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. 30, 1979
Filed:
Sep. 07, 1976
Applicant:
Inventor:
Mats Lindgren, Stockholm, SE;
Assignee:
Nordfor AB, Sater, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01G / ; F02G / ;
U.S. Cl.
CPC ...
144 / ; 60597 ; 1443 / ; 254 / ;
Abstract
A method and apparatus for use in tree felling for causing a tree to tip under the influence of a force acting on the cutting surfaces of a saw notch in the tree trunk. The tipping force is produced by means of an inflatable cushion which is inserted in a flattened state into the saw notch and connected to the combustion chamber of the cylinder of the power saw motor to be inflated with compressed gas from said combustion chamber.
Lindgren, Mats. (1979). Method and apparatus for use in connection with felling of trees (U.S. Patent No. 4172479). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4172479
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile