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:
May. 02, 2006
Filed:
Nov. 24, 2003
Jason P. Janavicius, San Diego, CA (US);
Jason P. Janavicius, San Diego, CA (US);
JT USA, LLC, Chula Vista, CA (US);
Abstract
A mechanism for preventing the chopping by the firing bolt of a paintball stuck or only partially inserted into the gun barrel. The bolt comprises an axial channel admitting compressed gas through a radial intake port in the proximal section of the bolt and leading the gas through a elbow-zone and an axial portion to a discharge port at the leading edge of the bolt. A sleeve slidingly engaged over the bolt as a radial aperture which is maintained in line with the intake port by a compressible coil spring, and has a leading portion extending ahead of the bolt. When the firing mechanism translates the bolt and sleeve to place the intake port and aperture in line with a gas-supplying outlet, any obstruction in the gun barrel upon being contacted by the leading edge of the sleeve, causes the sleeve to resiliently slide backward. The misalignment of the aperture and intake port prevents gas from expanding through the bolt channel and into the gun barrel. In the absence of any obstruction in the gun barrel, the expansion of the gas against the elbow-zone of the bolt channel exerts backward pressure on the bolts facilitating its recoiling toward the next firing position.