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:
Sep. 20, 1977
Filed:
Mar. 04, 1976
James H Casey, Roseville, MN (US);
Curtis Lee Larson, St. Paul, MN (US);
Robert Campbell Brown, Falcon Heights, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
A system of providing convenient filling and sealing of air cushions at the site of their intended use, such as at a packaging line. A concatenation of inflatable cushions is prepared with each cushion comprising two thin films of a thermoplastic, at least one of which films has a generally central opening. The films are fused together in discrete areas to define a plurality of inflatable chambers between the films disposed around the opening, with each of the chambers having an inlet passageway communicating with the opening. The cushions are shipped uninflated to the site where they are to be used, and are then inflated and sealed on a device which includes a nozzle for simultaneously directing air through the opening of the cushion and the inlet passageways to inflate the chambers, and a means for sealing together the films in a small area around the opening to close the inlet passageways to the chambers.