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.:

US 7114537 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 03, 2006

Filed:

Jul. 06, 2001
Applicants:

Marko Paakkunainen, Tampere, FI;

Mauri Marttila, Valkkinen, FI;

Inventors:

Marko Paakkunainen, Tampere, FI;

Mauri Marttila, Valkkinen, FI;

Assignee:

Plustech Oy, Tampere, FI;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01G 23/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transformer unit for sawing, wherein the transformer unit comprises: a first machine element for performing a continuous rotational motion, and a second machine element for performing a limited alternating rotational motion, wherein the transformer unit can be coupled to an arrangement supplying driving energy for the transformer unit, wherein the first and the second machine elements are coupled to a chain saw with a guide bar, wherein the first machine element is for rotating the chain saw, wherein the second machine element is for feeding the guide bar and for returning the guide bar to the starting point of the sawing after the sawing. The second machine element is a wing torsion device operated by pressurized medium, comprising an annular space for the pressurized medium.


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