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:
Apr. 04, 1989
Filed:
Apr. 20, 1987
Applicant:
Inventor:
Donald G Corniea, Inver Grove, MN (US);
Assignee:
Liquipak International, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
141140 ; 222381 ; 417214 ;
Abstract
A driving device for a double bellows dispensing unit is disclosed. The device includes a cylinder slidably mounted on a fixed vertical shaft and a plate mounted on the cylinder. The plate is connected with the dispensing unit. A rotary cam and cam follower cooperate to impart oscillating motion to the plate upon upward movement of the cylinder along the shaft. A control valve controls the flow of fluid under pressure to the cylinder for selectively displacing the cylinder in opposite directions. When the cylinder is displaced downwardly by the control valve, the cam and cam follower are disengaged, so that the oscillating motion stops.