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:
Aug. 12, 1997
Filed:
May. 02, 1995
Applicant:
Inventor:
Hanns J Kristen, San Anselmo, CA (US);
Assignee:
Tilia International, Inc., Kowloon, HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
53512 ; 53 52 ; 53 75 ;
Abstract
A vacuum sensor for use in devices for the vacuum packaging of perishable items. The vacuum sensor senses fluid pulses or flow expelled from an exhaust port of a pump of the vacuum packaging device. The sensor converts a force of the fluid pulses or flow into a signal that changes with a change in the force of the fluid pulses or flow. The signal is then communicated to a control circuit which uses the signal to display the progress of the vacuum process and/or shut down the pump upon establishing a substantial vacuum within the package.