U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Multi-disk shell and wad

Patent 6161482 Issued on December 19, 2000. Estimated Expiration Date: Icon_subject August 18, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

341586

1244046

1872102

3053185

3191534

3285174

3402664

3626854

3662683

3721194

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Inventor

Application

No. 135697 filed on 08/18/1998

US Classes:

102/532, WADS102/449, Shot container102/451, Integral wad102/464Case

Examiners

Primary: Carone, Michael J.
Assistant: Nguyen, Son T.

Attorney, Agent or Firm

Foreign Patent References

  • 1548296 FR 12/13/1968
  • 2372411 FR 07/13/1978
  • 1172577 DE 06/13/1964
  • 645353 IT 09/13/1962
  • 683690 IT 02/13/1965

International Class

F42B 007/08

Abstract

The present invention is a multidisk shell and wad for use in a multidisk shell. The wad consists of a wad base, a cushioning section attached at a first end to a top section of the wad base, and at least three alignment arms attached to a second end of the cushioning section. The cushioning section is interposed between the projectile mass and the wad base. The preferred cushioning section comprises a hollow outer cylinder and at least one inner cylinder of polymeric plastic material. Thus, there are at least two concentric cylinders providing the cushioning between the disks and the expanding propellant charge. These at least two concentric cylinders and are attached at first ends to the top side of the wad base. The wad has at least three spatially separated alignment arms having proximal ends and distal ends for maintaining the alignment of projectiles as they travel through the gun barrel. The maintenance of projectile alignment is helpful in reducing the scatter of the projectiles after they exit the gun. The at least three alignment arms are typically attached at the proximal ends to a second end of the cushioning section. The geometry of the at least three alignment arms is useful in the maintenance of the alignment of the projectile under acceleration. A preferred embodiment is a totally symmetrical configuration. Thus when the wad contains three alignment arms the arms are spaced at regular intervals of 120 degrees; four alignment arms are separated by 90 degrees; etc.

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