The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 1991
Filed:
Oct. 25, 1989
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
A delivery sheet brake for sheet-fed printing presses having a sucker formed with a suction opening movable on a closed loop path at varying speed corresponding in a sheet-transfer position to travel speed of a sheet and then being deceleratable until a sheet-release position is reached above a pile of sheets at a delivery, elements of a drive connected to the sucker for imparting a horizontal motion component to the sucker which is simultaneously movable vertically, and control valves for controlling vacuum in a suction line connected to the sucker, the sucker including a piston disposed in a cylinder of a housing so as to be movable in direction of a longitudinal axis of the piston, the housing being connected to the drive and being disposed swivelingly on a shaft having an axis extending transversely to a direction of travel of the sheet and parallel to the sheet, the piston being reciprocatingly movable in the cylinder of the housing by the vacuum in the suction line to the sucker and being controllable by contact of the sheet with the suction opening.