Package making – Methods – Opening only
Patent
1991-05-29
1992-06-30
Coan, James F.
Package making
Methods
Opening only
533816, 53506, B65B 4330, B65B 5702
Patent
active
051252155
ABSTRACT:
An envelope flap opener comprises a revolving gripper drum for conveying envelopes thereupon in flap-up orientation with flap edge trailing and a revolving rotor disposed vicinally to the gripper drum, the rotor having at least one sucker cup extending from its periphery. Vacuum is valved to the sucker cup at a time when an envelope is conveyed upon the gripper drum past the rotor, the sucker cup grabs and opens the envelope flap, and subsequently the flap is released. Prior to release of the flap, a plow device intercepts the flap and further unfolds it. The plow device includes a photo-sensor for checking of proper flap opening and for detecting missing envelopes.
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Belec Eric A.
Fallos George
Hawkes Richard B.
Lee, Jr. James S.
Noll, Jr. Harry C.
Bell & Howell Phillipsburg Co.
Coan James F.
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