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:
Sep. 25, 1979
Filed:
Feb. 28, 1978
George Yatcilla, Newton, KS (US);
Garold L Fleming, Hesston, KS (US);
Kurt Graber, Moundridge, KS (US);
Loren L Alderson, Nickerson, KS (US);
Hesston Corporation, Hesston, KS (US);
Abstract
Hydraulic 'squeeze cylinders' control the size of the discharge orifice on an extrusion baler and are operated by a control circuit that relieves pressure in the cylinders in response to the buildup of a certain predetermined pressure level in the circuit. Pressurized fluid for the squeeze cylinders is supplied by a single-acting pump cylinder that is connected between the reciprocal plunger head and its push rod in such a way as to deliver a slug of pressurized fluid into the circuit on each compression stroke of the plunger, the pump drawing in a fresh slug from a reservoir during each retraction stroke of the plunger. A pilot-operated relief valve is operated by circuit fluid when the latter reaches the predetermined pressure level to open a relief path for fluid in the squeeze cylinders, and specially calibrated ports in the circuit between the pump and the cylinders cause the relief valve-operating portion of the circuit on the pump side of the calibrated ports to exist at a higher pressure level than the remaining portion on the squeeze cylinder side.