first and second anchoring members adapted to connect the restraint to a device, such as a piping system subject to dynamic loads, to a structure. The first anchoring member has the internal entrapment members operably connected thereto. The second anchoring member has the external entrapment members operably connected thereto to isolate the device from the supporting structure.
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Drawing from U.S. Patent Application Serial No. 07/068,580 or 088,580 (Photocopy not legible) entitled Seismic Stop Pipe Support by Robert L. Cloud & Associates, Inc.
Article "Reducing the Structural Response of a Floor Slab Subject to Flow Induced Pipe Vibration Using Wire Rope Isolators" by L. A. Loziuk, W.C. Maki, and H. LeKuch, presented at the 63rd Shock and Vibration Symposium, 10/26-30/92.
Article Reducing Pipe Vibration Using Wire Energy Absorbing Rope (Wear.sup.198 ) restraints, by L. A. Loziuk and Rob Zandbergen, presented at the 1992 ASME Pressure Vessel and Pipe Conference, Jun. 21-25, 1992.
Article Controlling Pipe Vibration Using Wire Energy Absorbing Rope Pipe Restraints:, by L. A. Loziuk, E. G. Berak and L. H. Ma, presented at the 1991 ASME Pressure Vessel and Pipe Conference, 6/23-27/91.
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American Steel and Wire New Product Development Report A204-X Cable Shock and Vibration Isolations, 3 pp., dated Mar. 10, 1964.
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