National Machinery LLC

United States of America

Back to Profile
1-3 of 3 for National Machinery LLC Sort by
Query
Patent
Canada - CIPO
Aggregations Reset Report
IPC Class
F42B 5/28 - Cartridge cases of metal 2
B21D 22/02 - Stamping using rigid devices or tools 1
B21D 41/04 - ReducingClosing 1
B21D 51/54 - Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants 1
B21J 1/00 - Preparing metal stock 1
See more
Status
Pending 1
Registered / In Force 2
Found results for  patents

1.

LONG CARTRIDGE CASE

      
Document Number 02992123
Status Pending
Filing Date 2018-01-16
Open to Public Date 2018-09-07
Owner NATIONAL MACHINERY LLC (USA)
Inventor
  • Carper, Jeffrey W.
  • Snavely, Christopher W.

Abstract

A method and tooling for forming a cartridge case blank comprising backward extruding a tube from a length of wire stock in multiple backward extrusion steps with progressive tooling to obtain an intermediate blank that can be finish drawn without a preceding annealing step and which if otherwise not subjected to multiple backward extrusion steps, would require annealing prior to finish drawing to avoid tearing.

IPC Classes  ?

  • B21K 21/04 - Shaping thin-walled hollow articles, e.g. cartridges
  • F42B 5/28 - Cartridge cases of metal
  • F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor

2.

PRECISION FORGED CARTRIDGE CASE

      
Document Number 02886519
Status In Force
Filing Date 2013-09-04
Open to Public Date 2014-04-03
Grant Date 2021-05-04
Owner NATIONAL MACHINERY LLC (USA)
Inventor
  • Hay, Thomas E.
  • Carper, Jeffrey W.
  • Wasserman, Stanley J.

Abstract

An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.

IPC Classes  ?

  • B21D 22/02 - Stamping using rigid devices or tools
  • B21D 41/04 - ReducingClosing
  • B21D 51/54 - Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
  • B23D 21/14 - Machines or devices for shearing or cutting tubes cutting inside the tube
  • B26D 3/16 - Cutting rods or tubes transversely
  • F42B 5/28 - Cartridge cases of metal

3.

POINT FORMING PROCESSES

      
Document Number 02714856
Status In Force
Filing Date 2010-09-16
Open to Public Date 2011-03-17
Grant Date 2018-05-29
Owner NATIONAL MACHINERY LLC (USA)
Inventor
  • Krintzline, Donald E.
  • Hay, Thomas E.

Abstract

Tooling for a progressive forming machine comprising die and tool units having internal complementary cavity portions for receiving a workpiece, one of said units being arranged to slide a limited distance along its axis and to be biased by a spring force towards the other unit, the units each having a smooth surface end face, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in the cavity portions is restrained from leakage across said end faces during a hydrostatic trapped extrusion of the workpiece whereby the die and tool units are capable of shaping the workpiece to a degree beyond limits of conventional cold-forming processes.

IPC Classes  ?

  • B21J 1/00 - Preparing metal stock
  • B21J 13/00 - Details of machines for forging, pressing, or hammering