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:
Nov. 12, 2013
Filed:
Mar. 01, 2013
Applicant:
John J. Islas, Baldwinsville, NY (US);
Inventor:
John J. Islas, Baldwinsville, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41B 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A crossbow employs bowstring redirecting wheels, over which the bowstring travels, to keep the bowstring aligned with the main force vectors where the bowstring meets the tips of the crossbow power limbs or spring limbs. The bowstring is anchored to a fixed anchor points, which can be on the pylons on which the redirecting wheels are mounted, or may be at the tips of the spring limbs. In one embodiment the bowstring passes over a pulley wheel at the tip of the spring limb. This crossbow arrangement achieves superior acceleration, and can be constructed of smaller transverse dimension than conventional or compound crossbows.