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:
Jan. 09, 2001
Filed:
Jul. 21, 1999
Tom Lawson, Channahon, IL (US);
L&M Manufacturing, Inc., Monmouth, IL (US);
Abstract
A tailgate operating assembly for a dump truck or dump trailer comprises a pair of hydraulic cylinders, one mounted horizontally on each opposite side wall of the cargo box adjacent the upper edge of the pivotally mounted tailgate, connected thereto by pivotal links for pivoting the tailgate toward its open position when the plungers of the hydraulic cylinders are extended and for pivoting the tailgate toward its closed position when the plungers are retracted. Each cylinder includes a pressure release mechanism to release internal pressure of each cylinder during retraction of the plungers and closure of the tailgate which enables the gravity weight of the tailgate to urge the plungers toward their retracted positions for more even and rapid movement of the tailgate to its fully closed position.