Patent · US Expired

Spiral drum magazine with elongated magazine clip and single piece last round follower

US4926742A · kind A · utility

66Cited by
10References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 24, 1988
Grant dateMay 22, 1990
Priority date
Expiry dateMay 24, 2008

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF41A9/75
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

The magazine includes a clip magazine (22) above a drum magazine (11) and connectable to an automatic weapon. Door (15) is hinged at its lower edge to open downwardly from clip magazine (22). The torsion spring (21) can be wound by external crank (20), and the spring bias can be relieved by pushing latch plunger (60). The protrusion (102, 103) of the last round follower (85) moves progressively along the spiral path (81) of the drum magazine (11) and the last round follower (85) moves through the turn and into the clip magazine (22) to push the last round of ammunition to the weapon.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.