Hydraulic tensioner of the hollow piston type with a screw-type retaining device 

Patent No. 7,048,662

Issued: May 23, 2006
Filed: January 8, 2003
Priority: Mar 7, 2002 [European Patent Office]

Inventors: Maino; Bruno (Monza, IT)
Assignee: Morse TEC Europe S.r.l. (Acore, IT) 

A cartridge tensioner (10) for drive transmission belts and chains comprises a cylinder (12) with a cylinder bore, a piston (14) slidably received in the cylinder bore and provided with a piston bore (40), a vent device (16) housed in the piston bore and comprising an end part and a stem integral with each other, a pressure spring (18) acting between a shoulder of the cylinder and the vent device, and a retaining device (20), accessible from the outside of the cylinder. The retaining device, in a position engaged with the stem of the vent device, retains the vent device preventing the action of the spring on the piston, and, in a position of disengagement from the stem of the vent device, allows the spring to bias the device against the piston and to act consequently on the piston.


This application claims an invention which was disclosed in EPC application number 02425131.6, filed Mar. 7, 2002, entitled "HYDRAULIC TENSIONER OF THE HOLLOW PISTON TYPE WITH A SCREW-TYPE RETAINING DEVICE". The benefit under 35 USC.sctn.119(a) of the EPC application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.

Go Back for more representative patents.

Home || Intellectual Property || Patents || Trademarks || Copyrights

Brown & Michaels, PC
400 M & T Bank Building
118 North Tioga Street - The Commons
Ithaca, NY 14850
Phone: (607) 256-2000 Fax: (607) 256-3628

e-mail: bpm@bpmlegal.com

© 2006 Brown & Michaels PC