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. 25, 2001
Filed:
Aug. 04, 1997
Dennis P. McGuire, Erie, PA (US);
Lord Corporation, Cary, NC (US);
Abstract
A fluid isolator apparatus (,) for isolating vibration between a vibrating member, such as a helicopter transmission or pylon and another structure, such as a helicopter fuselage. In one aspect, the fluid and elastomer apparatus (,) includes an inner member (,), an outer member (,), and an elastomer element (,) flexibly interconnecting them. First (,) and second (,) operating chambers are interconnected by a passageway (,). Fluid (,) oscillates between the operating chambers (,) through passageway (,). A spring (,) flexibly suspends the piston (,) such that dynamic motion between said inner and outer member (,) displaces piston (,) and spring (,). Preferably the a hollow cavity (,) houses both the piston (,) and a metal coil spring (,). The stiffness of the coil spring (,) may be interchanged to adjust a resonant parameter. Optionally, the piston mass itself or an additional tuning mass (,) mounted on the piston (,) may be used to accomplish tuning. Embodiments describing pistons (,) including rolling diaphragms, elastomer tubeforms, and metal bellows are described.