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. 28, 1990
Filed:
Oct. 16, 1989
Stephen A Burgis, Birmingham, MI (US);
Design-Rite, Inc., Sterling Heights, MI (US);
Abstract
An automated trash compaction system having an hydraulic cylinder displacing a ram to compact trash in a mobile trash container and having an electronic control unit controlling the displacement of the ram. The electronic control unit generates a ram forward signal in response to a start signal, generates a part-full signal in response to electrical current being supplied to an electric motor driving a fluid pump exceeding a part-full value, and generates a full signal in response to the current being supplied to the electric motor exceeding a full value. After a predetermined full stroke time or upon the generation of the full signal, the electronic control unit terminates the ram forward signal and generates a ram return signal returning the ram to a retracted position. The ram return signal is terminated when the current to the electric motor exceeds a predetermined value. The electronic control also has calibration subroutines for automatically generating the predetermined full stoke time, the part-full value and the full value.