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:
Feb. 08, 1983
Filed:
Dec. 11, 1980
Toivo Marttinen, Puntala, FI;
Enso-Gutzeit Osakeyhtio, Helsinki, FI;
Abstract
In connection with a land clearing saw, a sapling control substance dispensing device comprising a container for the sapling control substance, a control substance nozzle and a control substance duct leading from the container to the nozzle, this duct incorporating a manually operable valve (1) comprising a piston (4) provided with return spring (11) and a cylinder (5), with ports for the control substance entry duct (6) and exit duct (7), these ducts being provided with check valves (8,18). Within the piston has been installed an auxiliary piston (14) loaded with a spring (16) and which as the piston (4) is being moved opens or closes a needle valve (9) associated with the exit duct port.