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. 15, 1976
Filed:
Sep. 17, 1974
Einar O Engebretsen, Troy, OH (US);
Hobart Corporation, Troy, OH (US);
Abstract
A compacting machine has a reversible induction motor drive for a ram movable in a cycle consisting of a compacting stroke, followed by a sustained dwell period, and a retracting stroke. Directional controls prepare the drive for a compacting stroke when the ram is at its fully retracted starting position and prepare the drive for a retracting stroke as soon as the ram leaves the starting position. When the ram encounters a predetermined resistance the drive automatically reverses. The ram is stopped at this time, and later is moved through its retracting stroke to complete a full cycle. Circuits are disclosed to retract the ram automatically after a lapse of time, or under manual control. A selector is also provided to make this feature optional by choice of the operator.