The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1997
Filed:
Mar. 19, 1996
James T Gwinn, Erie, PA (US);
Lord Corporation, , US;
Abstract
A hybrid elastomer-and-metal spring isolator with a low natural frequency. A fully bonded sandwich mount has cored pockets that receive metal coil springs. Extruded cavities on the lower and upper plates of the sandwich mount extend into the pockets within the interior of the coiled springs and receive a tension bolt and double lock-nut assembly to secure the separate lower cavities to the isolator. A preload retention nut engages a protruding portion of the tension bolt and preloads the coil springs to an amount equal to their static load. This hybrid isolator has particular application in mounting large (30 ton) diesel engines; the isolator assembly provides a natural frequency that is between 3 and 5 Hz, outside the normal idling frequencies of the engine so as to avoid resonance.