Contact type paper counter
AssigneeHall Processing Systems
InventorRichard Grabowski
Life of this patent
Estimating the term…
Abstract
A contact sensor apparatus counts associated sheet products as they pass over a generally planar surface. a vacuum source draws a bottom surface of a sheet product onto the planar surface. A contact member is selectively deflected through engagement with the sheet product and deflects upwardly at the passage of the trailing edge of the sheet product. The contact member is connected to a sheet of piezoelectric material that is distorted upon deflection of the contact member. This produces an electrical charge representative of passage of paper over the sensor apparatus.
Claims19
A sensor apparatus adapted to count associated sheet products, said apparatus comprising:
- a first surface adapted to receive sheet products thereon;
- a vacuum source;
- a predetermined region of said first surface adapted for connection with the vacuum source to draw associated sheet products toward the first surface;
- a contact member extending outwardly from said first surface and adapted for selective movement relative thereto as an associated sheet product slides over said contact member;
- and,
- means for detecting movement of said contact member.
A sensor apparatus adapted to count associated sheet products comprising:
- a generally planar surface adapted to receive associated sheet products thereon;
- a contact member extending outwardly from said generally planar surface and adapted to engage associated sheet products, said contact member selectively moving in response to engagement with associated sheet products;
- and,
- means adapted for drawing an associated sheet product toward said generally planar surface, said drawing means being disposed on the same side of the associated sheet product as the contact member. PG,16
A contact sensor apparatus adapted to count associated sheet products comprising:
- a generally planar surface adapted to receive associated sheet products;
- means for supplying a vacuum to a preselected region of said generally planar surface, said vacuum supplying means adapted to draw an associated sheet product toward said generally planar surface;
- a contact member extending outwardly from said generally planar surface and adapted for selective movement relative thereto as an associated sheet product slides over said contact member;
- and,
- a transducer operatively associated with said contact member selectively providing an electrical signal representative of movement of said contact member.
Dependencies are inferred from the claim text.