B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 27/00 (2006.01) B65H 5/06 (2006.01)
Patent
CA 2301786
An apparatus (10) for performing a work operation on sheet material (12) includes a plurality of drive wheels (42) for driving the sheet material (12) in cooperation with a plurality of pinch rollers (36) along a feed path (30). Each of the drive wheels (42) includes a drive surface (54) having a plurality of primary teeth (60) and a plurality of secondary teeth (62). Each primary tooth (60) includes a top surface (76) and a plurality of primary contact points (78) to engage the sheet material (12). Each secondary tooth (62) includes either a secondary contact line (92) or a secondary contact point (90) that come into contact with the sheet material (12) to provide additional driving force and to prevent the sheet material from being perforated by the primary teeth (60). The primary teeth (60) and the secondary teeth (62) of the drive wheels (42) engage the sheet material (12) to advance the sheet material along the feed path (30). The drive surface (54) of the drive wheels (42) of the present invention minimizes slippage of the sheet material (12) in the drive apparatus (10) without damaging the sheet material (12).
Fisher Kenneth
Schlueter Richard
Thomas Michael
Zenczak Brian
Gerber Scientific Products Inc.
Ridout & Maybee Llp
LandOfFree
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