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:
Aug. 11, 1998
Filed:
Dec. 27, 1995
Applicant:
Inventor:
Jeffrey Karsdon, New York, NY (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62M / ;
U.S. Cl.
CPC ...
745941 ; D121 / ;
Abstract
A curved, tetrahelix bicycle crank arm composed of a helical array of tetrahedra. This design will transmit the propelling force away from the top dead center point providing more efficient use of the propelling energy. With this Tetrahelical design a hollow core is possible that will reduce weight and permit lubrication if needed without reducing strength. This design is also applicable to the connecting rod of internal or external combustion engine.