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. 23, 1977
Filed:
Jul. 15, 1974
Hisao Hayashi, Tokyo, JA;
Abstract
A firearm cartridge assembly consists of a casing having a bullet mounted in one end and an explosive charge in the opposite end with a wad extending between the two end elements. The wad has a generally cylindrical configuration and includes a first end and a second end each containing a similarly shaped recess. The first end in the assembled position contacts the explosive charge and the second end contacts the trailing end surface of the bullet. Located between and spaced axially from the ends of the wad is a centrally located disc-shaped section extending transversely of the axis extending between the ends and having an outer periphery generally conforming to and in surface contact with the inner surface of the casing so that the disc-shaped section forms a seal with the casing against gas leakage when the charge is exploded. In addition, spring sections, compressible in the axial direction of the casing, are located one between the first end and the disc-shaped section and the other between the opposite side of the disc-shaped section and the second end. Preferably the wad is integrally formed from a plastic material and it is symmetrical on the opposite sides of the disc-shaped section.