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:
Nov. 03, 1987
Filed:
Jul. 14, 1986
Kjell Andersson, Loddekopinge, SE;
Tetra Pak International Aktiebolag, Lund, SE;
Abstract
A conveyor moves empty containers for single-piece goods one-by-one below an openable bottom on which successive accumulations of the goods are supported. A device for holding an empty container is raised by a control system from a lower position adjacent the conveyor to an upper position below said bottom, the control system being operable to impart to said device with a container thereon a dampened and continuous downward movement from its upper to its lower position in response to falling of a said accumulation against the container when said bottom is opened. The control system includes a valve having a first position for supplying compressed air to one side of a plunger-cylinder assembly to raise said device, a second position for supplying compressed air to the other side of said assembly to hold said device in its upper position, and a third position for venting said one side of said assembly to effect said continuous downward movement.