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:
Jun. 12, 1990
Filed:
Jun. 21, 1989
Applicant:
Inventor:
Gerhard Zerrer, Korb, DE;
Assignee:
Andreas Stihl, Waiblingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4158 ; 123 4159 ; 123 417 ;
Abstract
The invention is directed to handheld portable tools. An air temperature dependent cooling throttle flap controls the amount of cooling air passing over an air cooled engine. The arrangement of the throttle flap in an annular extension expels air in a manner not to annoy the operator.