Sheet-material associating – Associating or disassociating – Signature associating
Patent
1995-10-27
1998-07-21
Nguyen, Hoang
Sheet-material associating
Associating or disassociating
Signature associating
B65H 3900
Patent
active
057824657
ABSTRACT:
A mechanism for opening a publication and for sensing the open or closed condition of the publication includes an opening mechanism for opening the publication into two sections, a first detector assembly for sensing the presence of one of the sections at a first location, and a second detector assembly for sensing the presence of the remaining section at a second location spaced from the first. An indicator responds to the first and second detector assemblies for indicating that the opening mechanism properly opened the publication when the sections are sensed at both the first and second locations, and for indicating that the opening mechanism missed opening the publication when the sections are sensed at only one of the first and second predetermined locations. Preferably, a piece of reflective tape is positioned at the first and second locations, and each detector assembly emits light that is directed onto the corresponding tape along a predetermined line that is angled 15.degree.-45.degree. relative to the tape. The light reflected back along the predetermined lines by the tape is directed back to the detector assemblies. The opening mechanism preferably includes a spear for piercing the publication, and an air outlet orifice for directing air under pressure across the spear toward the publication in a direction angled relative to the travel path of the publication to separate the sheets from one another immediately upstream of the spear, facilitating opening of the publication by the spear.
REFERENCES:
patent: 3561751 (1971-02-01), Dutro
patent: 3656738 (1972-04-01), Glaser et al.
patent: 4526356 (1985-07-01), Swint
patent: 4754959 (1988-07-01), Kobler et al.
patent: 5279495 (1994-01-01), Rello
patent: 5441245 (1995-08-01), Fluckiger
patent: 5443250 (1995-08-01), Gosslinghoff
Rawlings Greg
Worthington Lonnie
Kansa Corporation
Nguyen Hoang
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