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:
Jul. 22, 1997
Filed:
May. 05, 1995
Franklin H King, Coburg, OR (US);
Other;
Abstract
A crossbow for shooting projectiles includes a frame with flexible bow arms and a bowstring connecting the arms, a trigger assembly for retaining the bowstring in a cocked position and releasing to propel the projectile, and a hollow barrel with interior rifling into which projectiles are loaded and through which they are expelled. A firing bolt is connected to the bowstring and located in the barrel to transfer force from the bowstring to the projectile. In the prior art, such firing bolts contact the barrel interior, resulting in friction and wear of the rifling. In this invention, the barrel includes an elongated slot (317) therealong. The firing bolt (324) is slidably supported on rails (329) on the exterior of the barrel. The firing bolt includes a driving member (338, 327) which extends through the slot to contact the projectile, but does not contact the barrel interior walls, thus propelling the projectile without causing friction and wear within the barrel.