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.

Date of Patent:
Oct. 17, 1989

Filed:

Oct. 11, 1988
Applicant:
Inventors:

Robert B Johnson, Santa Clara, CA (US);

Robert P Smith, Santa Cruz, CA (US);

Assignee:

K & R Equipment, Incorporated, San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31B / ; B31B / ;
U.S. Cl.
CPC ...
493101 ; 493256 ; 493309 ; 493314 ; 53385 ;
Abstract

The invention provides an apparatus and method for automatically opening a plastic bag-type liner as part of a container lining process. The apparatus comprises at least one movable jaw assembly disposed on each side of the liner to be opened and a tongue on the other side of the liner opposing each jaw assembly. To open the bag, the jaws are opened and the jaw assemblies are moved toward and contact the liner and the opposing tongue pushes the liner between the gripping surfaces of the jaws of the opposing jaw assembly as the jaw assemblies begin to move apart, the jaws close, gripping and retaining the layer of liner in direct contact with the gripping surfaces of each jaw, the tongues slide out from between the layers of the liner, separating the sides of the unsealed end of the liner. A stream of air may then be directed into the open end of the bag for completely blowing the bag open prior to placing the bag over the open end of the container to be lined and forcing the liner into the container.


Find Patent Forward Citations

Johnson, Robert. (1989). Method and apparatus for automatically opening bags (U.S. Patent No. 4874354). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4874354

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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