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. 21, 1995
Filed:
Feb. 12, 1993
Applicant:
Inventor:
Ronald Liedtke, Fox Lake, IL (US);
Assignee:
Marchon, Inc., Vernon Hills, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03G / ; F03G / ; A63H / ;
U.S. Cl.
CPC ...
185 39 ; 185D / ; 192 / ; 446 60 ;
Abstract
A device for winding a rubber band motor has a very light weight so that it may be carried by a model airplane, almost without any weight penalty. A pulley with a recoil spring has a string wound thereon so that the release of a pulled string rewinds it onto the pulley. A clutch mechanism engages the pulley and rubber band when the string is pulled and disengages when the string rewinds. This way, the string may be pulled repeatedly in order to store more energy in the rubber band.