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US3559446A Expired / Lapsed US ⏱️ 0.0 years remaining

Forging machine

Assignee: National Machinery Co
•
Filing: 1968-03-29
•
Granted: 1971-02-02
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Expires: 1988-03-29
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Abstract

Abstract A FIVE STATION PROGRESSIVE COLD FORMER IS DISCLOSED WHICH IS ARRANGED TO PERMIT RELATIVELY QUICK TOOL CHANGEOVER. THE DIE BREAST, THE BOLSTER PLATE AND THE SHEAR ELEMENTS ARE REMOVABLY CLAMPED IN THE MACHINE BY HYDRAULICALLY-OPERATED CLAMP ACTUATORS. A KNOCKOUT MECHANISM IS PROVIDED WITH A CAM DRIVE WHICH INCLUDES CAM SECTORS THAT CAN BE REMOVED AND REPLACED WITHOUT MATERIAL DISASSEMBLY OF THE CAM DRIVE. AN ADJUSTABLE TUBE NUT IS THREADED INTO THE MACHINE TO ADJUSTABLY DETERMINE THE REARWARD POSITION OF THE KNOCKOUT MECHANISM. POWER MEANS ARE PROVIDED FOR THE ADJUSTMENT OF THE TUBE NUTS. THE SEPARATE FIXTURES ARE PROVIDED TO PERMIT INSTALLATION OF TOOLING AND ROUGH ADJUSTMENT THEREOF ON A DIE BREAST AND BOLSTER ASSEMBLY SEPARATE FROM THE MACHINE. THE MACHINE IS ARRANGED SO THAT A TOOLING CHANGE CAN BE ACCOMPLISHED BEFORE THE MACHINE COOLS TO ENVIRONMENTAL TEMPERATURE SO THAT WARM-UP ADJUSTMENT REQUIREMENTS ARE MINIMIZED.

Inventors

  • 👤 Harry A Dom
  • 👤 Gene E Allebach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 01:08
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/06; B21J; B21J13/00; B21J13/08; B21J13/085; B21J13/14; B21J9/00; B21J9/02; B21J9/022

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-02-01 1974-08-03 1975-02-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-01 1978-08-03 1979-02-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-01 1982-08-03 1983-02-02 $7700.00 Window Closed / Lapsed

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