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:
Sep. 20, 1988
Filed:
Apr. 01, 1986
Applicant:
Inventors:
Hugh F Taylor, Sawston, GB;
David R Theobald, St. Ives, GB;
Assignee:
Utec B.V., Leersum, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41B / ;
U.S. Cl.
CPC ...
124 68 ; 9218 / ; 92182 ;
Abstract
An air weapon air compression system of the type in which air is compressed in a cylinder and expelled through a discharge port, to propel a projectile along the barrel and fire it out of the weapon, by the rapid movement of a piston within the cylinder. Such a system incorporating grooves in one or both of opposed portions of the cylinder and piston, for the transfer of air towards the discharge port during the final compression stage, to enhance the performance of the weapon.