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:
Mar. 23, 1976
Filed:
Feb. 14, 1975
Applicant:
Inventor:
Harold W Johnson, Oxnard, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
5311 / ;
Abstract
A product is vacuum sealed between bottom and top sheets of plastic film by pre-forming the bottom sheet with a series of transverse, parallel channels and then heating and lowering the top sheet over the bottom sheet to sandwich the product therebetween. The bottom sheet has a width less than the top sheet so that a communication means to the exterior is provided with the respective channels. With this arrangement, a vacuum can be drawn from the channels and thus evacuate the air between the plastic sheets to effect the desired vacuum sealing.