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. 25, 1989
Filed:
Jan. 19, 1988
Applicant:
Inventor:
Elio Cavagna, Melegnano, IT;
Assignee:
Elio Cavagna S.R.L., Melegnano, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D / ;
U.S. Cl.
CPC ...
83529 ; 83563 ; 83639 ; 83856 ;
Abstract
The device for positioning the blade cutting edge and intermittently lowering the blade cutting edge includes: a fixed structure comprising two chambers and a central moving rod; two pistons with stems, the pistons moving within the chambers. One of the pistons is opposed by a spring. The blade carrier is hinged at the end of the moving rod and is fixed to the piston stem opposed by the spring and slides along the stem of the other piston. Pressurized fluid is introduced into the chambers by a line provided with a first valve. A second valve intermittently varies the pressure applied to the piston opposed by the spring.