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:
Jul. 30, 2002
Filed:
Apr. 02, 2001
Mark S. Jeffries, Florence, SC (US);
AVM, Inc., Marion, SC (US);
Abstract
The method includes making a fluid communication channel ( ), which has a selectively variable cross-sectional area profile, in the inner face of a gas spring cylinder ( ) so as to permit fluid communication at different selective rates bypassing around or across the piston assembly ( ) of the gas spring ( )as the piston assembly ( ) moves within the cylinder ( ). Preferably the cross-sectional area profile of the fluid communication channel ( ) is initially substantially the same throughout the length of the channel( ) and is thereafter selectively changed in certain portions of the channel ( ) so as to restrict and in some instances block gas or fluid flow through the fluid communication channel ( ).