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. 20, 2022
Filed:
May. 08, 2020
Q.e.d. Environmental Systems, Inc., Dexter, MI (US);
Steven R. Wells, Howell, MI (US);
William C. Allen, III, Dexter, MI (US);
Matthew T. McKeown, Fowlerville, MI (US);
Mark T. Weinberger, Mounds View, MN (US);
John F. Schaupp, Sylvania, OH (US);
David A. Fischer, Ann Arbor, MI (US);
Leonard Felton Stevens-Moman, Dexter, MI (US);
Graco Minnesota Inc., Minneapolis, MN (US);
Abstract
Various embodiments concern a pneumatic landfill pump cycle counter comprising a spring located within a housing passage and a shuttle comprising a shuttle magnet, the shuttle located within the passage. The shuttle can be configured to move axially by the spring within the passage in an upstream direction to a home position, move axially by one or both of air pressure differential and airflow within the passage in a downstream direction away from the home position to a hold position. The cycle counter can further comprise a counter comprising an element responsive to a magnetic field of the shuttle magnet, the counter configured to increment a numeric count for each complete cycle of the shuttle moving from the home position to the hold position and then back to the home position.