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:
Jun. 29, 1976
Filed:
Aug. 22, 1974
William H Hills, Melbourne Village, FL (US);
Shirley M Hills, Melbourne Village, FL (US);
Hills Research & Development, Inc., Melbourne, FL (US);
Abstract
Formation and liquid-filling of plastic bags is performed in a continuous high speed and low cost process. Plastic film is extruded in tubular form and inflated with air or another gas. The tube is transported along a path of work stations at which the tube is successively: sealed to define a series of inflated sections; filled with liquid, while inflated, by a large size hypodermic-type needle configured to puncture and displace entrapped gas with fill liquid, the displaced gas escaping around the needle; seamed to seal off the needle-hole from the liquid-filled portion of the bag; and cut to separate the individual bags, if desired.