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:
Oct. 19, 1993
Filed:
Nov. 12, 1991
Roger C Anderson, Franklin, PA (US);
Joy Technologies Inc., Pittsburgh, PA (US);
Abstract
An apparatus for adjusting the operable position of a roller means adapted to engage endless driven elements such as chains, belts, and the like. The apparatus includes a sprocket carrying assembly that is operably connected to the chain engaging sprocket. A hollow piston, having one end thereof rigidly attached to the chain driven piece of equipment, is slidably and non-rotatably received within the sprocket carrying assembly. The sprocket carrying assembly has a pressure receiving port and cavity therein that is adapted to receive pressurized grease. Seals are provided between the sprocket carrying assembly and piston to achieve a fluid-tight seal therebetween. The hollow piston has a screw member threadedly received therein that is adapted to be axially advanced into and out of the piston by rotating a shaft that extends through the fixed end of the piston. A locking mechanism is removably fastened to the machinery for selectively restricting the rotation of the shaft member.