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:
Apr. 30, 2002
Filed:
Jun. 12, 2000
3L Filters Ltd., North Cambridge, CA;
Abstract
A lid lifting mechanism for heavy vessel lids provides for optimum mechanical advantage in counterbalancing the weight of the lid when pivoting the lid to an open position. The mechanism has a pivot arm secured to the lid and a pivot mount intermediate the length of the pivot arm where the pivot mount is secured to the vessel container. The pivot arm extends beyond the pivot mount to provide a distal end. A pretensioned retracting device is connected to the distal end by a connector which can be selectively moved along the arm to increase or decrease the moment arm length. Such movement of the connector or the pretensioned device adjusts the extent of retracting device assist in pivoting the lid to a lid open position. This system provides for maximum mechanical advantage while adjusting for build up of material on the inside of the lid.