Retractile finger for fitting to grain harvester auger main shaft

• US 8,091,327 B2
• Filed: 09/16/2010
• Issued: 01/10/2012
• Est. Priority Date: 09/17/2009
• Status: Active Grant

• Current Assignee: AGCO do Brasil Comércio e Indústria Ltda.
• Original Assignee: AGCO do Brasil Comércio e Indústria Ltda.
• Inventors: Batu, Neri Prestes
• Primary Examiner(s): Fabian-Kovacs, Arpad
• Application Number:
  US12/884,155
• Publication Number:
  US 20110061354A1
• Time in Patent Office: 481 Days
• Field of Search: 56/125, 56/124, 563/64, 562/94, 56/145, 198/722, 198/613, 198/693, 198/518
• US Class Current: 56/12.5
• CPC Class Codes: A01D 61/008 for longitudinal conveying, especially for combines
• CPC Class Codes: A01D 89/002 Rotors

Abstract

The invention relates to a retractile finger (1) for fitting to a grain harvester auger (3) main shaft (2), which retractile finger comprises an elongated portion (4) having at one of its ends a portion in the form of a guide (5) for fitting to the above-mentioned shaft (2), the elongated portion (4) and the portion in the form of a guide (5) being formed in one piece made of polyethylene with a molar mass of between 3.9 and 10.5 million g/mol.

Claims

1. A retractile finger (1) fitted to a grain harvester auger (3) main shaft (2), the finger having an elongated portion (4) having at one of its ends a portion in the form of a guide (5) for fitting to the shaft (2), the elongated portion (4) and the portion in the form of the guide (5) being formed in one piece made of polyethylene or other plastics material, and a closing part (6) which is fitted next to the portion in the form of a guide, the closing part and the portion in the form of a guide defining, when fitted, an internal cast region (7) which runs transverse to the elongated portion and clasps the auger main shaft, the finger having a cast hole (9) which runs longitudinally in the elongated portion and in the portion in the form of the guide.

2. The retractile finger according to claim 1, in which the elongated portion and the portion in the form of a guide being formed in one piece made of ultra-high molecular weight polyethylene having a molar mass of between 3.9 and 10.5 million g/mol, and in the molten state, a melt flow index of 7.0 to 9.0 g/min at 190°

C. and pressure of 21.6 kgf/cm².