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:
Jan. 17, 1989
Filed:
Mar. 25, 1988
John W Lewis, Baton Rouge, LA (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
The invention is a machine and method for opening a filled bag and emptying the contents of the bag. A bag filled with a solid material is guided into a space between a pair of rotating drums, in which there are several rows of rigid spikes fastened to each drum. The spikes extend through the drum walls and through openings in a belt that connects each drum to an idler roller. When the filled bag enters the space between the drums, it becomes impaled on the spikes, and is drawn into a cutter means. The cutter means slits the bag in half to empty the contents, and each empty bag half is carried on one of the rotating drums to a point where the spikes move away from the belt to release the empty bag half.